Ogose, Japan · Saturday, January 16, 2027

Fixed Distance 50 mi

Jungle Guruguru ZERO

135 days away

68 km Distance

not publishedn/a Climbing

3.4 est Grit · Challenging

Calculated from 68 km alone — the organiser has not published an elevation profile. Read 3.4 as a floor, not a verdict.

35.9589° N, 139.2900° E © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Field size ~21 Small. Long stretches with nobody in sight.

DUV results for the 2026 edition (68km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, January

Daytime high 6°C

Night low -4°C

Rainfall Mostly dry

Daylight 9 h 59 m of light

Regional 2001-2020 average for January — NASA POWER, grid elevation 264 m. Not a forecast.

The Aid Station

Course-specific beta from the community

👟 gear

With trail terrain, choose a shoe with moderate cushioning for optimal performance.

By UltraHub Expert

Gear for this race

Chosen for 68 km of trail.

Trail Running Shoes 68 km of trail — cushioning that is still there in the last quarter.
Race Nutrition 68 km of self-supported fuelling between aid stations.
Hydration Vests Flask capacity for 68 km, without the bounce.
GPS Watches Battery life first — a 68 km day outlasts most full-GPS modes.