Mad City Ultras

Mad City Ultras

Since 2007 this race has encompassed a beloved local loop known as the Arb Loop. This is a 10K loop that includes the beautiful landscape of the UW- Madison Arboretum. Once again MadCity will host the 100K solo, 50K Solo, along with the 100K Relay, and 50K Relay.

2026 will be the home of the 100K National Championships.

Website & Registration