Osaka Marathon

Location: Osaka
Country: Japan
Website: https://www.osaka-marathon.com/2025/en
2025 Marathon Date: 24/02/2025
2026 Marathon Date: 22/02/2026
Winning Time 2025: 2:05:35
% Sub-3s: 2–5%
# Sub-3s: 1000–1999
Total Runners: 30k–40k

The Osaka Marathon is held each February in Osaka, Japan’s third-largest city and one of its major sporting hubs. With over 30,000 finishers and a route that combines city landmarks, flat roads and mass participation energy, the Osaka Marathon has become a highlight of the Japanese racing calendar. It appeals to both domestic club runners and international participants looking to experience Japan’s distinctive race culture.

The course starts at Osaka Castle Park and follows a loop through the heart of the city, passing iconic sites such as Osaka Dome and the city’s harbour areas. The terrain is flat, with only a few modest ramps and underpasses interrupting the otherwise fast layout. Road surfaces are excellent throughout, and the wide streets accommodate the race’s large field with surprising efficiency.

Weather conditions in late February are generally cool and stable. Race-day temperatures typically range from 5–10°C, with low humidity and little wind. Rain is uncommon, and the conditions are widely regarded as near-perfect for marathon running. The combination of climate, infrastructure and crowd support helps sustain effort across the race.

Organisation is professional and detailed, with wave starts, frequent aid stations, medical teams, and signage in both Japanese and English. The event has a reputation for precision and logistical clarity, including efficient baggage drop, well-controlled entry zones and clear pacing signage.

Spectator turnout is impressive, with loud and supportive crowds lining much of the route. Cultural performances, banners and cheering groups contribute to a festive atmosphere, especially in the final 10 kilometres. The finish area in Osaka Castle Park is expansive and efficiently managed.

The Osaka Marathon is a strong option for sub-3 runners looking to combine a fast course with international flair and large-scale energy. While language differences and long-haul travel may add complexity for overseas runners, the on-the-ground experience is smooth and rewarding. For those targeting a winter personal best in a major city with flat roads, cool weather and deep pacing groups, the Osaka Marathon delivers.