www.ratrace.com

Japan Sea to Summit

location_on

Oyama, Ibaraki, Japan

calendar_today 09 Jul, 2026 – 13 Jul, 2026

About the Event

Embark on the ultimate pilgrimage from ocean to iconic volcano summit in a single, epic day. Rat Race Sea to Summit: Mount Fuji is a 5-day expedition from 9-13 July 2026, culminating in a breathtaking 50km ultramarathon that ascends from sea level to the 3,776-meter summit of Japan's most sacred mountain. This extraordinary journey offers a unique, supported challenge, doubling the standard height gain and distance of the classic climb, with a full itinerary including acclimatization hikes, expert guides, and celebratory relaxation at Lake Kawaguchi. More than a race, it's a meticulously crafted adventure for seasoned trail runners seeking to conquer one of the world's most iconic peaks in an unforgettable way. Secure your spot for the expedition of a lifetime.

Races Offered

ULTRAMARATHON

Jul 09, 2026

straighten

Distance — 50K

terrain

Type — —

timer

49 days remaining

Weather History

These values represent the 3-year monthly averages for July in Oyama.

thermostat Temperature

23.6° / 32.9°

wb_sunny Feels like

27.3° / 36.1°

light_mode Avg sunshine hours

10h 2m

water_drop Avg rainfall

3.2 mm

ac_unit Avg snowfall

—

air Avg wind speed

7.3 km/h (Light breeze)

opacity Sweat loss rate

Very high

terrain Course conditions

Hard and dry surface

sunny Max UV Index

Very High (8.0)

humidity_mid Humidity

75.9%

wb_twilight Sunrise

04:35

nightlight Sunset

18:56

About Oyama

Learn more about the host city, Oyama.

Oyama (小山) is the second most populous city in southern Tochigi prefecture, Japan. Oyama is above all a major train junction, and most visitors won't stop much longer than it takes to change trains.