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

Fixed Distance 50 mi

Tsukuba Renjyo 70 Km Road & Trail Run

24 days to go

72 km Distance

2,580 m Climbing

7.5 Grit · Hardcore

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

What the course asks

Climbing rate 36 m / km Rolling. Moderate undulations. Requires consistent effort across varying grades.

Time limit 13 hours 10:50 min/km average. Generous. Walkable throughout for most of the field. About average for a 50 mi. Measured against 445 races of the same distance. Cut-off calculator →

Field size ~141 Mid-sized. Company early, well spread out by halfway.

DUV results for the 2025 edition (72km) — 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 72 km of trail with 2,580 m of ascent.

Trail Running Shoes 36 m of climb per kilometre — grip and rock protection before cushioning.
Race Nutrition 72 km of self-supported fuelling between aid stations.
Hydration Vests Pole attachment and chest-strap stability on steep ground.
Trekking Poles 2,580 m of ascent to walk up.
Headlamps A 13 h limit puts you out there after dark.