ÖTILLÖ Casco Bay USA
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Event overview
The ÖTILLÖ Casco Bay Swimrun is scheduled for 9 August 2026 in Casco Bay, off Portland, Maine. The event combines open ocean swims and trail or shoreline running across multiple islands, and includes island hops, rock scrambles, and visits to historic sites. Athletes and volunteers are transported to start islands by Casco Bay Lines ferries; tickets for athletes and volunteers are included. Spectators must arrange their own transport. After the event, a return ferry to the mainland is provided free on a first-come, first-served basis.
Race distances
- Experience: Total 9,705 m; Swim 1,635 m; Run 8,070 m; Elevation 45 m
- Sprint: Total 16,930 m; Swim 3,230 m; Run 13,700 m; Elevation 107 m
- World Series: Total 35,165 m; Swim 7,940 m; Run 27,225 m; Elevation 262 m
Location and logistics
The race uses islands in Casco Bay such as Great Diamond, Long, Little Diamond, Peak, and Chebeague. The nearest airport is Portland International Jetport (PWM). Packet pickup is held the day before at the Holiday Inn Portland-by-the-Bay, with an option for race-morning pickup as an add-on. Bag drop is available before boarding ferries and will be transferred to the finish area. Permanent restrooms are on course; portable toilets are not provided.
Rules, safety and mandatory gear
There are course cut-offs at exiting Long Island, Little Diamond, and Peak Island. Mandatory race-provided items include a color-coded swim cap, bib, timing chip, and Restube for solo racers. Mandatory athlete-provided items include shoes worn for the entire race, a wetsuit, a whistle, a compression bandage, and a tether. Teams must stay together and follow the marked course. Visit the organization's website for the most recent information.
