Most cyclists treat their commute as dead miles. A necessary evil that burns matches without building fitness. Here is why that thinking is costing you the easiest training hours of your week.
The Wasted Hours
Think about the typical time-crunched rider. He drives to work, sits at a desk for nine hours, drives home, eats dinner with the family, and then — if the stars align and nobody needs a lift to football practice — sets up the turbo trainer for a 60-minute session. He has spent an hour behind a steering wheel to create one hour of training. And he wonders why he is not getting faster.
Now think about the rider who cycles to work. Thirty minutes each way, five days a week. That is five hours on the bike before he has even thought about a training plan. Five hours that required zero extra time, zero negotiation with a partner, zero guilt about missing bedtime. The miles were happening anyway. The only question is whether they are working for him or against him.
For most commuters, they are working against him. Because most commuters do the same thing every ride: leave the house, ride at whatever effort feels natural, arrive mildly sweaty and mildly tired. Not easy enough to be recovery. Not hard enough to be a stimulus. Just moderate. Every single day. The grey zone — that no-man's land between easy and hard where adaptation is slowest and fatigue accumulates fastest — swallows commuters whole.
A 30-minute commute each way is five hours a week. A 45-minute commute is seven and a half. Add a single long ride on Saturday and you are looking at eight, nine, ten hours of training volume. That puts you ahead of the vast majority of amateur cyclists in the UK and Ireland, most of whom are struggling to find six hours around work, family, and the general chaos of adult life.
But Stephen Seiler's 80/20 model only works if you actually polarise the effort — make the easy rides easy and the hard rides hard. The commuter who rides at the same moderate intensity in both directions, every day, is violating the single most important principle of structured training.
The fix is simple in concept and requires discipline in practice: split your commute into two distinct sessions. The morning leg is easy. The evening leg — on selected days — is hard. That one decision transforms dead miles into structured training.
The Morning Leg: Why Easy Means Easy
The morning commute has one job: get you to work in better shape than you left the house. Not fitter. Not faster. Just alert, awake, and ready for whatever the day throws at you.
That means Zone 1-2. Aerobic. Conversational. The kind of effort where you could hold a phone conversation and the person on the other end would not know you were on a bike. If you are using a power meter, that is roughly 55-70 per cent of FTP. If you are going by heart rate, stay below 75 per cent of your maximum.
Here is why this matters, and why most commuters get it wrong.
When you ride at moderate intensity first thing in the morning — 75-85 per cent of threshold, the effort most people default to — cortisol spikes, glycogen stores deplete, and the sympathetic nervous system fires up and stays up. You arrive at your desk buzzing with stress hormones that feel productive but are not. You are wired, not well. And you have burned through fuel reserves that your body needed for the quality session later in the day.
Dr Andy Galpin has spoken about this on the podcast: the cortisol response to moderate exercise is dose-dependent. A genuine easy ride produces a small, healthy bump that clears within an hour. A moderate-to-hard effort produces a spike that takes three to four hours to normalise. That matters if you need to concentrate, make decisions, and not fall asleep at your desk by 11 a.m.
The morning commute at Zone 1-2 does something different. It wakes the cardiovascular system gently, clears residual stiffness from sleep, and delivers you to work with a clear head and warm legs. And those easy miles accumulate. Over weeks and months, they build the aerobic base that underpins everything else — mitochondrial density, capillary networks around muscle fibres, fat oxidation pathways. Coaches like Joe Friel and Phil Mack have spent careers emphasising this: the aerobic engine is built on volume at low intensity. The commute delivers that volume for free.
The rules for the morning leg are non-negotiable:
- Cap the effort. If you have a power meter, set an alert for 70 per cent of FTP. If you are going by feel, you should arrive at work barely having broken a sweat. The ride should feel almost too easy. That is the point.
- Resist the race. You will be overtaken by other commuters. Some of them will be on e-bikes. Let them go. Your ego is not worth cortisol poisoning your morning.
