Bold red and black graphic illustration of a runner sprinting at full speed in a dynamic diagonal composition.

Fartlek Workouts for 5K Runners

The 5K is short, fast, and unforgiving. Fartlek training is one of the best ways to build the speed and stamina it demands. This guide covers six 5K-specific workouts, from beginner lamp post sessions to advanced race simulations, plus pace guidance and a sample week.