How to use this calculator
Enter the distance you swam and the total time it took. Select whether you swam in yards or meters. The calculator computes your pace per 100 and projects finish times for standard race distances from the 50 through the 1650 (mile) and open water events.
The even split table shows what each 100 should look like if you hold a consistent pace throughout a race. Use this as a pacing guide during interval training or race day. The pace category indicator tells you where your speed falls on a scale from recreational to elite.
For the most accurate results, use a time from a recent all out effort or a well paced time trial. Practice set times tend to be slower due to rest intervals and lower intensity, so they will underestimate your true race pace.
Understanding swim pace
Swimmers measure pace per 100 rather than per mile or per kilometer like runners. This makes it easy to plan sets and predict race times. If you hold 1:30 per 100 yards, a 500 should take about 7:30 at even pace.
Yards and meters are not interchangeable. A short course yards pool is 25 yards, while short course meters is 25 meters and long course meters is 50 meters. More walls per lap means faster times because the push off the wall is the fastest part of each length. That is why yard times are typically about 10% faster than meter times.
Even pacing (holding the same split for each 100) is the most efficient strategy for distances of 200 and longer. Elite swimmers often negative split, meaning they swim the second half slightly faster than the first, by building effort throughout the race.
Frequently asked questions
What is a good swim pace?
For adult fitness swimmers, holding 1:45 to 2:30 per 100 yards freestyle is solid. Competitive masters swimmers typically hold 1:15 to 1:45. Collegiate and national level swimmers are under 1:15, with Olympic caliber swimmers often under 1:00 per 100 meters in distance events.
How do yards and meters compare?
A meter is about 9.4% longer than a yard (1 meter = 1.094 yards). Combined with fewer wall push offs in meter pools, expect meter times to be roughly 10 to 12 percent slower than yard times for the same effort level. A 1:30 per 100 yard pace is roughly equivalent to 1:40 per 100 meters.
How should I pace a 500?
Start at your target pace on the first 100, do not go out fast. Hold steady through the middle three hundreds and push the last 100. If your splits are more than 5 seconds slower by the end, you went out too hard. Practice holding even pace in training with interval sets at your goal pace.
How can I improve my swim speed?
Technique improvements give the biggest returns, especially body position and streamline. Swim with your hips near the surface, keep a long bodyline, and push off each wall in a tight streamline. After technique, consistent interval training (for example, 10 x 100 on a set interval) builds the aerobic base that supports faster pacing.