Ishioka, Ibaraki Pref., Japan · Sunday, September 27, 2026

Fixed Distance 50K

Tsukuba Renjyo 50 Km Road & Trail Run

24 days to go

50 km Distance

1,667 m Climbing

5.0 Grit · Challenging

36.1908° N, 140.2884° E © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 33 m / km Rolling. Moderate undulations. Requires consistent effort across varying grades.

Time limit 8.5 hours 10:12 min/km average. Generous. Walkable throughout for most of the field. Tighter than 77% of 50K races. Measured against 982 races of the same distance. Cut-off calculator →

Field size ~169 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, September

Daytime high 28°C

Night low 19°C

Rainfall Wet — expect rain

Daylight 12 h 01 m of light

Regional 2001-2020 average for September — NASA POWER, grid elevation 33 m. Not a forecast.

The Aid Station

Course-specific beta from the community

⛰️ terrain

This is a rolling course. Expect fast, runnable sections where rhythm is key.

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 50 km of trail with 1,667 m of ascent.

Trail Running Shoes 33 m of climb per kilometre — grip and rock protection before cushioning.
Race Nutrition 50 km of self-supported fuelling between aid stations.
Hydration Vests Pole attachment and chest-strap stability on steep ground.
Trekking Poles 1,667 m of ascent to walk up.
GPS Watches Battery life first — a 50 km day outlasts most full-GPS modes.