1. What is a Pace Chart?

A pace chart helps runners maintain consistent speed throughout a race by showing the required pace per mile or kilometer to achieve a target finish time. For half marathons (13.1 miles or 21.0975 km), this is especially important for proper race strategy.

2. How the Pace Calculator Works

The calculator uses the simple formula:

Where:

• \( P \) — Pace (minutes per mile or kilometer)
• \( T \) — Target time (minutes)
• \( D \) — Distance (miles or kilometers)

Explanation: The equation divides your total target time by the race distance to determine the required pace per unit distance.

3. Importance of Pace Calculation

Details: Proper pacing prevents starting too fast (which leads to burnout) or too slow (missing time goals). A half marathon pace chart helps maintain even effort throughout the race.

4. Using the Calculator

Tips: Enter your target finish time in minutes (e.g., 120 for 2 hours), the race distance (default is 13.1 miles), and select your preferred unit (per mile or per km).

5. Frequently Asked Questions (FAQ)

Q1: What's a good half marathon pace for beginners?
A: Beginner runners typically aim for 10:00-11:00 min/mile (6:12-6:50 min/km) pace, but this varies based on fitness level.

Q2: How does elevation affect pace?
A: Hilly courses require adjusting pace - slower uphill, faster downhill, aiming for even effort rather than strict pace.

Q3: Should I account for water stops?
A: Yes, add 10-30 seconds per stop to your target pace if you plan to walk through aid stations.

Q4: What's negative splitting?
A: Running the second half faster than the first. Many experts recommend pacing 5-10 sec/mile slower than target for first 3 miles.

Q5: How accurate is this for trail races?
A: Trail half marathons often take 10-20% longer due to terrain. Adjust expectations accordingly.