Free Tool
Ruck Pace Calculator
Got two of the three? Tell us how far, how long, or how fast, and we'll figure out the missing one. You'll also see your effort level, your time at each mile, and how much the pack is slowing you down.
What do you want to know?
See how much your pack slows you down
Distance
3.00 mi
Time
54:00
Pace
18:00
min/mile
A sustainable training pace. Most rucks live here.
Easy: 20+ min/mile
A pace where you can hold a conversation. Good for recovery days.
Steady: 17-20 min/mile
A sustainable training pace. Most rucks live here.
Brisk: 14-17 min/mile
Picking up the pace. Good for building event-day fitness.
Fast: Under 14 min/mile
Military pace. Hard to keep up with a heavy ruck.
How to Use the Ruck Pace Calculator
Pace questions come up all the time in rucking. If a 12-mile ruck has to be done before dark, you need a target pace. If you just walked 3 miles in 54 minutes, you probably want to know what that means. This tool keeps the math out of your head: tell it any two of how far, how long, or how fast, and it gives you the third plus a quick label for the effort level.
What the Four Effort Levels Mean
Most ruckers settle into one of four levels. Easy sits above 20 minutes per mile, the kind of pace where you can hold a conversation. Good for recovery days. Steady runs 17 to 20 minutes per mile and covers most training sessions, sustainable for an hour or more with a moderate pack. Brisk at 14 to 17 minutes per mile is when you're picking up the pace on purpose, useful for building event-day fitness. Fast under 14 minutes per mile is military pace, and it's hard to keep up with a heavy ruck unless you have real cardio fitness underneath it.
How Much the Pack Slows You Down
As a rough rule of thumb, every extra 10% of your body weight in the pack adds about 30 seconds per mile to a sustainable pace. That comes from military load research and what experienced ruckers report, not a precise lab number. Add your ruck weight in the optional field to see what the same effort would feel like without the pack. It's useful when you're trying to decide if a planned pace is realistic for the load you're carrying.
Mile-by-Mile Times for GORUCK Events
If you're training for a GORUCK Light, Tough, or Heavy, splits matter. Events have rolling pace cutoffs, typically 15 minutes per mile for Light and Tough and 20 minutes per mile for Heavy. Use the splits panel to see when you'd need to hit each mile marker. If you keep falling behind, the issue is either pace, load, or fitness, and the calculator at least narrows it down.
What This Calculator Won't Do
It doesn't calculate calorie burn. For that, use the Calorie Calculator, which runs the Pandolf load-carriage equation. It doesn't recommend a starting weight either. The Ruck Weight Calculator does that. And it can't account for hills, trail surface, or pack fit, all of which can shift your real pace by several seconds per mile.