Calculators

Runners' Calculators

Target Heart Rate Calculator

Race Pace Calculator

Pace Estimator for Varying Altitudes, Temperatures, and Distances

Estimated Calories Burned at a Specific Pace

Fitness and Health Calculators

BMI-Body Mass Index

Caloric Expenditure Calculator for Exercise
 
Nutritional Needs

Waist to Hip Ratio

Calorie Needs 

Target Heart Rate Calculator

Runners' Resources for route mapping

Map My Run

Log Your Run

Jogger Maps

Race Resources

Half Marathons

Marathons

Runner's World

Health Resources

Mayo Clinic

Active Fitness

Spark People

Livestrong