ARKTOS
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Event Overview
ARKTOS is an ultra running event held annually in late February in Dousman, Wisconsin. It takes place in the Southern Kettle Moraine Forest. The event bills itself as the original winter ultra offering time-based formats in this region.
Event Format
The event features fixed-time ultra runs, where participants complete as many loops as possible within a chosen time limit. The available options are:
- 6 Hour - Solo or Team
- 12 Hour - Solo or Team
- 20 Hour - Solo or Team
Teams can consist of up to four members in a relay format.
Logistics and Registration
The event has a total participant cap of 160 runners. Registration for some events closes on February 23, 2026, while the 12-hour team option closes on February 25, 2026. Visit the organization's website for the most recent information.
