Practical running guide · Finish Line Labs
What is a negative split?
A negative split means completing the second half of a race faster than the first half. It may result from a cautious opening, better pacing or a purposeful late acceleration.
A simple example
For a 50:00 10K with a 60-second negative split, aim for 25:30 over the first 5K and 24:30 over the second. That averages 5:06/km first, then 4:54/km.
Keep it practical
A negative split is a pacing option, not a guaranteed best strategy for every runner or course. Terrain, weather and current fitness should help determine whether a progressive race is realistic.
Try it with your own numbers
Use the relevant calculator to turn these concepts into a pace, split or workout estimate.
Keep in mind
These examples illustrate calculations and general training ideas. Your ideal pace depends on fitness, recovery, health, terrain and conditions. Treat predictions as estimates rather than promises.