Mt. FUJI 100 FUJI100mi

Overall score 2.9Good
Thin evidence2 sources#47 of 61 ultras

Fuji to Fujiyoshida, Japan · 102.7 mi (165 km) · 6,463 m (21,200 ft) gain

Race day Fri 23 Apr 2027

Website (opens in a new tab)

Is it right for you?

Footing
Moderate2.7
Climbing
Hilly1.9
Overall cutoff
Normal3.3
Intermediate cutoffs
Reasonable3.0
Crew access
Some points3.0
First timer friendly
Demanding1.9

Footing and climbing are course traits: 5 is the smoother, flatter end, not a better race.

Watch out: Some runners will encounter a second night All 4

Held back by course (1.5) and race (2.1).

Best for

Provisional: based on 2 sources. Why

Ran it? Your rating helps.

Score breakdown

Every score is out of 5, and 5 is always the better end.

Each bar is a range of 0.25 points; the light bar holds this race. The average race scores 3.4.

What does this score mean?

Why runners love it

  • Japanese-language firsthand accounts from different performance levels
  • Long mountain route around Mount Fuji

Watch out for

  • Some runners will encounter a second night
  • Wave-specific time allowances differ
  • General entry requires qualifying results
  • Current intermediate deadlines and detailed support map need checking

Latest or next race

Fri 23 Apr 2027

Official race site(mtfuji100.com, opens in a new tab)
Climbing
6,463 m (21,200 ft)
Cutoff
45.5 hours
Pace needed
26:36 per mi (16:32 per km)
Field
about 2,000

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What runners say

Overall score 2.9 out of 5

2 reviews and race reports

2 reviews

  • Kensuke Sato

    Raced 2023 · Kensuke Sato on note

    Tone: Mixed

    Sato recounts the FUJI long-distance event, explicitly connecting it to the former UTMF name. Hard climbing, a crowded aid station, a sleep stop and later nausea complicated his race, while volunteers and familiar faces helped him continue. This Japanese-language account concerns the 2023 course, not the current distance or support map.

    Covers Support, Course, Conditions

    Read on note.com (Kensuke Sato on note, opens in a new tab)

  • Hajime Manba

    Raced 2023 · Paagoworks athlete interview

    Tone: Mixed

    In a sponsor-hosted firsthand interview, Manba describes his fourth-place FUJI finish in 21:24:07. Early heat, rough climbing and a missing preferred food at one aid station required adjustments, while companionship and finish-line encouragement helped. His elite experience on the 2023 FUJI course is distinct from the shorter KAI race.

    Covers Support, Course, Conditions

    Read on paagoworks.com (Paagoworks athlete interview, opens in a new tab)
Ran Mt. FUJI 100 FUJI100mi? Rate it

Pick a score, then tell the next runner about the footing, cutoffs and aid stations.

Scores

Open a category for its ratings and the evidence behind them.

Below par. How runners feel about it, how well it is run, and the community around it. Counts for 25% of the overall score.

Toughness for its distance: Very tough

  • Runner satisfactionLoved4.0

    Both firsthand accounts value finishing despite substantial physical difficulties. · Low confidence

  • OrganizationAdequate3.0

    Few accounts establish this aspect for the current edition. · Low confidence

  • Community and vibeWarm4.1

    Volunteers, familiar faces and other runners helped both participants. · Low confidence

Good. Aid stations, crew access, drop bags and pacer rules. Counts for 25% of the overall score.

  • Aid stationsStandard3.3

    Historical accounts describe helpful support alongside crowding and an unavailable preferred food. · Low confidence

  • Crew accessSome points3.0

    Few accounts establish this aspect for the current edition. · Low confidence

  • Drop bagsSome stations3.0

    Few accounts establish this aspect for the current edition. · Low confidence

  • PacersLate race3.0

    Few accounts establish this aspect for the current edition. · Low confidence

Below par. Course marking, scenery, and how runners rate the trail itself. Counts for 15% of the overall score.

