Mt. Fuji International Marathon 2026: Race Guide, Course & Tips

There are races with great scenery and there are races with great courses. It is rare to find one where both are genuinely world-class. The Mt. Fuji International Marathon is that rare thing: a JAAF-certified 42.195km road race looping two glacier lakes at the base of Japan’s most sacred mountain, with a rolling course that looks almost flat on paper but earns its reputation the hard way in the back half.

In December, the mountain is at its most photogenic. The summit is snowcapped, the crowds gone from the summer climbing season, and the lakeside roads quiet and clean. You run the north shore of Lake Kawaguchiko with Fuji directly in your eyeline for the opening 12km, cross the bridge at Ohashi, climb through into the Lake Saiko plateau — that is where the real race starts — and then chase the long return through Katsuyama and back to Funatsuhama. The full circuit is one of the most beautiful marathon routes in Asia, and that is not marketing copy; it is what runners who have done it say when they come back.

The 2026 edition is the 15th under the Mt. Fuji International Marathon name and the first to run across two days. Saturday December 12 introduces the Fuji View Run (4km and 8km) and Fuji View Walk — new events designed to let non-marathon runners experience the course. The full marathon goes Sunday morning, December 13. If you have already entered: good, because international general entry sold out in June 2026 within days of opening. Tour packages through Kinki Nippon Tourist had limited slots remaining as of mid-2026.

This guide covers everything — course breakdown, the hill that catches people out, the weather, hotels, access from Tokyo and the airports, and the 2025 results. Whether you are already registered or planning for 2027, this is your reference document.

Race at a Glance

What Makes the Mt. Fuji International Marathon Worth Running?

The backdrop is genuinely singular

Most race marketing promises “stunning scenery.” This one delivers it in a way that requires no exaggeration. You spend the first 12km running directly toward Mt. Fuji on the north shore of Lake Kawaguchiko, close enough to see the snow contours change as morning light moves across the face. In December, the summit is reliably white, the skies are among the clearest of any month in the Fuji Five Lakes calendar, and the reflection in the lake on calm mornings is the kind of thing that makes you slow down even at race pace. You will not forget the view from the Kawaguchiko Ohashi Bridge at km 12.

December is the sweet spot

The race moved from November to December in 2026 and the timing change is a genuine upgrade for international runners. December at Fujikawaguchiko brings race temperatures of 3–8°C on the morning of the gun — cold enough to run fast, clear enough (on average) to actually see the mountain. The autumn leaf season has wound down, which means crowds in the town are manageable and accommodation is easier to book outside of the official tour packages.

Two-day festival format — new for 2026

The 2026 edition is the first to run across two days, with the Fuji View Run (4km and 8km) and the Fuji View Walk debuting on Day 1 (Saturday, December 12). This is significant if you are travelling with non-running partners or with family — there is now something for everyone on both days. The full marathon and the 17km Around KAWAGUCHIKO race run Sunday. Bring your crew.

The bib that breaks language barriers

Every runner’s bib carries their first name plus a personal icon — no race number, just your name, printed large enough for spectators to read. In a field that draws runners from over 35 countries, this is one of those small design details that actually works. You will hear your name called by strangers in Japanese on the north shore of Kawaguchiko. It adds a jolt of energy you don’t anticipate and can’t replace with a playlist.

The medal is unlike anything else in marathon racing

The full marathon finisher medal is self-standing — and here’s the hook: collect five editions and the medals slot together to form a three-dimensional scale model of Mt. Fuji. Light it from within and it glows. This is not a novelty. It is genuinely one of the more elegant medal concepts in the world marathon circuit, and it has turned a significant number of one-time runners into repeat participants. The Around KAWAGUCHIKO medal works the same system. The Charity Fun Run medal is shaped like Fuji itself.

Abbott WMM age group rankings and MCC points

If you are running toward an Abbott World Marathon Majors Age Group ranking, this race counts. It is also a Marathon Challenge Cup qualifying event, which issues special certificates for sub-3:00 (men), sub-3:30 (women) and personal best performances. For competitive age-groupers, December in Fujikawaguchiko can be a serious race, not just a bucket-list trip.

