1. What is the McMillan Running Pace Calculator?

The McMillan Running Pace Calculator predicts race times and training paces based on your recent race performance. It uses Greg McMillan's proprietary algorithm to estimate equivalent performances at different distances.

2. How Does the Calculator Work?

The calculator uses the McMillan running formula:

Where:

• \( recent\_race\_time \) — Your time from a recent race
• \( distance \) — The distance of that race

Explanation: The algorithm analyzes your performance at one distance to predict equivalent performances at other distances based on physiological relationships between different race distances.

3. Importance of Pace Prediction

Details: Accurate pace prediction helps runners set appropriate goals, plan race strategies, and determine optimal training paces for different workout types.

4. Using the Calculator

Tips: Enter your most recent race time in HH:MM:SS format, select the race distance and your target distance. Use a recent race (within past 2-3 months) for best accuracy.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is the McMillan calculator?
A: It's quite accurate for most runners, but individual variations in running economy and training background can affect predictions.

Q2: What's the best race distance to use for predictions?
A: Use your most recent race at a standard distance (5K, 10K, half marathon, or marathon) where you gave maximum effort.

Q3: Why do my predicted times seem too fast/slow?
A: The calculator assumes equivalent fitness across distances. If you're better at shorter/longer distances, predictions may need adjustment.

Q4: Can I use treadmill times?
A: Road/track races are best. Treadmill times may not translate directly due to lack of wind resistance and other factors.

Q5: How often should I recalculate?
A: Recalculate after each race or every 4-6 weeks if your fitness is changing significantly.