Hiking Nutrition and Trail Food: What to Eat and How Much

Hiking burns significantly more calories than most people expect — a moderately fit person carrying a day pack on a trail with significant elevation gain can burn 400 to 700 calories per hour. Eating adequately on trail is a skill as much as a knowledge gap — most hikers know they should eat but eat too little too infrequently and wonder why they feel terrible on the descent.

The Calorie Density Principle

For backpacking, calorie density — calories per ounce — is the primary food selection criterion. At 100 to 120 calories per ounce, trail mix, nut butters, and hard cheeses are among the most calorie-dense foods available. Freeze-dried meals average 100 to 130 calories per ounce. Fresh vegetables are 10 to 30 calories per ounce — too low for backpacking except as small flavor additions. Day hiking food is less constrained by weight but benefits from the same high-calorie-density principle for sustained energy.

The Eating Schedule That Works

Eat before you’re hungry and drink before you’re thirsty. By the time thirst or hunger registers clearly, you are already in a mild deficit that will affect your performance and enjoyment. Eat a small snack every 90 to 120 minutes rather than waiting for full meal stops. This maintains blood glucose at a stable level that sustains energy and mood more effectively than waiting for hunger and eating a large meal.

Backpacking Meal Options

Freeze-dried meals are the most convenient backpacking option — boiling water and a ten-minute wait produces a hot meal weighing about three to four ounces. Mountain House and Backpacker’s Pantry are the most widely available brands. For lighter and cheaper alternatives: instant mashed potatoes with olive oil and dried cheese, ramen noodles with protein added, oatmeal with dried fruit and nut butter. Always carry at least one more day of food than the trip requires — weather, injury, or navigation problems can extend any trip unexpectedly.