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Chiba

Ultra Marathon

4th Annual 300K Tour Around the Boso Peninsula

第4回 房総半島1周300K

Date
July 18, 2026
Location
Chiba
Venue
千葉県中南部
Distance
Ultra Marathon
Entry Fee
Time Limit
55h
Capacity
Finish Rate
Last updatedJune 18, 2026·13 days agoOfficial site checkedJune 18, 2026

AI summary

ULTRA

Aid stations

Standard300 km course: 7 aid stations; 210 km course: 5 aid stations. Napping or taking extended breaks at aid stations is not permitted. Timing will be recorded at each aid station.

Mandatory gear

My CupSnacks for on the goAt least 1,500 ml of waterMap (GPX Data/Google Maps)Cell Phones/SmartphonesPower BankHeadlightsFlashlightRear turn signals (2)Emergency SheetRainwear JacketSmall changeHealth Insurance Card

Time limit & cutoffs

300 km: Time limit 55 hours (8 checkpoints); 210 km: Time limit 45 hours (6 checkpoints). Finish deadline: July 20 at 3:00 p.m.

Pacers

Not allowed

Drop bag

Allowed

Start time

300 km: Saturday, July 18, starting at 8:00 a.m. (Yakuyu Ichihara Store). 210 km: Saturday, July 18, starting at 7:00 p.m. (Pakuchi Bank). Includes night running. Napping at aid stations is not permitted.

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

3.8

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/AFinishability3.8AtmosphereN/AAccess3.0Value for MoneyN/A

Runner Reviews

REVIEWS
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Overall Score

3.4

/ 5.0 · 6-axis avg