Runner's Web
Runner's Web JavaScript Race Time Predictor Calculator
This JavaScript race time predictor calculator allows you to predict your race time for a second distance by entering a time for a given distance and the second distance for which you wish a predicted time.

The JavaScript is based on the formula T2 = T1 x (D2/D1)1.07 where D1 is the race distance for which you have the time T1 and D2 is the second race distance. T2 is the time that the JavaScript will compute.

JavaScript requires a Netscape 2.0 or higher or Microsoft IE 3.0 browser. Check our 'Technical page' link on our home page for information on browsers and links to download the latest version.

Position Calculator in Middle of Screen

Enter the distances in kilometers or meters - both distances must be in the same units, IE 1500M and 10000M or 1.5K and 10K. Enter the time in hours, minutes and seconds.

Race Distance One
in Km
Race Finish Time
Race Distance Two
in Km
Predicted Race Finish Time
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