Gravel cycling has exploded in popularity, but many athletes underestimate how fundamentally different it is from road racing. Research from the University of Colorado found that riding on loose gravel surfaces increases energy expenditure by 15-25% compared to smooth asphalt at identical speeds. The reasons are mechanical: higher rolling resistance from wider tyres on variable terrain, continuous vibration absorption through the arms and core, and constant micro-adjustments in body position to maintain traction on loose surfaces.
Unlike road cycling, where steady-state power output dominates, gravel racing demands a stochastic power profile — repeated surges to navigate technical sections, steep loose climbs, and wind-exposed stretches with no drafting benefit. Heart rate data from gravel events shows athletes spend 25-35% more time above threshold compared to road races of similar duration. This variability changes everything about how you train, fuel, and pace.
Training Specificity for Gravel
Road fitness provides the aerobic foundation, but gravel-specific adaptations require targeted work. Include at least one weekly ride on loose surfaces — gravel roads, fire roads, or hard-packed trails — to train the neuromuscular patterns of maintaining traction and balance on unstable terrain. Your body needs to learn to relax the upper body while applying smooth, round pedal strokes rather than the choppy, high-torque efforts that break rear-wheel traction.
Supplement road rides with mountain bike skills sessions. Even 30 minutes per week practising cornering, descending loose surfaces, and bunny-hopping obstacles translates directly to gravel confidence. Add 2 strength sessions per week targeting core stability (planks, pallof presses, dead bugs) and upper body endurance (rows, push-ups, farmer carries) — your arms and shoulders will fatigue after 3-4 hours of vibration absorption if untrained.
Equipment and Tyre Pressure
Tyre pressure is the single most impactful equipment variable in gravel cycling. Running pressures between 25-40 PSI (depending on tyre width, rider weight, and terrain) dramatically affects comfort, traction, and rolling efficiency. A common mistake is running road-bike pressures of 70+ PSI on gravel tyres — this causes the tyre to bounce off surface irregularities rather than conforming to them, wasting energy and reducing control.
For a 70 kg rider on 40mm tyres, start at 30-35 PSI front and 33-38 PSI rear. Drop pressure by 2-3 PSI for looser or muddier conditions. Tubeless setups allow lower pressures without pinch-flat risk and are considered essential for serious gravel racing.
Nutrition Challenges: Self-Supported Fueling
Gravel events typically have no feed zones or roadside support. You must carry all nutrition for 3-8 hours of racing. This creates a carrying capacity problem: a 6-hour gravel race at 60-80 g/hour of carbohydrates requires 360-480 g of carbs — approximately 8-12 gels plus additional bars and drink mix. Use a frame bag, top-tube bag, and jersey pockets to distribute weight evenly. Pre-mix concentrated carbohydrate solutions (80-100 g per 500 ml bottle) to maximise caloric density in your bottles.
Practice eating and drinking on rough terrain. Unlike road cycling, removing one hand from the bars on gravel requires a smooth section — scout the course profile to identify fueling windows on flat, hard-packed segments.
Pacing Strategy for Gravel
The cardinal rule of gravel pacing: start conservative. A 2022 analysis of Unbound Gravel 200 finisher data showed that athletes who rode the first 50 km at less than 85% of threshold power were 40% more likely to finish in their target time than those who started above 90% of threshold. Aim for a negative-split approach — ride the first third at 80-85% of threshold, the middle third at 85-90%, and the final third at whatever you have left.
On climbs, resist the temptation to over-gear. Shift to an easier gear 1-2 clicks before you think you need to. On loose surfaces, a high-cadence, low-torque approach (85-95 RPM) maintains rear-wheel traction far better than grinding at 60 RPM, which causes the tyre to spin out on steep grades.
Common Mistakes and How to Avoid Them
- Inadequate food carrying: Calculate total caloric needs for the event duration and pack 10-15% extra for mechanicals, headwinds, or slower-than-planned segments.
- Ignoring hydration on cool days: Wind exposure and exertion on gravel still produce 0.5-1.5 L/hour of sweat loss even in 10-15 degrees C conditions.
- Skipping the bike fit: A gravel bike fit differs from a road fit — slightly higher bars, shorter reach, and wider contact points reduce fatigue on multi-hour rough-surface rides.
- No mechanical preparation: Carry a spare tube, tyre plug kit, multi-tool, and chain link. A 10-minute repair beats a DNF from an unpatchable flat 30 km from the finish.
For detailed fueling plans for long cycling events, read our complete guide on century ride nutrition. If you are planning your first long gravel event, use the Race Day Nutrition Planner to build a carry-capacity plan that matches your event duration, intensity, and bag setup.