Running Pace / Time / Distance Calculator
Give any two inputs (distance, time, pace) to compute the third—then explore the pace converter, finish-time estimator, and multipoint pace analysis.
Your run
hh:mm:ss or mm:ss for time and pace.Results
Times for common race distances
| Distance | Time |
|---|---|
| 1K | 8:00 |
| 3K | 24:00 |
| 5K | 40:00 |
| 10K | 1:20:00 |
| Half Marathon | 2:48:47 |
| Marathon | 5:37:34 |
| 400 m | 3:12 |
| 800 m | 6:24 |
Splits
Show per-km splits
| Split | Distance (km) | Cumulative time |
|---|---|---|
| 1 | 1.00 | 8:00 |
| 2 | 2.00 | 16:00 |
| 3 | 3.00 | 24:00 |
| 4 | 4.00 | 32:00 |
| 5 | 5.00 | 40:00 |
Pace Converter
Finish Time Estimator
Multipoint Pace (segments)
| # | Distance | Unit | Time (hh:mm:ss) |
|---|---|---|---|
| 1 | |||
| 2 | |||
| 3 | |||
| 4 | |||
| 5 | |||
| 6 | |||
| 7 | |||
| 8 | |||
| 9 | |||
| 10 | |||
| 11 | |||
| 12 |
Results interpretation
- Pace is your time per mile or kilometer. Lower is faster.
- Even splits indicate consistent effort; positive splits mean you slowed down.
- Who it’s for: runners planning workouts, race timing, or unit conversions.
How this calculator works
Formulas, steps & assumptions
We use the identity time = distance × pace, where pace is seconds per unit (mi or km). Give any two and we solve for the third. Converters apply unit factors (1 mi = 1.609344 km).
- Pace = time ÷ distance
- Time = distance × pace
- Distance = time ÷ pace
- Average pace (multipoint) = total time ÷ total distance in your preferred unit.
Assumptions: constant pace within segments; no terrain, wind, or stoppage adjustments. Times are planning estimates.
Running Pace Calculator: Convert Time, Distance, and Pace for Smarter Training & Race Plans
Our running pace calculator turns three related variables—distance, time, and pace—into a simple planning tool. Enter any two and it computes the third, then produces per-mile or per-kilometer splits you can use to structure workouts or race strategies. Whether you’re setting a marathon goal time, converting between miles and kilometers, or checking what a new interval pace means for your overall time, this calculator keeps the math out of the way so you can focus on training.
Why pace matters
Pace is the language of running. Training plans are typically written in minutes per mile or kilometer because it maps directly to effort and session intent. When you know your target pace, you can create workouts that are specific, repeatable, and aligned with your goals—like tempo runs at your threshold pace or intervals a bit faster with full recoveries.
Using splits to guide effort
Consistent splits are a hallmark of smart pacing. Even pacing minimizes late-race fade and makes it easier to evaluate fitness. If you routinely slow down, your early effort is likely too hot; if you can negative split comfortably, you might be ready to set a faster target. Splits also help with logistics—knowing when you should hit each mile or kilometer marker keeps you honest on race day.
Converting units without guesswork
Many runners train in mixed units—track intervals in meters, long runs in miles, and international races in kilometers. The calculator converts seamlessly between min/mi and min/km, so your targets stay consistent regardless of the venue.
Make the numbers work for you
- Calibrate easy, tempo, and interval paces to your current fitness.
- Preview race day timing with realistic splits and a margin for crowds or hills.
- Translate treadmill speeds and outdoor paces by converting units precisely.
The best training is consistent training. With clear targets derived from a reliable pace calculator, you’ll hit the right effort more often, recover better, and progress faster over time.
Use cases & examples
Example 1: 5 km in 26:30 → pace ≈ 5:18 /km. Convert to per-mile: 8:32 /mi.
Example 2: Pace 8:00 per mile for 10 km → time ≈ 49:43.
Example 3: 45 minutes at 5:15 per km → distance ≈ 8.57 km.