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Pacing Calculator
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Make your own marathon pace chart
Generate a pacing chart in per mile or per kilometer increments.
Enter your race distance (5K,10K, half-marathon or marathon), your goal finishing time,
and the increments (every mile, every 5 miles ,every km) that you wish to display.
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Age-graded performance Calculator
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Calculate your age-graded performance.
Predict the equivalent open (30 years or younger) time for a particular distance, as well as the percentile score.
The program covers men and women, age 40-70 for the 5K,10K, half-marathon and marathon distances.
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Race Time Prediction
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Estimate how long it will take to run a specified distance, based on a previous race result.
Both metric and non-metric calculators are available.
This type of predictive analysis is more accurate when the two distances are relatively similar (e.g 5K and 10K).
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Interval Pace Calculator
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Estimate your optimal interval training pace, based on your current 5K race time.
AT(anaerobic threshold) and VO2-Max pace is calculated.
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Heart-rate zone Calculator
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Estimate your heart-rate zones for easy running, anaerobic threshold (AT) and VO2 Max workouts.
The training zone values are calculated using the Karvonen formula:
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Calorie Calculator
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Estimate the amount of calories you burn at a given running pace.
The calculation is based on a formula derived from a study of the net
energy expenditure for running 1 hour on a horizontal surface.
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