Ruck Calorie Calculator June 25, 2025 by EC Your Weight (kg): Ruck Weight (kg): Duration (minutes): Pace: Slow (3 mph / 4.8 km/h) Moderate (3.5 mph / 5.6 km/h) Fast (4 mph / 6.4 km/h) Very Fast (4.5 mph+) Calculate Calories Enter values and click calculate.