Teton Dam confirms June 5, 2027; check the new course before using the anniversary route
The race commemorates the June 1976 dam failure, but that historical connection does not mean every edition starts at the dam. The city’s 2026 anniversary notice listed a 06:30 marathon start there. Treat that as previous-edition context until the 2027 guide confirms the actual start and transport plan.
The municipal web page’s office address is a contact location, not proof of where runners should assemble. Check the race map, collection venue and start access separately. If the next course again has different start and finish locations, arrange the official transport or a permitted ride before race morning.
The page links to 2027 registration, while one FAQ link still opens the closed 2026 entry. Check the year in the registration flow before relying on a fee, deadline or race-day schedule. A stale linked form should not override the city’s explicit June 5, 2027 announcement.
Review the full-marathon course and elevation profile once issued, including any construction changes. Prepare for that route rather than borrowing the 5K description or a relay leg’s profile. Confirm the cutoff, intermediate controls and aid spacing before choosing a target, and practice with familiar supplies. Relay participants need their own handover and transport plan; those instructions do not grant support access to an individual marathon runner. Companions should agree on a finish meeting point and check road closures when moving between viewing locations. Before departure, recheck collection hours, baggage arrangements and start transport using the new participant communication. The exact 2027 race day is confirmed, but the older dam-site start and the municipal contact address must remain clearly distinguished from a finalized 2027 operating plan.
Confirmed race date
Teton Dam Marathon and Races: June 5, 2027. Verified on October 14, 2026 against the official event information.
Last-known race profile
These details identify the race page; they do not establish the next edition's operations. The previous race date does not establish the next edition. Use the confirmed date above and recheck the final participant instructions before committing to a race-day schedule.