You can read every paper on drafting aerodynamics. You can understand the physics of how a pace line works — the energy savings, the wind shadow, the precise percentage of watts you are not spending while sitting on someone's wheel. And you can still be absolutely terrible at riding in one.
The science matters. If you want that side of things, we covered it properly in the drafting, echelons, and through-and-off guide with the wind tunnel research and the numbers. This is the other half. The practical half. The part that happens when you are sitting third wheel in a chain gang at 38kph, your heart rate is climbing, the rider on the front is about to pull off, and you need to know what to do next.
Pace line riding is a skill. Not a concept. Not something you read about and then execute. It is a physical skill that lives in your hands and your peripheral vision and the tiny adjustments you make with your pedalling 200 times per minute. It takes practice. It takes awareness. And it takes understanding a few things that nobody explicitly teaches you on the Saturday club run.
The Single Pace Line
The single pace line is the foundation. One rider behind another, in a straight line, each rider sitting in the draft of the one ahead.
Formation is simple. You sit behind the wheel in front, offset very slightly to the side the wind is coming from. If the wind is from the left, you sit slightly to the right of centre behind the wheel ahead. This puts you into the most sheltered position. If there is no wind, sit directly behind.
Following distance depends on your experience and your trust in the rider ahead. For most club riders, half a wheel length to one wheel length is the working range. Closer is more efficient but requires faster reactions. Start at one wheel length. As you get comfortable with the rider ahead — their pedalling rhythm, their line, how they react to hazards — you can close the gap.
The critical rule: never overlap your front wheel with the rear wheel of the rider ahead. Not by 10cm. Not by 5cm. If they move sideways — to avoid a drain, to adjust their line, because they sneezed — your front wheel clips their rear wheel and you are on the ground before your brain registers what happened. There is no recovery from a front wheel touch at speed. None.
In a single pace line, the rider on the front is doing the work. Everyone else is recovering. When the front rider has done their pull, they signal and pull off to one side, the line moves through, and the next rider takes the front. The rider who pulled off drifts back along the line and slots in at the rear.
That is the mechanics. Now for the bits that actually matter.
Pulling Off: The Skill Nobody Explains Properly
When you are ready to pull off, you do three things in sequence. First, you stop accelerating. You maintain your current speed for a couple of pedal strokes so the rider behind knows you are about to go. Second, you flick your elbow on the side you want the next rider to come through. Right elbow flick means "come through on my right" — which means you are about to drift left. Third, you ease off the power slightly and drift to the side you indicated, letting the line come past you.
The key word is drift. Not swerve. Not brake. Not suddenly move sideways. You ease off the power by 10-20 watts and let the speed differential between you and the line do the work. The riders behind you should not need to brake. They should not need to adjust their line. Your movement off the front should be so smooth that a rider three spots back barely notices it happened.
Which side do you pull off to? Convention says you pull off into the wind. If the wind is coming from the left, you pull off left, so the advancing line is on the sheltered side. In practice, on a club run, the side often depends on the road — pull off away from traffic, pull off to the side with more room. If you are not sure, watch what the rider before you did and follow the pattern.
Once you have pulled off, you are drifting back along the outside of the line. Keep pedalling lightly. Do not coast. Coasting creates an unpredictable speed — you decelerate quickly, then the riders behind you have to adjust. Light pedalling keeps your speed smooth and predictable. As you reach the back of the line, check over your shoulder, slot in behind the last rider, and settle back into the draft.
The whole sequence should feel seamless. If it does not, something is wrong and it is almost always one of two things: you are pulling off too aggressively, or you are leaving a gap when you slot back in.
How Long to Pull
This is where ego gets in the way of good riding.
The instinct when you hit the front is to prove something. To show you can hold the pace. To take a long, heroic pull that demonstrates your fitness. Resist that instinct entirely.
Your job on the front is not to show how strong you are. Your job is to maintain the group's speed for your turn, then get out of the way so the next rider can do the same. The group's speed is set by the group. Not by you. Match the pace of the rider who just pulled off. Not the pace you think you should be riding.
How long should your pull be? That depends entirely on your fitness relative to the group. And this is the part most people get wrong.
If you are one of the stronger riders in the group, take pulls of 30-60 seconds. That is plenty. On a well-drilled chain gang doing through-and-off, 20-30 seconds on the front is standard even for the strongest riders. Nobody needs a two-minute pull. A two-minute pull just means the next rider has to deal with the pace dropping as you fade, and the rhythm of the group gets disrupted.
If you are one of the weaker riders, take shorter pulls. Fifteen seconds. Ten seconds. Even five seconds — come to the front, hold the pace for a few pedal strokes, flick your elbow, and pull off. Nobody in a well-run group will judge you for a short pull. What they will judge you for is taking a pull that is too long, blowing yourself up, and then opening a gap as you flail out the back of the line.
A short, smooth pull that maintains speed is infinitely more useful than a long pull that disrupts the rhythm. Infinitely.
The good news is that pull length is not fixed. On a three-hour ride, you might take 45-second pulls in the first hour, 30-second pulls in the second, and 15-second pulls in the third as your legs start to go. That is normal. That is smart. Adjust as you go.
