Saitama

TrailEN

FunTrails Round: Chichibu & Okumusashi 100 MILE/100K/50K

FunTrails Round 秩父&奥武蔵 100MILE/100K/50K

Date

November 14, 2026

Location

Saitama

Distance

Trail

Entry Fee

—

Time Limit

32h

Capacity

900 runners

Finish Rate

—

Last updatedJuly 20, 2026·35 days agoOfficial site checkedJuly 20, 2026Info may be outdated

Suggest a correction →

AI summary

TRAIL

Elevation gain (D+)

9,722 m（100 miles: 9,722 m / 100K: 6,831 m / 50K: 2,985 m）

Aid stations

Full100MILE: A1–A14 (14 aid stations); 100K: A1–A9 (9 aid stations); 50K: A1–A4 (4 aid stations). Each aid station has a time limit (except A1).

Mandatory gear

Cell PhonePortable cup (150 cc or more)At least 1 L of waterSurvival BlanketWhistleTaping TapePortable ToiletCourse MapHooded rainwear set (50K includes jacket only)First Aid KitMy Number Health Insurance Card or Certificate of EligibilityTravel Expenses Upon RetirementFlashlight and two sets of spare batteries (one set for the 50K)A backpack carried on both shouldersLong-Sleeve Shirt for Cold WeatherLong Tights for Cold WeatherGloves and a hat that covers the earsFlashing Light

✓ Gear check at registration

Gear up at STRIDE LAB

Bottles & Cups ↗Lights ↗First Aid & Emergency ↗Packs & Bags ↗Rain Gear ↗Warm Layers ↗Gloves ↗All trail & ultra gear ↗

The online store run by hashiru.jp's operator

Time limit & cutoffs

100MILE/100K: Time limit of 32 hours. 50K: Time limit of 12 hours. There are checkpoints at each aid station (check-in required; must depart within 15 minutes of passing the checkpoint).

Trekking poles

Not allowedThe use of poles is prohibited. It is also prohibited to use sticks found on the trail as substitutes for poles.

Pacers

Allowed

Course preview

OptionalTest rides are permitted, but they are prohibited after 8:00 p.m. You must observe proper etiquette when riding in residential areas and on public roads.

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.

Find a place to stay

STAY

Opens an external booking site with check-in set to the day before the race.

Search on Rakuten Travel ↗Search on Booking.com ↗

Links to external booking sites (affiliate programs may be used). Reservations and payments are handled on each site.

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

English Support

INBOUND

English information page available on the official site.

Entering from overseas

INBOUND

Possible via an entry platform

How to enter

Entry is via the RUN JAPAN platform (linked from the official site).

Entry platform

RUN JAPAN

Notes

The race holds ITRA/UTMB Index certification (100M: 6pts, 100K: 5pts, 50K: 3pts). The page does not specify overseas-specific entry details; check RUN JAPAN for address and payment requirements.

Summary for guidance. Always confirm details on the official site. Last verified: July 27, 2026