Running on the Web

Calculators

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Age-adjusted Running Tables
The tables present "age-adjust" running times for runners in the 31-70 year old age groups, both male and female. The tables use factors to adjust your time to a comparable performance by a 30-year old (open class) runner.
Calorie Calculator
Estimates how many calories are you burning in your daily, weekly, or monthly workouts and daily activity.
Rancho Runner
A calculator showing route distances and ascents for any possible route at Rancho San Antonio, Cupertino, California
Split Times for the Portland Marathon
Calculates even effort split times for the Portland Marathon given a finish time. Also will determine splits and finish time based upon a recent race performance.
Target Heart Rate
Calculates target heart rates using various formula.