The Double Pace Line: Through-and-Off
Through-and-off is the most efficient pace line formation for sharing work on flat and rolling roads. If the single pace line is taking turns, through-and-off is a conveyor belt.
Two lines of riders sit side by side. The inside line — the advancing line — moves slightly faster than the outside line — the retreating line. The speed differential is small. Half a kilometre per hour. Maybe one. Just enough that the advancing line gradually moves forward relative to the retreating line.
When you reach the front of the advancing line, you are momentarily the front rider with nobody ahead. You ease your effort very slightly — just enough to let the advancing rider behind you come through — and drift across to the top of the retreating line. You are now recovering. You sit in the retreating line as it moves backwards relative to the advancing line, and when you reach the bottom, you ease across to the bottom of the advancing line and start moving forward again.
The rotation is continuous. Nobody stops. Nobody waits. The whole thing moves like a chain on a cog — riders going up one side, across the top, down the other side, and across the bottom.
The most common mistake in through-and-off is hesitating at the front. You reach the top of the advancing line and you think, "I should take a pull." You hold your speed. The rider behind you in the advancing line has to slow down because you are blocking the rotation. The retreating line stalls because there is no gap for you to slide into. The whole system grinds.
Do not take a pull at the front of a through-and-off. Just come through and peel off. The system works because everybody spends a very short time exposed at the front. If the group wants to go faster, the speed differential between the two lines increases slightly. If the group wants to ease up, the differential shrinks. The individual rider does not decide the pace. The system does.
One practical detail that matters: which line is advancing and which is retreating depends on the wind direction. The advancing line should be on the sheltered side. If the wind is from the left, the advancing line is on the right. Riders at the front peel off to the left — into the wind — so the retreating line is on the exposed side and the advancing line stays sheltered. This way, the riders doing the work (moving forward through the advancing line) get the most draft benefit, and the riders recovering (drifting back in the retreating line) are the ones exposed to the wind, which naturally slows them without them needing to brake.
If the wind changes direction during the ride, the group needs to swap which line advances. This usually happens with a call from the front — "swap sides" — and takes a couple of rotations to settle.
When You Are Cooked
You will reach a point on some rides where you cannot take a pull. Your legs are finished. Your heart rate is maxed. You are holding the wheel in front and that is all you have left.
This is where a lot of riders make a critical error. They feel obligated to take a turn on the front, so they drag themselves up, take a pull that lasts eight seconds before they blow, and then open a gap as the line comes past them because they have nothing left to close it. The group slows. People look back. The rhythm dies.
Do not do this. Sit on.
Sitting on means you stay at the back of the line. You do not take a pull. You sit on the wheel in front of you and you contribute nothing to the pace. And that is absolutely fine.
The group would rather have you sitting on than have you disrupting the rotation. A smooth, continuous pace line with one rider sitting on at the back is still faster than a pace line that keeps having to slow down because someone up front is cracking.
When you decide to sit on, communicate it. A quick word — "I'm sitting on" or "I'll miss this turn" — is enough. In a through-and-off, you simply stay at the bottom of the retreating line and do not cross over to the advancing line. The riders around you will adjust. They have all been there.
There is no shame in sitting on. Every rider in every group has done it. The strong riders on the front would rather you sit on for twenty minutes and then come back into the rotation when your legs return than have you take a pull that breaks you completely and forces you off the back.
The one thing you must do when sitting on is hold the wheel. Stay close to the rider in front of you. Keep the gap tight. If you are sitting on with a three-bike-length gap, you are not drafting properly, the rider behind you (if there is one) is not drafting properly, and you are creating a rubber band effect that causes problems every time the pace changes.
Communication: What Actually Matters
Pace line communication gets overcomplicated. People shout instructions, bark orders, call out every detail of the road ahead. Most of it is noise.
In a pace line, the communication that matters is three things. Three. Point out hazards ahead of you. Call cars. Signal when you are pulling off. That is it.
Hazards. The rider behind you cannot see the road surface ahead of them. You are their eyes. Potholes, drains, gravel patches, glass, wet manhole covers, parked cars — point at them. Left hand down for hazards on the left. Right hand down for hazards on the right. Do it early. Signal when you are 15-20 metres from the hazard, not when you are on top of it. Late signals are worse than no signals because the rider behind you reacts suddenly, which causes the rider behind them to react suddenly, and by the fourth rider back it has become a panic swerve.
Cars. "Car back" means there is a car approaching from behind. "Car up" means there is a car coming towards you. These calls travel up and down the line so that everyone knows to hold their line and stay tight. If the road is narrow, the front riders might need to move into single file — a call of "single out" or "single file" does that. When the car has passed, "clear" lets everyone know they can ride normally again.
Pulling off. The elbow flick. We covered this already. Do it clearly. Do it before you move. The rider behind you needs a second to register what is happening.
Everything else — calling cadence, shouting about the pace, giving unsolicited coaching advice — is optional at best and annoying at worst. If you are riding with people you do not know, keep the communication to the essentials. Hazards, cars, pulling off. If you are riding with your regular group and you have your own shorthand, that is between you and them.
