You're 90 minutes into your target sportive, the road tilts up for the first proper climb, and your legs feel like they belong to someone else. Stars in your peripheral vision. Power dropping. And all you can think is — I trained for this. What went wrong?
Nine times out of ten, the answer isn't fitness. It's breakfast. Or the lack of it. Race day nutrition fails because riders treat it as an afterthought — grab a banana, fill a bottle, wing it from the gun. The race doesn't start when you clip in. It starts three hours before, with a meal most riders either skip or get wrong.
This is the hour-by-hour playbook, built on Asker Jeukendrup's carbohydrate research and conversations we've had on the podcast with World Tour nutritionists. Whether you're racing 120km or surviving 200km, the principles are the same.
The Night Before: Set Yourself Up
Let me be really clear about this — the night before is not the time for a massive feed. The old pasta party tradition is fun but it's not where the real work happens. (We've covered the modern approach to carb loading in a separate post — the science has moved well past the pasta mountain.)
What you want the night before is a familiar, carbohydrate-rich meal that you've eaten before training rides. White rice, pasta, bread — whatever sits well in your stomach. Keep the fibre moderate. Keep the fat moderate. This is not the night for a spicy curry or an experimental recipe.
Hydration matters too. Not in the "drink three litres of water before bed" way — that just means you're up four times in the night. Sip consistently through the evening. A drink with electrolytes helps. The goal is to start the morning in a good hydration state, not to force-hydrate at 6am.
Race Morning: 3 Hours to Start
Your race day breakfast is one of the most important meals you'll eat all year. Get this wrong and no amount of gels on the bike will save you.
The target: 2-3g of carbohydrate per kilogram of body weight, eaten 3 hours before your start time. For a 75kg rider, that's 150-225g of carbs. That sounds like a lot, and it is — you're topping off your liver glycogen stores after the overnight fast and setting yourself up with readily available fuel.
What does that actually look like? Porridge made with milk, a sliced banana, a tablespoon of honey, and some white toast with jam on the side. Or rice with a little scrambled egg and some fruit juice. Or a couple of bagels with honey and a banana smoothie.
The key principles for this meal:
Keep fibre low. This is not the morning for a bowl of bran flakes. Fibre slows gastric emptying, and you want this food processed and available as fuel, not sitting in your gut when the road tilts up.
Keep fat low-to-moderate. A small amount of protein is fine — some egg, a splash of milk — but this is a carb-focused meal. Fat slows digestion even more than fibre.
Keep it familiar. I cannot stress this enough. If you've never eaten porridge before a ride, race morning is not the time to start. Every single food you eat on race day should be something you've tested in training. Jeukendrup has been saying this for two decades and people still ignore it.
Drink with breakfast — water, coffee, juice — but don't force fluids down. You're hydrated from the night before. A coffee here is fine and serves a dual purpose: familiar comfort and your first caffeine dose.
60-15 Minutes Before the Start
You've eaten breakfast. You've done your warm-up or your nervous pacing in the car park. Now there's a window between 15 and 30 minutes before the start where a small top-up makes a difference.
This is 20-30g of carbs. An energy gel, half a banana, a few swigs of energy drink. Nothing heavy. The purpose is to bring blood sugar up slightly and signal to your body that fuel is incoming — this blunts the cortisol spike that comes with race-start intensity.
Here's where caffeine timing matters. Caffeine peaks in your bloodstream roughly 45-60 minutes after you take it. If your race starts at 9am and you had coffee with breakfast at 6am, that caffeine has already peaked and is on the way down. A caffeinated gel at 8:15-8:30am gives you a peak right around the time you'll need it.
The research from Professor Romain Meeusen and others consistently shows 3-6mg of caffeine per kg of body weight as the effective range for endurance performance. For a 75kg rider, that's 225-450mg total across the day. A strong coffee is about 80-100mg. A caffeinated gel is typically 30-50mg. You don't need to nail these numbers perfectly — but knowing the ballpark stops you from either under-dosing or vibrating off the bike.
