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Enter your distance and average running pace to calculate how long your run will take. Choose miles or kilometers to see your finish time, a split plan, and times for other race distances at the same pace.
The result assumes you hold the pace you entered over the entire distance. It doesn't predict your race performance or choose a training pace for you.
Using the finish time calculator
- Leave the Time tab selected. Choose miles or kilometers, then select a race preset or type your distance. Presets include 5K, 10K, half marathon, marathon, 10 miles, and 50K.
- Replace the sample pace with your own, using the minutes and seconds fields. For a pace of 9:30 per mile, enter 9 in the minutes field and 30 in the seconds field.
- Read your calculated finish time. Results update whenever you change the distance or pace. You don't need to enter a finish time.
- Choose a split interval, such as 1 mile or 1 kilometer. Leave negative splits off for even pacing. Turn them on to model a slower start and faster later splits while keeping the same total time.
- To save your plan, download the result and split table as CSV or an Excel-compatible file.
In the split table, split time is the time for each segment. Cumulative is the total time from the start through the end of that segment.
Distance, pace, and split interval must all be greater than zero. The split table shows at most 200 segments. If you see the limit message, increase the split interval so the table can display the whole distance.
How finish time is calculated
Finish time = distance × average pace. For a hand calculation, use matching distance and pace units. Running 10 miles at 9:30 per mile takes 95 minutes, or 1:35:00. At 6:00 per kilometer, a 5K takes 30:00 and a 10K takes 1:00:00.
Enter pace in minutes and seconds, not decimal minutes. In decimal form, a 9:30 pace is 9.5 minutes per mile, not 9.30. For a hand calculation, start by converting the pace to seconds: 9 × 60 + 30 = 570 seconds per mile. Multiply that by 10 miles to get 5,700 seconds, then convert the total to hours, minutes, and seconds.
Race presets use the full distance so you don't have to type it in. For example, the marathon preset uses World Athletics’ 42.195 km distance. At 6:00 per kilometer, that takes 4:13:10 when rounded to the nearest second.
If your pace excludes stopped time, add planned stops to the result. For example, a 50-minute run with 2 minutes of stops takes 52 minutes in total. If your average pace already includes stops, don't add that time again.
Frequently asked questions
How do I use this finish time calculator?
Select the Time tab to calculate your finish time. Choose your distance and enter your pace in minutes and seconds per mile or kilometer. The calculated time updates automatically. At 9:30 per mile, for example, covering 10 miles takes 1:35:00.
Can I calculate my pace from a recent race result?
Yes. Enter your distance and finish time in the pace calculator. This page calculates time from distance and pace. To find distance from time and pace, use the distance calculator.
How should I format time and pace?
Enter your pace in the separate minutes and seconds fields. For 8:45 per mile, enter 8 minutes and 45 seconds. Results use minutes:seconds for times under an hour and hours:minutes:seconds for times of an hour or more. The time 1:35:00 is 1 hour and 35 minutes. You don't need to enter a finish time on this page.
Should I choose miles or kilometers?
Choose the unit used by your pace or race plan before entering your values. Changing the distance or pace unit changes both units and converts your entries. Pace rounds to whole seconds, so the calculated time may shift slightly after conversion. The split interval has its own unit setting.
Why are my splits missing or shorter at the end?
Check that distance, pace, and split interval are each greater than zero. The table shows a maximum of 200 segments; choose a longer interval if you see the limit message. A shorter final segment takes less time because it covers less distance. The displayed split times add up to the displayed finish time.
What does the negative splits slider do?
It models a slower start and progressively faster later segments while keeping the same total time. The percentage controls how much the pace varies between segments; it does not mean your second half will be that percentage faster. Leave negative splits off to see even pacing. This is a planning option, not a recommendation for every race.
Does the calculator predict my race performance?
No. It shows how long a distance would take at the pace you enter. The popular-race table uses that same pace for every distance, without assessing whether you can sustain it. For planning, enter a pace you expect you can hold for your chosen distance. Add planned stops only if your pace excludes stopped time.
Why does the result differ from my watch or treadmill?
Check that you're comparing the same distance and including the same stops. A watch's current pace and its average pace for the whole run are different values. Buildings and trees can interfere with GPS, as GPS.gov explains. Indoors, some watches estimate distance from movement; the Garmin manual describes this for its devices.
I completed my first 10K on a dare. In a year, I ran a half-marathon. Another year later, I finished a marathon race. Today I run 4 marathons a year and a half-marathon every week. I learned everything about running the hard way. So, I help runners achieve better results easier.
