How It Works The running calculator uses the distance and finish time of your most recent race to approximate your current level of fitness. Your fitness level is then converted to an equivalent 10K time, for easy comparison with other race results at different distances. The conversion is based on equivalent fitness, not equivalent pace. The same level of fitness corresponds to successively slower average paces as the race distance increases. For example, a 24:05 5K (7:45/mile) corresponds to the same level of fitness as a 49:58 10K (8:02/mile). Once your current fitness level has been determined, it can be used to predict your race times at other distances. The closer the other distance is to the original race's distance, the more accurate the prediction will be. Due to differences in physiology and training, some people may be better at longer distance races than shorter ones or vice-versa, but the calculator should yield accurate results for most runners. The recommended training paces are also determined from your current fitness level.

Running Calculator Enter the distance and finish time of your most recent race Distance: mi km Time (hh:mm:ss): Calculate predicted finish times at other common race distances Calculate appropriate training paces Calculate race pace from distance and time Convert race distance to miles or kilometers Calculate equivalent finish times at other altitudes for this race at ft m Calculate equivalent finish times at other temperatures for this race at F C Calculate equivalent finish times at other course elevation profiles,

from this race with ft m of total uphills and ft m of total downhills

(optional: including a course with ft m of uphills and ft m of downhills) Or enter a pace to convert Pace (mm:ss): min/mile min/km Convert pace to min/mile min/km mph kph Calculate equivalent paces at other inclines for the given pace from the outdoors - level ground treadmill - 0.0% incline treadmill - 0.5% incline treadmill - 1.0% incline treadmill - 1.5% incline treadmill - 2.0% incline treadmill - 2.5% incline treadmill - 3.0% incline treadmill - 3.5% incline treadmill - 4.0% incline treadmill - 4.5% incline treadmill - 5.0% incline treadmill - 5.5% incline treadmill - 6.0% incline treadmill - 6.5% incline treadmill - 7.0% incline treadmill - 7.5% incline treadmill - 8.0% incline treadmill - 8.5% incline treadmill - 9.0% incline treadmill - 9.5% incline treadmill - 10.0% incline Calculate equivalent paces at other windspeeds for the given pace with a mph kph m/s headwind tailwind