Running pace & race time calculator
Choose what to find: average pace, total time, or distance covered. Use km with min/km or miles with min/mi.
Your run in numbers
Your data is not stored. Everything runs in your browser.
Your result
0:00
Equivalent speed
0 km/h
The result is an estimate from the numbers you enter. Terrain, weather, fatigue, and health change real performance. It does not replace medical advice or a training plan.
What is running pace?
Pace is how long you take to cover each kilometer or mile. A 5:30 min/km pace means five and a half minutes per kilometer. Runners use it to compare workouts, plan races, and see whether they are speeding up or holding back.
Why calculate pace, time, or distance?
If you know race distance and finish time, you get average pace. If you know distance and target pace, you estimate finish time. With time and pace, you see how far you cover. Simple math that gives a clear reference for training.
When to use it
To plan a 5K, half, or marathon, compare watch workouts, estimate race finish, or turn watch pace into total time. Also handy for track or treadmill sessions with concrete numbers.
When it is not enough
Hills, wind, heat, and fatigue change real pace. This tool assumes a steady average over the segment. It does not measure VO₂ max, prescribe training zones, or replace a medical check before you start running.
How to read the result
- In pace mode, the big number is average pace (min/km or min/mi) for the distance and time you entered.
- In time mode, the highlight is total duration for the distance at the pace chosen, with equivalent pace alongside.
- In distance mode, it shows how much ground you cover for the time and pace given, with average speed as context.
Practical tips
- In long races, average pace is usually more useful than short speed spikes.
- If your watch shows min/km but the race is in miles, switch units here before calculating.
- For interval workouts, use the full-session average or calculate each segment separately.
Important limits
Arithmetic estimate assuming steady pace. It does not account for stops, hydration, rough terrain, or individual fitness. If you are unsure about health or training load, talk to a qualified professional.
How we calculate
The three formulas are inverses of each other, always with matching units (km with min/km, or miles with min/mi):
- pace
- Minutes per kilometer or per mile.
- time
- Total run duration in minutes (or hours + minutes + seconds).
- distance
- Length covered in km or miles.
Pace is widely used in road running and sports training material. The math is direct arithmetic with no physiological model.
Frequently asked questions
What is a good running pace?
It depends on age, experience, and distance. Beginners may be around 7 to 10 min/km on easy runs. Experienced runners in short races can be under 5 min/km. Compare with your own history, not a single universal number.
Can I estimate race finish time?
Yes, as a reference. Enter race distance and a pace you can sustain. The time shown is an arithmetic target. On race day, weather and pacing strategy change the outcome.
Can I mix km with min/mi?
Not in this form. Keep the pair: km with min/km, or miles with min/mi. Use the unit toggle to switch everything together.
Does this replace training or medical advice?
No. It is only an educational calculator. Injuries, heart conditions, and starting exercise need professional guidance before you ramp up running.