2024 RunBlogRun Spring Training Program, Week 1, Day 4, We call it Fartlek!

This is Thursday, March 14, 2024. This is Fartlek Day. Gosta Holmer, an Olympian from Sweden who competed against Jim Thorpe, invented this interval program for running on trails and in parks. Mr. Holmer developed it for the Swedish cross-country team in the 1930s, which did poorly in European competitions, and Gosta wanted to motivate […]