- Use the time. Listen to a podcast. Think through your day. Call your mum. The mental space of an easy commute is one of its greatest benefits — it is the only thirty minutes of your day where nobody wants anything from you.
Easy in. Hard home. That is the mantra.
The Evening Leg: Where the Quality Lives
The ride home is where your commute stops being transport and starts being training. And it has natural advantages that most riders never think about.
First, you are fuelled. You have been eating all day. Glycogen stores are topped up from lunch and whatever you had mid-afternoon. Compare that to the turbo session at 9 p.m. after a rushed dinner — you are asking your body to perform on scraps.
Second, you do not need to be mentally sharp afterwards. You can bury yourself in a set of threshold intervals and crawl through the front door looking like you have been dragged through a hedge. Your sofa does not care about your cognitive state.
Third, you know the route. You have ridden it a hundred times. That familiarity is essential for interval work — you cannot hit precise power targets while worrying about the road.
So what does a structured evening commute look like?
Sweet spot session (2-3 days per week): After a ten-minute warm-up from the office, settle into 88-93 per cent of FTP for the sustained stretches of your route. Hold the effort through the clear sections, back off through junctions and traffic, then pick it up again. Over a 30-40 minute commute, you might accumulate 15-20 minutes of sweet spot work. That is a meaningful training dose — the kind of session that builds threshold power and muscular endurance without the recovery cost of full threshold work.
Threshold repeats (1-2 days per week): Map out two or three uninterrupted stretches of 3-5 minutes each. These become your interval windows. Hit 95-105 per cent of FTP during these blocks, then recover at Zone 1-2 through the junctions and built-up sections between them. Three sets of four minutes at threshold with three minutes of recovery is a proper interval session by any measure.
Tempo effort (alternative option): If the route does not lend itself to intervals — too many stops, too much traffic — a sustained tempo effort at 76-87 per cent of FTP works well. Not as potent as sweet spot or threshold for acute adaptation, but it builds muscular endurance and teaches the body to metabolise lactate at moderate intensities. A 30-minute tempo commute twice a week is solid training for any age-group rider.
The key is to treat these rides with the same respect you would give a coached session. Warm up properly. Hit the targets. Cool down. Upload to TrainingPeaks or Strava or whatever you use and review the file. If the numbers were right, you just completed a quality session without adding a single extra minute to your day.
Mapping Your Intervals
Interval commuting works on routes you know intimately. It fails on routes you are guessing at. The preparation matters.
Ride your commute route three or four times without any structure. Just ride it and pay attention. Where are the uninterrupted stretches? Where are the traffic lights that always catch you? Where does the cycle path open up? Where does it narrow into shared pavement where you cannot hold a line, let alone a power target?
Then map it. Not formally — you do not need cartography software. Just a mental picture of where the work can happen and where it cannot.
Most commute routes break down into three types of section. Work sections — clear stretches where you can hold a consistent effort for three minutes or more. These are your interval windows. Recovery sections — traffic lights, roundabouts, busy junctions that become natural recovery periods. The recovery writes itself. Dead sections — shared paths with pedestrians, narrow lanes with parked cars. Accept these and factor them in.
Here is where it gets interesting: you probably need more than one route.
The easy route. Most direct, lowest-stress path. Bike paths, quiet roads, minimal risk. This is your morning commute and your recovery-day ride home.
The interval route. Slightly longer, chosen specifically for its work sections. Maybe it follows a ring road with long, uninterrupted stretches. Maybe it passes through an industrial estate that is deserted after 5 p.m. An extra ten minutes of commute time that delivers twenty minutes of structured work is a trade worth making.
The hilly route. One or two proper climbs that transform the commute into a strength-endurance session. Three minutes at 8 per cent gradient is three minutes of over-geared threshold work. Hills do not care about traffic lights.
