Home Back

Race Pace Equivalent Calculator (Runners)

Pace Conversion Formula:

\[ P_{new} = P_{ref} \times \left(\frac{D_{ref}}{D_{new}}\right)^k \]

min/mile or min/km
miles or km
miles or km
(default ≈1.06)

Unit Converter ▲

Unit Converter ▼

From: To:

1. What is the Pace Conversion Formula?

The pace conversion formula estimates equivalent race paces for different distances based on your performance at a reference distance. It accounts for the non-linear relationship between distance and running performance.

2. How Does the Calculator Work?

The calculator uses the pace conversion formula:

\[ P_{new} = P_{ref} \times \left(\frac{D_{ref}}{D_{new}}\right)^k \]

Where:

Explanation: The formula accounts for the fact that running speed decreases non-linearly as distance increases.

3. Importance of Pace Conversion

Details: This calculation helps runners estimate realistic pace goals for races of different distances, plan training paces, and assess fitness improvements.

4. Using the Calculator

Tips: Enter your known pace (e.g., 7:30 min/mile) as a decimal (7.5), distances in consistent units (miles or km), and the exponent (default 1.06 works for most runners).

5. Frequently Asked Questions (FAQ)

Q1: What's a typical value for k?
A: The exponent k typically ranges from 1.05 to 1.07, with 1.06 being a good average for most runners.

Q2: How accurate are these predictions?
A: They're estimates - actual performance depends on training specificity, course conditions, and individual physiology.

Q3: Does this work for very short or ultra-long distances?
A: Best for standard race distances (5k to marathon). Less accurate for sprints or ultramarathons.

Q4: Should I use miles or kilometers?
A: Use consistent units for all distances (all miles or all km). Pace units must match distance units.

Q5: How should I interpret the results?
A: Use as a guideline, then adjust based on your specific strengths and recent training.

Race Pace Equivalent Calculator© - All Rights Reserved 2025