Enter a pace to get your finish time, or enter a goal time to get the pace you need. Works in min/mile and min/km, with splits from the 5K to the marathon.
Distance
Goal finish times
Marathon finish time
3:55:58
Finish times at this pace
Splits (elapsed time)
5 mi
45:00
10 mi
1:30:00
15 mi
2:15:00
20 mi
3:00:00
25 mi
3:45:00
Marathon finish
3:55:58
Pace (min/mi)
Common paces
Finish time
Type a goal time and the pace above updates to match.
PACING TIP
Many runners start a few seconds per mile slower than goal pace and hold steady or speed up late. Compare your first few splits to the table so you notice if you are running ahead of plan.
How pace, distance, and finish time relate
Running pace is the time it takes to cover one mile or one kilometer, written in minutes and seconds (for example, 9:00 per mile). Finish time is the total time for a set distance such as a 5K, 10K, half marathon (13.1 miles), or marathon (26.2 miles). One formula links them: pace × distance = finish time.
This calculator works in both directions. Type a pace to see your projected finish time, or type a goal finish time to see the average pace you need to hold. Choose miles or kilometers; the other unit, plus mph and km/h, appears next to the result.
It also lists your finish times for other common distances at the same pace, and a splits table with the elapsed time at each mile or kilometer mark, ready to copy into a race plan.
Race goals, training runs, and treadmill settings
Find the pace for a goal time
Pick the marathon, half marathon, 10K, or 5K and tap a goal time, or type your own. You get the average pace per mile or km you need to hold the whole way.
See what a training pace means over race distance
Enter the pace from your tempo run or long run to see projected finish times for 1 mile, 5K, 10K, half marathon, and marathon at that pace.
Build a race-day pace sheet
The splits table shows your elapsed time at each mile or km mark. Copy it to your notes or write it on a pace band.
Set a treadmill speed
Your pace is shown as mph and km/h, so you can match an outdoor pace to the speed setting on a treadmill.
How to find your pace or finish time in 4 steps
- Choose a distance (1 mile, 5K, 10K, half marathon, marathon, or custom) and switch between Miles and Kilometers.
- Enter your pace in minutes and seconds, or use the + and − buttons to change it by 5 seconds. To work backward, tap a goal time or type a finish time in hours, minutes, and seconds.
- Read your finish time, your pace in both units, and your speed in mph and km/h.
- Check the splits table and the times at other distances, then copy the results.
Note: Results update as you type. The pace and times you enter are not sent to a server.
What the numbers assume
- Results assume a constant pace for the whole distance. Hills, heat, wind, aid stations, and slowing late in a race are not included.
- Splits are elapsed running time from the start line. Time spent reaching the start line (gun time vs. chip time) is not included.
- Pace is limited to between 1:30 and 30:00 per km (about 2:25 to 48:17 per mile). Custom distances go up to 500 miles or km.
- Distances used: marathon 26.2 miles (42.195 km), half marathon 13.1 miles (21.0975 km), and 1 mile = 1.609344 km.
Marathon goal pace chart: 3:00 to 5:00 finish times
Average pace needed to cover 26.2 miles (42.195 km) in the listed time.
| Goal finish time | Often called | Pace per mile | Pace per km |
|---|---|---|---|
| 3:00:00 | Sub-3 | 6:52 /mi | 4:16 /km |
| 3:30:00 | Sub-3:30 | 8:01 /mi | 4:59 /km |
| 4:00:00 | Sub-4 | 9:09 /mi | 5:41 /km |
| 4:30:00 | Sub-4:30 | 10:18 /mi | 6:24 /km |
| 5:00:00 | Sub-5 | 11:27 /mi | 7:07 /km |
Paces are rounded to the nearest second. To finish under a listed time (for example, a sub-4), your average needs to be slightly faster than the pace shown. Enter your own goal in the calculator above for other times.
Pacing strategy: even splits, negative splits, and mile vs. km
A few ideas that help when you turn a goal time into a race plan.
