Half Marathon Pace Calculator

Pacing is one of the most critical elements for a successful half marathon. Go out too fast, and you risk burning out before the finish line. Go too slow, and you might not reach your goal time. This Half Marathon Pace Calculator from Calculator Site is designed to help you find the perfect balance.

By inputting your desired finish time, you can instantly see the exact pace you'll need to maintain per kilometre and per mile. Alternatively, if you have a comfortable pace from your training runs, you can input that to see your predicted finish time. This is invaluable for setting realistic race day goals and for structuring your training sessions. For converting between paces, you can use our Pace Converter.

Once you've identified your target pace, your training should incorporate runs at that speed. A typical training week might include:

• One long, slow run: Build endurance at a pace significantly slower than your target race pace.
• One tempo run: A sustained effort at or near your target half marathon pace for a set duration (e.g., 20-40 minutes).
• One interval session: Short, fast bursts of running (e.g., 400m or 800m repeats) faster than race pace, with recovery jogs in between.
• Easy/recovery runs: Two or three shorter, very slow runs to help your body recover.

Remember to factor in your effort and how many calories you might be burning, which you can estimate with our Calories Burned Calculator.