Race listing
Pulling race details. Checking the course notes.
Pulling race details. Checking the course notes.

Challenge registration for the Ohio River Road Runners Club's 200K and 300K Grand Slam events, held May 16–November 2026 in the Dayton area. Participants must finish as official finishers in four 50K races for the 200K or six 50K races for the 300K within cutoff times. Separate registration required for each individual race.
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