This running distance calculator uses your time and average pace to calculate how far you ran or how far you could go. Enter those two values to see your distance in miles and kilometers, a split table, and finish times for common race distances at that pace.
For example, 30 minutes at 6:00 per kilometer gives you 5 km. The calculator uses the time and pace you enter; it does not measure a route on a map.
Using the running distance calculator
- Keep the Distance tab selected. Enter your time in the separate hours, minutes, and seconds fields. For 30:00, enter 0 hours, 30 minutes, and 0 seconds.
- Choose per mile or per kilometer, then enter your average pace in minutes and seconds. Replace the sample time and pace with your own values.
- The results update as you type, showing your distance in miles and kilometers. You don't need to enter a distance.
- Set the split interval, the distance each row covers, and choose its unit, such as 1 mile or 1 kilometer. Leave negative splits turned off for even pacing.
- Choose Download, then CSV or Excel, to save your results and splits as a CSV or Excel-compatible file.
Time, pace, and the split interval each need to be greater than zero. The table can show a maximum of 200 segments. If you see the limit message, increase the interval so the table can include the whole distance.
Find distance from time and pace
Distance = total time ÷ average pace. Use the same time units throughout. For miles, divide your total minutes by your pace in minutes per mile. For kilometers, divide your total minutes by your pace in minutes per kilometer.
A 45-minute run at 9:00 per mile covers 5 miles, or about 8.047 km. A 30-minute run at 6:00 per kilometer covers 5 km, or about 3.107 miles. These are calculated examples, not suggested training targets. The conversion uses NIST’s international mile of 1,609.344 meters.
Pace is shown in minutes and seconds. An 8:30 pace is 8.5 minutes, not 8.30 minutes. To avoid that mix-up when calculating distance by hand, convert both inputs to seconds: 30 minutes is 1,800 seconds, and 8:30 per mile is 510 seconds per mile. Dividing 1,800 by 510 gives about 3.529 miles.
Check that your time and average pace cover the same period. With a 30-minute moving time at 6:00 per kilometer, for example, you get 5 km. If you include 5 minutes of stopped time but keep that moving pace, the calculation would incorrectly show about 5.833 km. Use your average pace for the whole run, not the pace shown at a single moment.
Frequently asked questions
How do I find distance with the running distance calculator?
Keep the Distance tab selected. Enter your time in hours, minutes, and seconds, then enter your average pace per mile or kilometer. For instance, 30:00 at 6:00 per kilometer works out to 5 km. The result updates automatically; you don't need to enter a distance.
Can I measure a route on a map with this calculator?
No. It calculates distance from the time and pace you enter. It can't trace your route or recover a missing GPS track. If you estimate your pace, the distance is an estimate too.
Which calculator should I use for pace or finish time?
To find pace from distance and time, use the pace calculator. The finish time calculator uses distance and pace to calculate time. This Distance tab finds distance using your time and pace.
Should I use minutes per mile or minutes per kilometer?
Select the unit used for your average pace. 6:00 per kilometer and 6:00 per mile are different paces. Changing the pace unit converts the entered pace and changes the distance unit too. Pace rounds to whole seconds, so distance may shift slightly after a unit change. The split interval has its own unit setting.
Should my time include walking breaks or stops?
Match your time to your average pace. If the pace includes walking and stops, enter the full elapsed time from start to finish. If it is based on moving time only, enter that moving time. Combining elapsed time with a moving-time pace overstates distance.
What does the negative splits slider mean?
Turn on Negative splits to model a slower start and progressively faster later segments. Total time and distance stay the same. The percentage controls the size of the pace change across the segments. It doesn't describe the percentage improvement from one segment to the next or the difference between the two halves. Leave it off for even pacing.
Why are splits missing or shorter at the end?
Time, pace, and the split interval all need to be greater than zero. If the limit message appears, choose a longer interval; the table supports up to 200 segments. A shorter final segment covers the remaining distance. Displayed segment times add up to the displayed total time.
Does the race table predict what I can run?
No. It shows the finish time for each race distance if you maintain the pace you entered. It doesn't assess how long you can sustain that pace or choose a suitable training pace.
Why does the result differ from my watch or treadmill?
Make sure you're comparing the same time and average pace, with matching units and the same treatment of stops. This calculation cannot correct a device’s distance estimate. Buildings and trees can affect GPS accuracy, as GPS.gov explains. Indoors, some watches estimate distance from movement; the Garmin manual explains how its devices do this.
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.
