The Weekend Warrior Who Finally Stopped Crashing at Mile 20
Mark was a strong cyclist who hit the wall every single long ride. His secret? Not more training — it was finally learning how to fuel.
Quick Answer
Mark fixed his chronic bonking by learning to consume 60–90 g of carbs per hour, practice gut training on long rides, and use a mix of drinks, gels, and real food.
Mark had the fitness. Every weekend, he'd roll out with his cycling club at 6 AM, fresh and ready to crush the century ride.
By mile 20, he'd be struggling. By mile 40, he'd be dropped. By mile 60, he'd be walking his bike up hills, stomach churning, legs shaking.
This happened week after week, year after year.
The frustrating part? His power numbers were solid. His heart rate was textbook. His training log showed 15-hour weeks and consistent base building.
The problem wasn't his fitness. It was his fueling.
The Typical Amateur Cyclist's Mistake
Mark did what most amateur cyclists do:
- Skip breakfast before early rides (too early to eat)
- Grab a gel at mile 10, maybe another at mile 30
- Drink water, occasionally sports drink
- Eat when he felt hungry — which was usually too late
- Finish rides completely depleted and confused
Total carb intake on a 5-hour ride: maybe 40–60 grams. His body needed 300–450 grams to maintain performance.
The Wake-Up Call
The breaking point came at a local century event Mark had done five times.
He was riding well through the first 50 miles. Then, like clockwork, the crash. He watched 30 riders pass him in the final 25 miles, including his 58-year-old neighbor who "didn't even train that much."
That night, Mark went home and started researching. He found the same statistic everywhere: most amateur cyclists finish long rides severely underfueled.
The Numbers That Changed Everything
Here's what Mark learned:
| Feature | Rider Type | Carbs Per Hour | Performance |
|---|---|---|---|
| Underfueling | 20–30 g/hr | Bonking, power drop, mental fog | |
| Average rider | 30–45 g/hr | Maintaining, but leaving power on the table | |
| Properly fueled | 60–90 g/hr | Sustainable power, strong finish |
The research was clear: his body could absorb and use 60–90 grams of carbs per hour if he trained his gut to handle it.
Mark's 8-Week Transformation
Here's exactly what Mark did:
- Week 1–2: Added one bottle of carb drink to every ride, targeting 30 g/hour
- Week 3–4: Added gels between bottles, building to 45 g/hour
- Week 5–6: Introduced solid food on rides (rice cakes, waffles), hitting 60 g/hour
- Week 7–8: Mixed everything — drinks, gels, solids — reaching 75–90 g/hour
The key was consistency. Mark stopped eating "when he felt like it" and started eating on a schedule: every 20–30 minutes, something carbs, something fluids, something sodium.
The New Strategy
Mark's century ride fueling now looks like this:
| Feature | Time | Fuel | Carbs |
|---|---|---|---|
| Pre-ride (2 hrs before) | Bagel with jam + sports drink | 70 g | |
| Mile 0–30 | Bottle 1 (carb mix) + gel at 15 | 45 g | |
| Mile 30–60 | Bottle 2 + 2 gels + rice cake at 45 | 85 g | |
| Mile 60–100 | Bottle 3 (water + electrolytes) + 3 gels | 75 g | |
| Total | ~275 g carbs over 5 hours |
The Results
Eight weeks later, Mark did the same century ride.
- Finished in the top 10 for his age group
- Average power within 5 watts of his indoor FTP
- No bonk, no mental fog, no walking hills
- Said hello to his 58-year-old neighbor at mile 95 — they finished together
The best part? He felt strong enough to ride home.
What You Can Learn From Mark
- Underfueling is the #1 performance killer in amateur endurance sports.
- Your gut can adapt to high carb intakes — but it needs training.
- Schedule your fueling, don't wait for hunger signals.
- Mix drink, gel, and solid sources to hit targets without GI overload.
- Practice your race-day strategy in training so there are no surprises.
Build your own fueling strategy.
Download MAVRFrequently Asked Questions (FAQ)
How do I know if I'm underfueling?
Common signs: bonking after 90 minutes, mid-ride energy crashes, feeling ravenous after rides, needing multiple days to recover.
Can I really absorb 90 grams of carbs per hour?
Yes, with gut training. Start lower and build up by 10–15 g/week. Most athletes can reach 60–90 g/hr.
What's the best fuel for cycling?
A mix: carb drinks for steady intake, gels for quick hits, and solids like rice cakes for variety and gut relief.
Does MAVR help with cycling nutrition?
Yes. MAVR builds hour-by-hour fueling plans for any ride length, from 2-hour training sessions to 100-mile events.