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Held in early March on a JAAF-certified 5 km loop inside Showa Kinen National Government Park in Tachikawa, western Tokyo. The 30 km, half marathon and 10 km races run repeated laps of the same tree-lined park circuit, while the 5 km and the parent-child 1 km races cover a single lap. Start and finish sit together on the gingko avenue beside Undo Hiroba, so spectators can follow every race from one spot. All finishers receive a participation prize and a record certificate, and aid stations are placed every 2.5 km.
Start and finish on the gingko avenue beside Undo Hiroba, the same point for every race
JAAF-certified 5 km loop inside Showa Kinen National Government Park
Aid service every 2.5 km on the course
Aid service also provided after the finish
Start / Finish
Gingko avenue beside the venue (Undo Hiroba), Showa Kinen National Government Park. The same point is used by every race
Gingko avenue beside the venue (Undo Hiroba), Showa Kinen National Government Park. The same point as the start
Terrain
Route
Race Day
What you get
Finisher certificate
Chip timing
Participation prize
Record certificate
Record collection (results booklet)
Provisional results displayed for all participants
Sports injury insurance taken out by the organiser
Stretching session led by a former Japanese World Championships representative
Pacemakers planned for the 30 km, the half marathon, or both
5 km split timing with real-time progress updates
On the day
Bag drop
Food vendors
Merchandise
Marshals on course
Before you enter
Other questions
The entry period runs from 18 July 2026 at 00:00 to 14 February 2027 at 23:59, but entries close earlier if the field fills.
No. The 30 km, half marathon and 10 km are open to both JAAF-registered and general runners. If you enter the JAAF-registered division, record your 2026 JAAF registration details, name in Roman letters and JAAF ID in your RUNNET My Page profile first.
Yes. There is a baggage area attended by staff, but valuables cannot be stored.
Pacemakers are planned for the 30 km, the half marathon, or both.
Tachikawa, Japan
Saturday, March 6, 2027
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€32
entry fee