Hour One: Start Before You're Hungry
This is where most people go wrong. The first hour feels easy. Adrenaline is high. Effort feels manageable. Eating feels unnecessary.
Eat anyway.
By the time you feel like you need food, you're already behind. Glycogen depletion is happening from the first pedal stroke, and the gap between your intake and your expenditure only widens the longer you wait.
For events under 2.5 hours, the target is 60-90g of carbs per hour. For events longer than 2.5 hours — and this is where Jeukendrup's research changed everything — you should be targeting 90-120g per hour using a glucose-fructose blend.
The science behind this is worth understanding. Your gut can only absorb about 60g of glucose per hour through the SGLT1 transporter. That used to be the ceiling. But fructose uses a completely different transporter — GLUT5. By combining glucose (or maltodextrin) with fructose in roughly a 1-to-0.8 ratio, you can push total absorption up to 90g, even 120g per hour. Jeukendrup's lab at the University of Birmingham demonstrated this repeatedly, and it's now standard practice in the World Tour.
In the first hour, start with 60-80g of carbs. This is the ramp-up phase. A bottle of concentrated drink mix (40-50g of carbs) plus a gel (25-30g) gets you there easily. If you're doing a sportive, this is also a good time for solid food — a rice cake, a bar, something you've practised with. Road races tend to be too intense early for solids, so liquid and gels are your friends.
Hydration: aim for 500-750ml per hour depending on conditions. Hot days push you toward the upper end. Cool days toward the lower. Don't drink plain water if you're also taking on carb-rich foods — you'll dilute gastric concentration and slow absorption. Use an electrolyte mix in your water bottle and get your carbs from food and gels, or use a carb-electrolyte drink and get everything in one go.
Hours Two and Three: The Engine Room
This is where discipline pays off and where most amateur race day nutrition plans collapse. You're deep in the effort now. The race has settled or it's heating up. Eating becomes harder because intensity is higher and the stomach starts to protest if you haven't trained it.
Maintain 80-120g of carbs per hour. By now, the mix should be shifting away from solids and toward gels and liquids. Your gut is under more physiological stress at higher intensities — blood flow gets redirected from the digestive system to working muscles. Liquid calories and gels are processed faster and are less likely to cause GI distress.
Here's my routine for a long sportive, and it's roughly what Sam Impey described when he was on the podcast talking about World Tour fueling. Set a timer on your head unit for every 20 minutes. Every time it beeps, eat or drink something. It sounds robotic, but it works. Left to your own judgement, you'll skip feeds because you're concentrating on the road or the group or the climb ahead.
Every 20 minutes: a gel, a few large mouthfuls of drink mix, or a bite of something. That cadence gives you three feeding windows per hour. A gel with 30g of carbs three times an hour is 90g. A gel twice plus a 500ml bottle with 60g of carbs in it gets you to 120g. The maths is simple once you build the habit.
Salt matters too. You're losing sodium in sweat — anywhere from 300-1500mg per litre depending on your sweat rate and genetics. Most drink mixes contain some sodium, but if it's hot or you're a heavy sweater, add an electrolyte tab to your water bottle or take salt capsules. Cramping in the final hour of a race is often a sodium issue, not a fitness one.
The Final Hour: Don't Stop Now
A common mistake in the final 45-60 minutes of a race is to stop eating. The logic feels sound — "I'm nearly there, I don't need more fuel." But your body is running on what you ate 30-45 minutes ago, not what you're eating now. Stop fueling with 60 minutes to go and you'll feel it in the last 20 minutes when you need your legs the most.
Keep taking in carbs right through to the final 20 minutes. Gels are the easiest option here. A caffeinated gel in the last 45 minutes gives you both a carb hit and a caffeine boost — Jeukendrup and others have shown that late-race caffeine can reduce perceived exertion and improve time trial performance in the closing stages.
If this is a race with a decisive final climb or a sprint finish, that last caffeinated gel could be the difference between holding a wheel and watching it go.
Sportive vs. Road Race: The Practical Differences
The physiology doesn't change. Your muscles need the same fuel regardless of whether you have a number pinned on your back or you're riding a timed sportive. But the logistics are different.
