HIROSHIMA 100K

Test yourself on a journey through the mountains that ring the city of Hiroshima.

Race Category

ws100KM

Running Stones

Finals Access

Available soon

Distance

94.6 KM

Elevation Gain

5587 M+

Start Date

Saturday 10th April 2027

Race Start

Hiroshima Gate Park - 05:00

Max Allowed Race Time

29 Hours

HIROSHIMA 100K

From riverside paths and a sacred waterfall, over the course's highest point at Mt. Shiraki, through a second great test at Mt. Abu, and back along the river to the city — a full traverse of the mountains that ring the Hiroshima delta, finishing on the Peace Line beneath the iconic A-bomb Dome.

Race Details

HIROSHIMA 100K	SATURDAY 10 APRIL 2027
MANDATORY GEAR	All runners must carry mandatory gear during the race. Details are on the Mandatory Gear page.
MINIMUM AGE	18 years old on 10 April 2027
START TIME	05:00am
TOTAL ALLOWABLE TIME	29 hours
CUTOFF PACE REQUIRED	18:30 mins/km
FIRST FINISHER	10:30:00 (3:30pm Saturday 10 Apr 2027)
FINAL FINISHER	29:00:00 (11:00am Sunday 11 Apr 2027)
AWARDS & PRIZES	Overall Top 3 Overall finishers (male and female) will receive a direct entry to the UTMB Final (CCC) at their own cost. Top 5 Overall finishers (male and female) will receive commemorative gifts. Age Groups Top 3 finishers in each age group (men and women will receive commemorative gifts. (Excluding those eligible for overall awards)
UTMB World Series	HIROSHIMA 100K is a UTMB World Series 100K Event. Finishers of HIROSHIMA 100K will receive 3 running stones.

The HIROSHIMA 100K begins in the heart of Hiroshima, but soon leaves it behind. Runners follow the Ota River out through the city's edges before hitting the trail. Passing a shrine carved into the rock of a sacred waterfall marks the start of an epic journey across the ring of mountains that surrounds the Hiroshima delta.

From here, the course rarely settles — ridgelines give way to steep, hands-on climbs, technical descents, and long stretches of forest road, cresting at an elevation of almost 900m on Mt. Shiraki before continuing to dip and climb to the back end of the course’s major test at Mt. Abu.

Warm welcomes and local delicacies at well-stocked aid stations provide opportunities not only to refuel and recover, but also to re-compose yourself. This is not a race won in any single section. It's earned through hours of disciplined, patient pacing, culminating in a flat riverside return to central Hiroshima and a finish along the Peace Line in the shadow of Hiroshima’s A-bomb Dome monument.

KEY INFO

Useful information to know before starting an extraordinary adventure.

MANDATORY GEAR

Every runner carries a mandatory gear list — the minimum needed to stay safe in the region's unpredictable mountain weather. Random checks take place at selected aid stations.