1. What is the Race Time Predictor?

The Race Time Predictor estimates your potential race time for a target distance based on your performance at a known distance. It uses a mathematical model that accounts for the non-linear relationship between distance and running time.

2. How Does the Calculator Work?

The calculator uses the following equation:

Where:

• \( T1 \) — Known time for distance D1 (minutes)
• \( D1 \) — Known distance (km)
• \( D2 \) — Target distance (km)
• \( T2 \) — Predicted time for distance D2 (minutes)

Explanation: The exponent 1.06 accounts for the fact that running speed decreases slightly as distance increases, making the relationship non-linear.

3. Importance of Race Time Prediction

Details: Accurate race time prediction helps runners set realistic goals, pace themselves properly during races, and track their training progress.

4. Using the Calculator

Tips: Enter your best recent time for a known distance, the distance itself, and your target distance. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this prediction?
A: It works best for predicting times between 5km and marathon distances. Accuracy depends on similar training for both distances.

Q2: Can I use this for different race types?
A: The formula works best for predicting road race times. Trail races or races with significant elevation changes may require adjustments.

Q3: What's the best known distance to use?
A: Use a recent race time for the most accurate prediction. The closer D1 is to D2, the more accurate the prediction will be.

Q4: Does this account for fitness changes?
A: No, it assumes your fitness level is the same between the known race and predicted race. Adjust if you're training harder or recovering.

Q5: Why the 1.06 exponent?
A: Research shows this value best represents how runners' pace changes with distance for most athletes.