Match the route to the training day. Easy route both ways on Monday. Interval route home on Tuesday. Hilly route home on Thursday. The commute becomes a training tool with options, not a fixed-distance slog.
Gear That Makes It Sustainable
Commute training fails when the logistics become a burden. The actual riding is the easy part. It is the kit, the cleaning, the carrying, and the mechanicals that grind people down after three weeks and send them back to the car.
Here is what separates the riders who commute-train for years from the ones who last a month.
Mudguards. Full-length mudguards that actually cover the tyre. Not stubby clip-ons that deflect spray onto your shoes. Proper guards — SKS Longboards, Crud Roadracers, or similar — that keep your backside dry and your drivetrain clean. In the UK and Ireland, where it rains more days than it does not, mudguards are not optional equipment. They are the difference between arriving at work presentable and arriving looking like you fell in a canal.
Bag systems. A backpack is the default choice and the worst one. It shifts your centre of gravity, restricts your breathing, traps heat, and soaks your jersey. A rack bag on a rear carrier distributes weight low and central. A frame bag sits inside the front triangle and barely affects handling. The principle: keep weight off your back and as close to the bike's centre of gravity as possible.
Second wheelset. The single best investment a commute-trainer can make. Aluminium rims fitted with wider tyres (28-32mm) in a puncture-resistant compound — Continental Gatorskins or Schwalbe Marathon Plus. Swap them onto your road bike in five minutes. Good wheels stay clean for weekends.
Tyres. A 25mm tyre pumped to 100 psi on wet, debris-strewn urban roads is a puncture magnet. A 30mm tyre at 70 psi rolls over glass, gravel, and potholes with far more resilience. Jan Heine's work at Bicycle Quarterly has shown that rolling resistance on rough surfaces actually favours the wider tyre at lower pressure. Go wider. Run less pressure. Puncture less.
Lights. A 400-lumen front light minimum — bright enough to see by, not just to be seen. A rear light with daytime flash mode. USB charging cables at your desk. In winter, you are riding in the dark both ways.
Clothing at work. If your office has a shower, carry clean clothes and change. If it does not, ride easy enough in the morning that a baby wipe and deodorant do the job. Some riders keep a week's worth of shirts at the office on Monday. Others wear merino base layers that handle sweat without producing an odour that clears a meeting room.
Fuelling the Double Commute
Here is where commute training goes wrong for a lot of riders: they ride twice a day and eat as if they rode once. Or not at all.
A double commute — easy in, structured session home — is a two-session training day. It needs to be fuelled like one. That does not mean eating constantly. It means eating deliberately, at the right times, with the right foods.
Before the morning commute (6:00-6:30 a.m.): Something small. Porridge with honey, toast with peanut butter, a banana. You are riding Zone 1-2 for thirty minutes — you do not need a three-course breakfast. But you do need blood sugar above baseline. Starting the day on empty is a false economy when you need to function at a desk for four hours.
Mid-morning at work (10:00-10:30 a.m.): This is the meal most commuters miss, and it is the one that determines whether the evening session succeeds or fails. Your morning ride has burned through some glycogen. If you do not replace it, you arrive at 5 p.m. with half a tank. Yoghurt with granola, a sandwich, rice cakes with nut butter — something that tops up the stores.
Lunch (12:30-1:30 p.m.): A full meal. This is not the time for a sad desk salad if you have a threshold session scheduled for the ride home. Rice, pasta, potatoes — whatever you favour — with a solid protein source. The research from Asker Jeukendrup is clear: performance in afternoon and evening exercise is directly linked to carbohydrate availability from preceding meals.
Mid-afternoon (3:00-3:30 p.m.): A final top-up. A banana, a flapjack, a handful of dates. Small, carbohydrate-dense, easily digested. Insurance for the first interval on the way home.
Post-ride dinner (within 60-90 minutes of arriving home): Protein for muscle repair — 30-40 grams — and carbohydrates to replace what the evening session burned through. This is also the meal where you eat with your family, which matters more than any macro ratio.
