Go, Speedracer, Go!
If you don't own the Nike Sport Kit and would rather not break out your handy calculator to figure out how fast you're running, visit this Arkansasrunner.com . Caloriecontrol.org provides some easy calculators to estimate the amount of calories you burned. Ironmate.co.uk gives a good breakdown of calorie expenditure for the different triathlon components performed at different speeds. It also notes that the calories used "are based on economical efficient movements" and "calories estimates are [only] approximate. Please keep this fact in mind whenever you use calorie calculators/estimators.
The same holds true for the devises you use to keep track of your exercise, such as pedometers, treadmills, heart rate monitors, or the Nike Sport Kit. While my clients know that I'm not one to recommend unnecessary gear , I actually like the Sport Kit. While it isn't all that accurate when running steep hills (a definite minus in San Francisco), it does provide some good motivational tools: Nike website records your progress, speed, and accomplishments as well as plan virtual races with your friends. If that gets you moving, it's worth the $30.
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