This race has finished.

The next edition is undecided. Please check the official site.

Status updated: June 29, 2026

Nagano

TrailEN

Oku-Shinano 100 Trail Running Race (100 km, 50 km, 25 km, 8 km; 500 m–2 km for elementary school students and preschoolers)

奥信濃100トレイルランニングレース（100km, 50km, 25km, 8km, 小学生・未就学児500m～2km）

Date

June 5, 2026

Location

Nagano

Venue

長野県木島平村

Distance

Trail

Event	Entry Fee	Time Limit	Capacity
100km	¥31,000	21h	—
50km	¥15,500	10h 30m	—
25km	¥9,900	7h	—
8km	—	2h	—

Finish Rate

—

Last updatedJune 29, 2026·3 days agoOfficial site checkedJune 29, 2026

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AI summary

TRAIL

Elevation gain (D+)

4,800 m（100 km: 4,800 m / 50 km: 2,500 m / 25 km: 1,500 m / 8 km: 380 m）

Aid stations

FullThe 100km course features 7 checkpoints and multiple aid stations (Kaya-no-Hira, Nukachi, Keyaki Forest, etc.). The A3 Kaya-no-Hira aid station offers water only. Soba, pork miso soup, bananas, and other items are available.

Mandatory gear

Mobile Phone for Entry RegistrationTravel CupAt least 1 liter of water and foodSurvival Blanket (130 cm or more × 200 cm or more)Taping TapeCourse MapFully Waterproof Rainwear with Hood (Jacket)First Aid KitHealth Insurance CardFlashlight and Spare BatteryBear Bell

✓ Gear check at registration

Time limit & cutoffs

100 km: 21 hours (7 checkpoints), 50 km: 10 hours 30 minutes (3 checkpoints), 25 km: 7 hours (1 checkpoint), 8 km: 2 hours (no checkpoints)

Trekking poles

Allowed with conditionsPoles are permitted. However, their use is prohibited in the Kaya-no-Hira area between the 48 km and 58 km marks.

Pacers

Allowed

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 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

0.4

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 SPORTS ENTRY platform (link provided on the official site).

Entry platform

SPORTS ENTRY

What you need

Age requirements apply (100km/50km: 18+, 25km: high school age+). Minors need parental consent. Runners must be confident they can complete the course within cut-off times and follow mountain rules.

Payment

Fees vary by distance: 100km ¥27,500, 50km ¥13,200, 25km ¥8,800, 8km free (TBC), Kids ¥2,200. Student discounts available.

Entry period

100km/50km: 14 Dec 2025 (21:00) – 15 Feb 2026. Pacer/25km/8km/Kids: 14 Dec 2025 (21:00) – 10 May 2026.

On race day

The site has multilingual support (English, Chinese, Korean, French, Italian, Spanish, German) suggesting some international runner accommodation.

Notes

The 100km is a Western States 100 2026 qualifying race and awards ITRA points (4 pts). The site offers multiple language versions which may assist overseas runners.

Summary for guidance. Always confirm details on the official site. Last verified: June 29, 2026

Runner Reviews

REVIEWS

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Overall Score

1.7

/ 5.0 · 6-axis avg

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