This race has finished.
The next edition is undecided. Please check the official site.
Status updated: September 29, 2026
Gunma
Ultra Marathon
Mount Akagi 100 Ultra Marathon 2026
赤城山100ウルトラマラソン 2026
Date
September 27, 2026
Location
Gunma
Distance
Ultra Marathon
Entry Fee
—
Time Limit
16h
Capacity
—
Finish Rate
—
Last updatedSeptember 29, 2026·TodayOfficial site checkedSeptember 28, 2026
AI summary
ULTRAAid stations
No details provided regarding aid stations. There is an aid station at the 59 km mark (Checkpoint 2). Special needs items can be picked up at the 59 km mark. Cups are not provided (you must bring your own cup).
Mandatory gear
Cell PhoneAt least 1 liter of fluidsRain gearHeadlightsSelf-illuminating reflectorBear BellPortable ToiletMy Cup
✓ Gear check at registrationGear up at STRIDE LAB
The online store run by hashiru.jp's operator
Time limit & cutoffs
Starts at 4:00 a.m. and ends at 8:00 p.m. (16-hour time limit). Checkpoints are in place (failure to pass a checkpoint results in disqualification).
Drop bag
Allowed
Start time
The race starts at 4:00 a.m. On-site registration is from 2:30 a.m. to 3:30 a.m. The opening ceremony begins at 3:45 a.m. This is an ultra-marathon with a nighttime start.
Summary for guidance. Always confirm mandatory gear and rules on the official site. Last verified: June 19, 2026
Access
ACCESSNote: the map shows the approximate area. Check the official site for the exact start/venue.
Score
RATINGSAuto-calculated from market research, official data, and online voicesSome scores unavailable（4/6）Course Appeal
コースの魅力
N/A
Organization & Support
運営・サポート
N/A
Finishability
完走しやすさ
0.0
Atmosphere
大会の盛り上がり
N/A
Access
アクセス
3.0
Value for Money
コスパ
N/A
Runner Reviews
REVIEWSNo runner reviews for this race yet.
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