Half Marathon races near Sagamihara

Sagamihara Training Notes

Sagamihara hosts 50 Half Marathon races in 2026 within 80 km of the city centre — upcoming dates, recurring series, and other races nearby, all in one place.

Runners use Sagamihara Park and the Gion Stadium area when they want steady laps, drills, and honest intervals without leaving town. NR相模 keeps the local club scene simple, with sessions around Gion Stadium and Sagamihara Park every Wednesday and Saturday from 9:30 AM to noon. The club makes running feel like a third place, so Z2 days and sharper work both fit. Locals also look beyond the city for anchor events like Tokyo Legacy Half Marathon, Tsukuba Marathon, Gunma Marathon, and Tokyo Marathon entries.

Riders start with the Sagamihara-Chigasaki Cycling Route when they want river miles from Lake Tsukui Shiroyama Park toward Sagami Bay. The route runs 6 km and gains 331 m, so it works as base miles more than a monster day. The next route covers 5 km with 268 m of ascent. The fourth route covers 4 km and 2,406 m of climbing. The climbs sit west and north toward the Tanzawa Mountains, Miyagase Lake, Lake Tsukui, and 大垂水峠.

Summer nights drop to 9°C and days that can still push over 30°C. Locals keep summer rides and runs controlled, with early Z2, shaded park loops, and lake roads around Miyagase Lake and Lake Tsukui. September brings the wettest stretch, so shoes, tires, and timing matter more. Winter lows hit 2°C with light to no snowfall. Winter keeps both sports moving, but the city centre feels better for intervals while the western hills ask for warmer kit.