Pace Calculator
Projected Race Times
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About Pace Calculator
Understanding Running Pace
Pace is the time it takes to cover a unit of distance, expressed as minutes per mile or minutes per kilometer. It is the inverse of speed and is the preferred metric among runners because it directly tells you how fast you need to move to hit a time goal. A 10-minute mile pace means you cover one mile every 10 minutes, which equals 6 mph. Understanding pace is essential for race planning, training zone management, and avoiding the common mistake of starting too fast and fading in the final miles.
How This Calculator Works
Enter any two of three values (distance, time, pace) and the calculator solves for the third. You can also enter speed and convert to pace, or enter a target race time and see what pace you need to maintain. The calculator supports common race distances (5K, 10K, half marathon, marathon) as well as custom distances in miles or kilometers.
How to Use This Calculator
Select what you want to calculate (pace, time, or distance). Enter the known values. Choose your preferred units (miles or kilometers). The results show pace in both min/mile and min/km, speed in both mph and km/h, and projected times for common race distances based on your pace. This helps you plan race strategy and set realistic goals.
Frequently Asked Questions
What is a good running pace for beginners?
Beginners typically run at 10-13 minutes per mile (6:12-8:04 per km). The most important thing is finding a conversational pace where you can speak in full sentences. Speed improves naturally with consistent training.
How do I convert pace to speed?
Divide 60 by your pace in minutes per mile to get mph. For example, an 8-minute mile equals 60/8 = 7.5 mph. For km/h, divide 60 by your pace in minutes per km.
What pace do I need for a sub-4-hour marathon?
You need to maintain approximately 9:09 per mile (5:41 per km) throughout all 26.2 miles. In practice, aim for slightly faster to account for bathroom stops and pace variation.
