ÖTILLÖ Casco Bay USA
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Event Overview
The ÖTILLÖ Casco Bay USA is a swimrun event held in the Casco Bay Islands off the coast of Portland, Maine. It is described as the birthplace of America's first official swimrun. The course features island hopping with ocean swims, changing tides, rock scrambles, and historic sites. Three race distances are offered: the Casco Bay Experience, the Casco Bay Sprint, and the Casco Bay World Series.
Race Distances
- Casco Bay Experience: Total distance 9,705 m (Swim: 1,635 m, Run: 8,070 m, Elevation: 45 m)
- Casco Bay Sprint: Total distance 16,930 m (Swim: 3,230 m, Run: 13,700 m, Elevation: 107 m)
- Casco Bay World Series: Total distance 35,165 m (Swim: 7,940 m, Run: 27,225 m, Elevation: 262 m)
Event Logistics
The event date is August 9, 2026. The nearest airport is Portland International Jetport (PWM). On race day, transport to the start lines for athletes and volunteers is provided via Casco Bay Lines ferries. The finish line and post-race area is at the Peaks Island Lion’s Club. Packet pickup is scheduled for the day before the race at the Holiday Inn Portland-by the Bay.
Rules and Requirements
The event features team (all male, all female, mixed) and solo categories. All participants must wear shoes and a wetsuit for the entire race. Mandatory gear also includes a whistle and, for teams, a tether and compression bandage. Solo racers are provided with an auto-inflating personal flotation device. Awards are given to the top three in each category for the World Series and Sprint distances, but not for the Experience distance. Visit the organization's website for the most recent information.
