Fartlek 5K

Thornton, CO

Fartlek 5K


Okay I am sure you just snickered a bit, and truthfully we do to, but before you think this is all a word made up on the school grounds by some hyperactive kids, let me introduce you to what Fartlek actually means.

From our friend at Runner’s World Magazine: Fartlek is Swedish for "speed play," and that is exactly what it’s all about. Unlike tempo and interval work, fartlek is unstructured and alternates moderate-to-hard efforts with easy throughout. After a warm up, you play with speed by running at faster efforts for short periods of time (to that tree, to the sign) followed by easy-effort running to recover.

The Fartlek 5K brings the “play like” attributes of this long and well known running jargon/training term into a fun family oriented 5K. The event will feature a 5K Run/Walk and a Fartlek zone (where we will capture the fastest speed play participants) and a fun post-event expo.


  • Poly blend "Just Fartleked It" tech shirt

  • Custom Finishers Medal

  • Fartlek Speed Zone on the Course

  • Post Event Festival (fun for ages 1 - 99)

  • Free Photos

  • Free Kids Fun Run


  • Top 3 Males/Females Overall

  • Top Male/Female in Fartlek Zone and $100 each in prize money!

  • Top 3 Males/Females in the following age groups: 12 & Under, 13 - 19, 20 - 29, 30 - 39, 40 - 49, 50 - 59, 60 - 69, 70 - 79, 80 & Over