Why Nutrition on the Trail Is Different
Fueling for a trail run or long hike isn't the same as grabbing lunch before a desk job. Your body is working continuously, often for several hours, over uneven terrain and changing conditions. Get your nutrition wrong and you'll hit the wall — that sudden, debilitating depletion of energy known as bonking or hitting the wall. Get it right and you'll feel strong from start to finish and recover well the following day.
Before You Go: Pre-Effort Nutrition
What you eat in the 2–3 hours before a trail effort significantly impacts your performance. The goal is to top up muscle glycogen (stored energy) without causing digestive discomfort on the move.
- 2–3 hours before: A balanced meal with complex carbohydrates, moderate protein, and low fat/fibre. Oat porridge with banana, rice with eggs, or wholegrain toast with peanut butter work well.
- 30–60 minutes before: A small, easily digestible snack if needed — a banana, an energy bar, or a small handful of dates.
- Avoid: High-fat meals, heavy protein, and high-fibre foods close to your start time. These slow digestion and can cause nausea or stomach cramps.
During Your Effort: The Fueling Window
For efforts lasting under 60–75 minutes, water is usually sufficient — your glycogen stores can manage. Beyond that, you need to start eating to maintain blood sugar and energy levels.
Carbohydrates Are Your Primary Fuel
During moderate to high-intensity trail efforts, carbohydrates are your most efficient fuel source. Aim to consume 30–60g of carbohydrates per hour for efforts lasting 2+ hours. For very long efforts (4+ hours), some runners can train their gut to handle up to 90g/hour using a mix of glucose and fructose sources.
Best Trail Foods to Carry
- Real food: Dates, bananas, boiled potatoes with salt, rice cakes, peanut butter sandwiches, flapjacks, dried mango
- Packaged options: Energy gels, chews, sports bars — convenient but vary in palatability over long efforts
- Savoury options: Salted pretzels, crackers with cheese, small sandwiches — essential for very long efforts when sweet foods become hard to stomach
Hydration: More Than Just Water
Dehydration degrades performance faster than almost anything else. A rough guideline is 400–800ml of fluid per hour, adjusted for heat, humidity, and your individual sweat rate. In warm conditions or on long efforts, plain water isn't enough — you also need to replace electrolytes, particularly sodium.
Add electrolyte tablets or capsules to your water, or choose salty snacks during your effort. Signs of electrolyte imbalance include muscle cramps, headaches, and a feeling of bloating despite drinking plenty of water.
After Your Effort: Recovery Nutrition
What you eat in the 30–60 minute window after finishing a trail effort dramatically affects how quickly you recover. This "glycogen window" is when your muscles are most receptive to replenishment.
- Carbohydrates: To replenish depleted glycogen stores — rice, pasta, bread, fruit
- Protein: To repair muscle tissue — eggs, chicken, dairy, legumes, protein shake if appetite is low
- Fluids and electrolytes: Continue rehydrating — don't stop at the finish line
A recovery meal might look like: rice with grilled salmon and vegetables, or a smoothie with banana, Greek yoghurt, milk, and oats if solid food is unappealing immediately after a hard effort.
Practical Tips to Avoid Common Mistakes
- Eat before you're hungry. By the time hunger hits on the trail, your energy has already dipped.
- Set a timer. Many runners forget to eat when focused on the trail. A reminder every 30–45 minutes helps.
- Test your nutrition in training. Never try a new food strategy on race day or a critical hike — test it first.
- Carry more than you think you need. Weather, terrain, and pace all change your calorie burn unpredictably.
Nutrition is the easiest performance variable to improve with practice and attention. Small adjustments in fueling strategy can be the difference between suffering through the last miles and finishing strong.