Pace is the number you can check during the race
You only learn your finish time at the line, but you can check your pace at any mile or km marker. Converting a goal time into a pace and splits ahead of time lets you see during the race whether you are ahead of or behind plan.
Even splits vs. negative splits
Even splits means holding the same pace throughout. Negative splits means running the second half faster than the first. Both are easier to follow when you have a target time for each mile or km written down, which is what the splits table gives you.
Min per mile vs. min per km
Pace is usually quoted per mile in the US and per kilometer in most other countries. To convert, divide a pace per mile by 1.609344 to get pace per km, or multiply a pace per km by 1.609344 to get pace per mile. If your watch or app is set to the other unit, the numbers will look very different, so check the setting before race day.
Pace vs. speed on a treadmill
Treadmills usually show speed (mph or km/h) rather than pace. Speed is 3,600 divided by your pace in seconds per mile (for mph) or per km (for km/h). The calculator shows both next to your pace.
Pacing mistakes that cost time late in a race
Starting faster than goal pace
Adrenaline and a crowd of runners can pull you out faster than planned. Time gained early can be lost later if your pace drops sharply.
💡 See the solution▼
Not knowing how far goal pace is from your training pace
If your usual runs are much slower than the pace your goal needs, race day can feel harder than expected.
💡 See the solution▼
Mixing up per-mile and per-km paces
A watch or app set to the other unit can make a pace look much faster or slower than you think it is.
💡 See the solution▼
Relying on feel instead of splits
Feeling good does not tell you whether you are on pace, and you may only notice at the finish.
💡 See the solution▼
Pace, finish time, and splits: common questions
Q.How do I calculate running pace from my finish time?
A. Divide your finish time by the distance. A 4:00:00 marathon is 14,400 seconds over 26.2188 miles, which averages about 9:09 per mile (5:41 per km). In this calculator, pick a distance and type your goal time into the finish time boxes; the pace updates automatically.
Q.What pace do I need for a sub-4 marathon?
A. A sub-4 marathon means finishing in under 4:00:00. A steady 9:09 per mile (5:41 per km) works out to about 3:59:54, so you need to average 9:09 per mile or faster. Select Marathon, then the 4:00:00 goal button, to see the pace and splits.
Q.How do I convert min/mile to min/km?
A. One mile is 1.609344 km, so divide a pace per mile by 1.609344 to get the pace per kilometer. For example, 9:00 per mile (540 seconds) is about 5:36 per km. The calculator shows both units at once, and the Miles / Kilometers switch sets which one you edit.
Q.How do I convert running pace to mph or km/h?
A. Divide 3,600 by your pace in seconds per mile for mph, or by your pace in seconds per km for km/h. A 9:00 per mile pace is 540 seconds, so 3,600 ÷ 540 = 6.67 mph. Both mph and km/h are shown with your result, which helps when you set a treadmill.
Q.What are splits, and how are they calculated here?
A. A split is your elapsed time at a point in the race. The calculator multiplies your pace by the distance covered at each mark, assuming a constant pace. Marks fall at every mile (or km) for distances up to 10 in the selected unit, and every 5 for longer distances.
Q.Can I calculate a distance other than 5K, 10K, half, or full marathon?
A. Yes. Choose Custom and enter any distance up to 500 in the selected unit, such as 15K, 8 miles, or a 50K. The finish time and splits update for that distance.
Q.Does the calculator account for hills, aid stations, or slowing down late in a race?
A. No. It assumes you hold the same pace from start to finish, so treat the results as a plan or a target. Real races vary with terrain, weather, crowding, and fatigue.
Q.Is the pace and time data I enter sent anywhere?
A. No. The calculations run in your browser, and the pace and times you enter are not sent to our servers.
Your feedback
makes this tool better.
Tell us which features you'd like, what should be fixed, or which new tool you'd like to see. An engineer reads every submission and uses it to guide development.