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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
Entry Deadline
July 31, 2026
Location
Gunma
Distance
Ultra Marathon
Entry Fee
Time Limit
16h
Capacity
Finish Rate
Last updatedJune 18, 2026·13 days agoOfficial site checkedJune 18, 2026

AI summary

ULTRA

Aid 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 registration

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

ACCESS

Note: 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 unavailable4/6

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
Course AppealN/AOrganization & SupportN/AFinishability0.0AtmosphereN/AAccess3.0Value for MoneyN/A

Runner Reviews

REVIEWS
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Overall Score

1.5

/ 5.0 · 6-axis avg