One thing that does not get said enough: never shout instructions at riders you do not know. If someone in the group is riding badly — surging, half-wheeling, braking erratically — a quiet word at the next stop is always better than barking at them mid-ride. You do not know their experience level. You do not know if they are having a bad day. And shouting at someone while they are already struggling with the pace is a guaranteed way to make them ride worse, not better.
Common Mistakes
Surging on the front. You come to the front of the line and your instinct is to push. You are fresh from sitting in the draft, your legs feel good, and you ride five or ten watts harder than the rider before you. That does not sound like much. But the rider behind you is now five watts above what they were doing. The rider behind them closes a small gap that opened. By the fifth or sixth rider back, the effect is magnified and someone is chasing. Do not surge. Match the speed. Exactly.
Pulling too long. We covered this. Your pull should be measured in seconds, not minutes. If you are counting past 60 and you are not the strongest rider in the group, you are probably on the front too long.
Half-wheeling. This is a riding-two-abreast problem rather than a pace line problem, but it leaks into through-and-off. Half-wheeling is when you ride with your front wheel slightly ahead of the rider next to you. They speed up to match. You unconsciously speed up to maintain the gap. The pace creeps up without anyone deciding it should. Keep your front axle level with the rider beside you. If you notice your wheel drifting ahead, ease off. It is always your job to match them, not theirs to match you.
Not signalling. Pulling off without a signal forces the rider behind you to guess what you are doing. Are you pulling off? Are you slowing? Are you about to stop? The elbow flick takes half a second and removes all ambiguity.
Braking in the line. In a well-run pace line, nobody brakes. Speed adjustments happen by easing off the pedals, by sitting up slightly to catch more wind, or by moving very slightly out of the slipstream. If you find yourself braking in a pace line, either you are following too closely for your comfort level, the rider ahead is being erratic, or the pace is changing too quickly. In the first case, open the gap slightly. In the second, consider moving to a different wheel. In the third, the group has a pacing problem that needs to be fixed, not papered over with brake pads.
Leaving gaps. Every gap in the pace line costs the rider behind it. They lose the draft. They have to use energy to close it. And closing a gap creates an accordion effect — the rider behind them has to close a gap too, and so on down the line. If a gap opens in front of you, close it smoothly. Not with a sprint. A gradual increase of five to ten watts until the gap shuts. If you cannot close the gap, the pace is too high for you and it is time to sit on.
Reading the Group
A pace line that is working well has a particular feel to it. The speed is steady. The rotation is smooth. Nobody is surging. Nobody is braking. The gaps between riders are consistent. There is a rhythm to it — a cadence that goes beyond what your legs are doing and encompasses the whole group moving as a single unit.
You can feel when it is falling apart, too. The speed starts fluctuating. Gaps appear and close. Riders are braking. The pulls at the front get uneven — one rider does 45 seconds, the next does 15, the one after that does two minutes and comes off the front gasping. The back of the line starts rubber-banding, riders chasing and easing, chasing and easing.
When this happens, the fix is almost always the same: shorter pulls, steadier pace. The group has lost its rhythm and the way to get it back is to shorten the time each rider spends on the front and focus on maintaining exactly the same speed through the rotation. If you are near the front, set the example. Take a short pull at a steady pace. Pull off smoothly. The riders around you will match.
The other thing to watch for is the group splitting. On a hill, around a corner, after a junction — any disruption to the pace can split a pace line. The riders at the front ride through the junction and accelerate back to speed. The riders at the back have to wait for a car, then chase to close the gap, then recover from the chase, and now there is a 50-metre gap in the middle of the group. The front riders should ease up after any disruption until the group reforms. If you are at the front, look back. If you cannot see the last rider, you are going too fast for the group.
This is what separates a group that rides well together from a group that just happens to be on the same road. It is awareness. Not just of your own effort, but of the group as a system. The riders on your wheel. The riders ahead. The gaps forming and closing. The effort level rising and falling. Reading those signals and adjusting — that is pace line riding.
Practise Small
If this all sounds complicated, it is worth remembering that you do not have to learn it all at once.
Start with two-up riding. You and one other person, taking turns on the front of a quiet road. Get the pulling off technique smooth. Get the communication right. Get comfortable sitting on a wheel at half a bike length.
Then move to a group of four. Then six. Then a full chain gang. The principles are the same at every size — the only thing that changes is the number of variables. In a group of four, there are three riders to read. In a group of twenty, there are nineteen. But the fundamental skills — following a wheel, pulling through, pulling off, communicating, reading the group — those are identical.
The best pace line riders are not the strongest. They are the smoothest. They hold a consistent speed on the front. They pull off without anyone noticing. They close gaps without surging. They call hazards early and clearly. They know when to work and when to sit on. And they make everybody around them ride better by being predictable, aware, and calm.
That is the goal. Not heroic pulls. Not impressive average speeds. Smooth riding that makes the group work.
If you want to practise with riders who actually care about this stuff — people who will ride with you, not at you — come and talk to us in the Roadman Cycling community on Skool. We have riders at every level working on exactly these skills, from first-time group riders to seasoned chain gang regulars. You will find your people.