  • Course markingMostly clear3.0

    Few accounts establish this aspect for the current edition. · Low confidence

  • SceneryPleasant3.0

    Few accounts establish this aspect for the current edition. · Low confidence

  • Trail experienceGreat3.7

    Mountain trails contrast with long road sections; reports emphasize demanding climbs. · Low confidence

Course traits, not part of the score

  • FootingModerate2.7

    Road stretches alternate with rough mountain trails and descents. · Medium confidence

  • RunnabilityMixed2.8

    Road sections offer running opportunities, while long climbs and fatigue require hiking. · Medium confidence

  • ClimbingHilly1.9

    Climbs 206 ft per mi (39 m per km), from the recorded elevation gain. · High confidence

Good. Race-day temperature and how predictable the weather is. Counts for 14% of the overall score.

  • Race-day temperatureWarm or cold2.7

    One elite account describes early heat; conditions across the full duration are less well documented here. · Low confidence

  • Weather reliabilityVariable3.0

    Few accounts establish this aspect for the current edition. · Low confidence

Course traits, not part of the score

  • AltitudeModerate3.0

    Few accounts establish this aspect for the current edition. · Low confidence

Good. How generous the overall and intermediate cutoffs are for the terrain. Counts for 13% of the overall score.

  • Overall cutoffNormal3.3

    The wave-dependent allowance is substantial but must cover difficult climbing and prolonged fatigue. · Low confidence

  • Intermediate cutoffsReasonable3.0

    Few accounts establish this aspect for the current edition. · Low confidence

Not part of the score

  • First timer friendlyDemanding1.9

    Qualifying experience is required and prolonged overnight effort complicates the route. · Medium confidence

  • Getting inHard1.9

    General entry combines qualifying results with a lottery when oversubscribed. · High confidence

Good. Getting there, places to stay, race-day logistics and value. Counts for 8% of the overall score.

  • Travel easeFair3.0

    Few accounts establish this aspect for the current edition. · Low confidence

  • Places to stayBook early3.0

    Few accounts establish this aspect for the current edition. · Low confidence

  • LogisticsSome complexity2.5

    Separate start and finish venues, start waves and limited support allocation add planning demands. · Medium confidence

  • ValueFair3.0

    Few accounts establish this aspect for the current edition. · Low confidence

Course

Route, 102.7 mi (165 km)

Point to point

Surface
Mixed
Climbing
6,463 m (21,200 ft)
Climb rate
Mountain, 39 m per km (206 ft per mi)
Night
Two or more nights
Start
17:00 / 17:15 / 17:30

Cutoffs and aid

Overall cutoff
45.5 hours
Pace needed
26:36 per mi (16:32 per km)

Getting in

Entry
Lottery + qualifier
Qualifier
One ITRA race worth at least four points, or two races worth at least three points each, within the stated two-year eligibility window.
Qualifies for
  • Western States
Field
About 2,000 runners

Footing, aid and entry notes in full

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Key facts

Checked against the 2027 edition on the official race site. Rules change, so confirm before you enter.

Location
Fuji to Fujiyoshida, Japan
Region
Outside the US
Typical month
April
Surface
Mountain trails interspersed with roads around Mount Fuji; this is not a climb to the summit.
Footing
Long mountain climbs and rough descents alternate with road sections. Historical reports describe different exact course lengths.
Cutoff rules
The first wave has 45 hours 30 minutes, the second 45 hours 15 minutes, and the third 45 hours. All finish by Sunday April 25 at 14:30, verified in the Japanese page because the English translation garbles the final clock time. Intermediate deadlines remain unverified.
Aid and crew
Unverified current support arrangements are left unknown.

Sources

Pages we used for facts and ratings. See how we rate ultras.

Training for Mt. FUJI 100 FUJI100mi? Moku Coach builds your plan around race day.