The rider who skips mid-morning snacks, eats a light lunch, and arrives at the bike at 5 p.m. running on caffeine and hope will not hit his power targets. Nutrition on commute days is not complicated, but it requires planning. Prepare food the night before. Bring it to work. Eat it at the right times.
The Weekly Structure
Theory is nice. A weekly plan is better. Here is how commute training fits into an actual seven-day structure for a rider with a 30-minute commute each way.
Monday — Easy / Easy. Zone 1-2 both ways. 60 minutes of aerobic volume. Start the week gently.
Tuesday — Easy / Sweet Spot. Easy commute in. Evening: 10 min warm-up, 15-20 min sweet spot (88-93% FTP) on the interval route, cool-down. ~70 minutes total. First quality session of the week.
Wednesday — Easy / Easy. Zone 1-2 both ways. 60 minutes. Recovery between hard sessions.
Thursday — Easy / Threshold. Easy commute in. Evening: 10 min warm-up, 3 x 4 min at 95-105% FTP with 3 min recovery, cool-down. ~70 minutes total. Hardest commute session of the week.
Friday — Easy / Recovery or Rest. Easy commute in. Spin home at Zone 1 only, or take the train. 30-60 minutes. Preparing for the weekend.
Saturday — Long Ride. Two to three hours at Zone 2 and tempo. Chain gangs, club runs, solo explorations — whatever keeps you coming back.
Sunday — Rest. Off the bike. Walk the dog. Play with the kids.
Weekly total: 8-10 hours.
Two quality sessions, three easy double commutes, a long ride, and proper rest. The TSS spread is sensible — hard days separated by easy days, the weekend ride building on consistent volume, Sunday offering full recovery. The rider doing this consistently is accumulating training load that rivals riders who think they need to be on the turbo every evening. And he has not sacrificed a single dinner with his family. The hours were already there. He just started using them.
The Mental Shift
This is the part that changes everything, and it has nothing to do with physiology.
When you stop seeing your commute as transport and start seeing it as training, something shifts in how you treat it. You protect it. You plan for it. You fuel for it. You lay out your kit the night before because the morning ride matters. You eat a proper lunch because the evening session matters. You map routes and check tyre pressure and charge lights — not because you are a commuter who also trains, but because you are an athlete who happens to commute.
That distinction is not semantic. It changes behaviour.
The commuter who treats the ride as transport will skip it when it rains. The athlete who treats it as training will put on a rain jacket, because you do not skip a session because of weather. The commuter will ride at whatever effort feels natural. The athlete will cap the morning effort and hit targets in the evening, because training without structure is just exercise. The commuter will grab whatever is in the canteen for lunch. The athlete will bring food from home, because fuelling determines whether the evening session is productive or wasted.
Over a year, these small behavioural differences compound. The rider who commute-trains with intention accumulates 400-500 hours of structured volume. The rider who commute-rides on auto-pilot accumulates the same hours but with a fraction of the adaptation, because the intensity was never right on any given day.
And here is the part that matters most for anyone reading this who is 35, 40, 45, 50 and wondering where the training hours are supposed to come from: you already have them. They are sitting in your commute. Five hours a week, minimum, that you were going to spend on the bike anyway. The only thing standing between you and a properly structured training week is the decision to treat those hours with respect.
If you are looking for structured coaching support, a community of riders who are doing exactly this — fitting serious training around real lives — and accountability that keeps the consistency honest, the Roadman Cycling community on Skool is where that conversation happens every day.
The rider who builds ten hours of structured volume from commuting alone is training more than 90 per cent of amateur cyclists. Without sacrificing a single evening with the family. Without setting up the turbo at 9 p.m. after the kids are in bed. Without the guilt, the negotiation, or the nagging feeling that you should be somewhere else.
Just you, the bike, and the road you were riding anyway. Make it count.