Yorii, Saitama Pref., Japan · Sunday, November 29, 2026

Fixed Distance 50K

Trainic world Soto-Chichibu Trail Run 50km

87 days away

46 km Distance

2,900 m Climbing

6.7 Grit · Hardcore

36.1183° N, 139.1928° E © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 63 m / km Mountain. Significant climbing. Steep sections will require power hiking.

Time limit 11 hours 14:21 min/km average. Generous. Walkable throughout for most of the field. More forgiving than 69% of 50K races. Measured against 982 races of the same distance. Cut-off calculator →

Field size ~127 Mid-sized. Company early, well spread out by halfway.

DUV results for the 2025 edition (50km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, November

Daytime high 15°C

Night low 4°C

Rainfall Mostly dry

Daylight 9 h 57 m of light

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

The Aid Station

Course-specific beta from the community

⛰️ terrain

This is a mountain course. Poles are highly recommended for the sustained climbs.

By UltraHub Expert

👟 gear

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

By UltraHub Expert

Gear for this race

Chosen for 46 km of trail with 2,900 m of ascent.

Trail Running Shoes 63 m of climb per kilometre — grip and rock protection before cushioning.
Race Nutrition 46 km of self-supported fuelling between aid stations.
Hydration Vests Pole attachment and chest-strap stability on steep ground.
Trekking Poles 2,900 m of ascent to walk up.
GPS Watches Battery life first — a 46 km day outlasts most full-GPS modes.