真夏のリレーマラソン2026 in クラサスドーム大分

The Manatsu no Relay Marathon at Crasus Dome Oita is an indoor summer relay race held in Oita City. Teams compete over either a full marathon distance of 42.195 km or a half marathon distance of 21.0975 km, with both events commencing in the morning. Full marathon teams, comprising 2 to 10 runners, have 5 hours to complete their race, while half marathon teams, with 2 to 5 runners, are allotted 3 hours. The event is designed for high school students and adults in good health who can finish within the allotted time. Divisions include men's, women's, and mixed for both distances. Team entry is limited to 150 or 1,000 runners in total, with registration managed via RUNNET. All participants receive a running shirt upon check-in. Teams have the option to pay an additional fee for custom printing of their team name or a logo on the shirt's front.