In a sportive, you have feed stations. You can stop. You can take a moment to eat a proper rice cake or a sandwich. The intensity is generally steadier — you're riding at tempo or sweetspot for most of the day, not surging and recovering like a road race. This means your gut handles solid food better for longer. Take advantage of that. Real food in the first half, shifting to gels and liquids in the second half is a solid approach.
In a road race, you're at the mercy of the bunch. Intensity is variable. There are surges, attacks, climbs where you can't take your hands off the bars. Fueling needs to be automatic — bottles positioned where you can grab them without looking, gels in a pocket where you can reach them with one hand, products that open easily in the wind. Everything practised. No surprises.
I remember a race where I'd bought a new brand of gel the morning of the event. Different texture, different taste, slightly different packaging. I spent 30 seconds trying to open it on a descent, nearly crashed, finally got it open, and the taste was so sweet it triggered a wave of nausea that lasted 20 minutes. Lesson learned. Forever.
The Golden Rule: Nothing New on Race Day
Jeukendrup calls this the first rule of sports nutrition and it's the one that gets broken most often. Every gel, every drink mix, every bar, every piece of real food you eat during a race should have been tested multiple times in training at race intensity.
Your gut is trainable — research from Jeukendrup's group and others has shown that you can increase carbohydrate absorption by consistently practising high intakes during training. But that adaptation takes weeks, not hours. If you've been taking 40g of carbs per hour in training and you suddenly try to do 120g in a race, your stomach will revolt.
Start practising your race nutrition plan 6-8 weeks before your target event. Build up gradually. If your gut can handle 60g per hour now, add 10-15g per week until you hit your target. Use the same products. The same timing. The same bottle concentration. By race day, it should feel automatic.
Post-Race: The First 30 Minutes
The race is over. You're cooked. The last thing you want is food. Eat anyway.
The glycogen resynthesis window is real — the first 30 minutes after exercise is when your muscles are most receptive to carbohydrate uptake, with elevated GLUT4 transporter activity. A recovery drink or a meal with 1-1.2g of carbs per kg of body weight plus 20-30g of protein starts the repair process.
A bottle of chocolate milk, a recovery shake, a sandwich with some chicken — whatever you can stomach. This isn't about performance anymore. It's about recovering well enough to train again in two days.
Putting It All Together
Here's the complete timeline for a 75kg rider doing a 4-hour sportive with an 8am start:
Night before: Familiar carb-rich dinner. Sip fluids through the evening. Lay out all race day nutrition and check quantities.
5:00am: Breakfast — porridge with banana and honey, two slices of white toast with jam, coffee. Approximately 180g of carbs.
7:15am: Top-up — one gel (25g carbs) and a few sips of drink mix.
7:30am: Caffeinated gel — timed so caffeine peaks around 8:15-8:30.
8:00am - 9:00am (Hour 1): 500ml drink mix (50g carbs) + 1 gel (30g carbs) + 1 rice cake (20-25g carbs) = ~100g carbs.
9:00am - 10:00am (Hour 2): 500ml drink mix (50g carbs) + 2 gels (60g carbs) = ~110g carbs.
10:00am - 11:00am (Hour 3): 500ml drink mix (50g carbs) + 2 gels (60g carbs) = ~110g carbs.
11:00am - 12:00pm (Hour 4): 500ml drink mix (50g carbs) + 1 caffeinated gel (30g carbs) + 1 regular gel (30g carbs) = ~110g carbs.
Post-race: Recovery drink or meal within 30 minutes. 80-90g carbs + 25g protein.
That's a plan. Not a vague intention. A plan with specific numbers, specific products, specific timing. Print it out. Tape it to your stem. Set the timer on your head unit. And practise it — all of it — before race day.
The difference between the rider who fades at 140km and the one who's still pushing in the final 20km almost always comes down to what they ate, not how they trained. And the good news is, this is completely fixable. You just need a plan and the discipline to follow it.
If you want help building a race nutrition plan specific to your events and your body, come join us in the Roadman Cycling community on Skool. We'll work through it with you.