1. What is the Running Equivalent Calculator?

The Running Equivalent Calculator estimates how a running performance at one distance would translate to another distance. It uses a well-established formula to predict equivalent race times based on the principle that running speed changes predictably with distance.

2. How Does the Calculator Work?

The calculator uses the running equivalent formula:

Where:

• \( time \) — Original running time in minutes
• \( dist\_old \) — Original distance in kilometers
• \( dist\_new \) — New distance in kilometers
• 1.06 — The exponent that accounts for the non-linear relationship between distance and time

Explanation: The formula accounts for the fact that runners slow down slightly as distance increases, following a predictable pattern.

3. Importance of Equivalent Time

Details: Equivalent times help runners compare performances across different distances, set realistic goals for new distances, and track progress in their training.

4. Using the Calculator

Tips: Enter your original time in minutes, original distance in kilometers, and the new distance you want to compare to. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this calculator?
A: The formula provides a good estimate for most runners, but individual variations in endurance and speed may affect actual performance.

Q2: Does this work for all distances?
A: It works best for standard race distances between 5km and marathon (42.2km). Extremely short or long distances may be less accurate.

Q3: Why the exponent of 1.06?
A: Research shows that running speed decreases by approximately this factor as distance increases, accounting for fatigue.

Q4: Can I use this for training paces?
A: Yes, it can help estimate appropriate training paces for different workout distances.

Q5: Does terrain affect the calculation?
A: The formula assumes similar terrain conditions. Significant elevation changes or trail running would require adjustments.