Pace Calculator
Calculate pace, finish time, or distance for any run.
This tool is for informational and educational purposes only. It is not a substitute for professional financial, medical, legal, or engineering advice. See Terms of Service.
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This calculator solves for pace, distance, or finish time given any two of the three values. Here is how to use each mode:
- Finish Time mode: Enter your target pace in MM:SS per mile (e.g., 9:30) and your distance in miles. The calculator shows your projected finish time. Use the preset menu to quickly fill in common race distances.
- Pace mode: Enter your actual distance and finish time (from a completed run). The calculator tells you your per-mile and per-km pace.
- Distance mode: Enter your pace and the total time you plan to run. The calculator shows how far you will cover.
All modes show results in both imperial (per mile) and metric (per km) pace, plus the distance in both miles and kilometers.
About Pace and Running Performance
Pace is the time it takes to cover one unit of distance. In the United States, pace is typically expressed as minutes per mile. In most other countries and in most scientific literature, pace is expressed as minutes per kilometer. One mile equals 1.60934 km, so a 9:00/mile pace equals approximately 5:36/km.
Understanding your pace helps you race strategically (avoid going out too fast), structure training (tempo runs, easy runs, and intervals each have specific target paces), and track fitness over time. Finish time predictions from a given pace assume even-effort running throughout the race distance, which is the most efficient strategy from a physiological standpoint.
Frequently Asked Questions
What is a good running pace for a beginner?
For beginner runners, a comfortable pace is one where you can hold a conversation without gasping. This typically falls between 10:00 and 14:00 per mile, depending on fitness level. The most important thing for beginners is not pace but consistency: running regularly at a comfortable effort builds the aerobic base that makes faster paces possible later. Most training plans recommend that 80% of runs be at an easy, conversational pace.
What pace do I need to run a sub-2-hour half marathon?
A sub-2-hour half marathon (13.1094 miles) requires a pace faster than 9:09 per mile, or about 5:41 per km. This is a common goal for intermediate runners. To run sub-2 hours consistently, most training plans recommend regular long runs, tempo runs at about 8:30-8:45/mile pace, and at least 25-30 miles per week of total volume in the 8-10 weeks before the race.
How do I convert pace per mile to pace per kilometer?
Divide your per-mile pace in decimal minutes by 1.60934 to get per-km pace. For example, a 9:30/mile pace in decimal minutes is 9.5 minutes. 9.5 / 1.60934 = 5.9 minutes per km, which is 5:54/km. This calculator does this conversion automatically and displays both paces in the results.
What is negative splitting in running?
A negative split means running the second half of a race faster than the first half. It is widely considered the most efficient pacing strategy because it prevents early glycogen depletion and lactic acid buildup. Most world records in distance running are set with even splits or slight negative splits. Starting a race at your goal pace or slightly slower and progressively picking up speed in the final third is more effective than going out fast and fading.