The Course — Mile by Mile

Km 0–12: Start to Ohashi Bridge — The Scenic Trap

The race starts at Funatsuhama, a wide parking lot right on the edge of the lake. In the first kilometre, before your legs have even found their rhythm, Fuji appears ahead and everything feels effortless. That is the trap. The north shore road is flat, fast and visually overwhelming. The temptation is to run by feel rather than by watch, and on a cold December morning when the adrenaline is high and the mountain is right there, feel always lies. The road hugs the shore through the town of Kawaguchiko, passing boat landings and small restaurants, then curves north. By km 10 you have a clear line of sight across the full width of the lake. At km 12 you cross the Kawaguchiko Ohashi Bridge — a long, slightly arching span over the lake. There is a small but noticeable rise on the bridge. The first cutoff point is here at 10:57. If you are on pace for a 5:30 finish, you need to cross this bridge before 1 hour 57 minutes. Most recreational runners clear it with time to spare.

Km 12–20: South Shore and the Gathering Storm

After the bridge, the course rounds the south shore of Kawaguchiko, narrowing into residential streets before heading west. The terrain is still mostly flat. You pass through the town of Funatsu and begin to move away from the lake’s main tourism strip. The scenery becomes more forested and quieter. Crowd support is thinner here. The second cutoff (km 20.5, Terasaki Fisheries Cooperative Parking Lot) must be cleared by 12:03 — three hours three minutes after the gun. If you are chasing the 6-hour limit, you need to reach here inside 3:03. This is still achievable for most runners who started within themselves.

Km 20–27: Heartbreak Hill and the Lake Saiko Transition

This is where the race changes character. The road begins to climb as it leaves the Kawaguchiko basin and pushes up toward the Lake Saiko plateau. The rise is not brutal in isolation — it is not a mountain stage. But it arrives right at the point where glycogen reserves are being tested, the first half buzz has worn off, and the legs are beginning to carry the weight of the flat kilometres before it. The climb is gradual at first, then steepens noticeably just before the descent into the Saiko area, which is the point described on the official site and by runner reviews as the course’s signature hill. Once you crest it and drop into the Saiko valley, the road flattens and you get one of the most beautiful views of the day — the lake’s surface through the trees with Fuji in the background. The km 27.3 cutoff (West Lake Fishing Inn) is 4 hours from the start gun. Runners who are struggling here often cite this section as where the race turned on them.

Km 27–35: Saiko Lakeside — Where Times Are Made and Lost

Lake Saiko is quieter, smaller and less touristy than Kawaguchiko. The road here is flat and mostly open. In still conditions, this is where a runner who survived Heartbreak Hill in good shape can start to move. In wind, this is where everything gets hard — the road is exposed across the Saiko basin. The km 30.3 cutoff (Saiko Community Centre) must be cleared by 13:24. The km 35.1 cutoff (Ashiwada Branch Office) must be cleared by 14:03. That 39-minute window for 4.8km sounds reasonable until you do the maths on spent legs after 30km on a cold day. This is the section where runners who went out too hard through the flat north shore begin to fall away from the cutoffs.

Km 35–42.195: Katsuyama Return and the Final Push

After Ashiwada the course heads east through Katsuyama, passing the last major checkpoint (km 37.7, Roadside Station Katsuyama) at cutoff 14:24. This is a popular spectator point — the final viewing spot before the finish. The return road back toward Funatsuhama is exposed and can be windy, running broadly parallel to the south shore of Kawaguchiko. Fuji reappears to the north. The finish at the Funatsuhama parking lot is flat and open, with the finish line visible from several hundred metres out. There is no final incline to negotiate. Cross the line, collect your medal and your towel, and look at the mountain one more time.

Registration

International entry at ¥25,000 (~USD 165 / INR 13,700 at mid-2026 rates) includes a special long-sleeved event T-shirt, luggage storage and paid parking. The domestic general entry at ¥12,900 does not include a participation T-shirt (available for separate purchase) or guaranteed luggage storage. A bib fastener (clip, replacing the traditional safety pins which are not distributed) is ¥500 and recommended at registration. Parking pre-registration opens October 1, 2026 on a first-come, first-served basis.

For remaining international tour packages, contact: info-mtfujimarathon@or.knt.co.jp. Tour options include Course D (Shinjuku stay with shuttle transport) and Luxury Courses (lakeside resort, private transport, exclusive souvenirs).

Race Weekend Schedule

Exact start times for the Fuji View Run and Walk on December 12 were not published at time of writing. Check the official site at en.mtfujimarathon.com for the confirmed schedule in the weeks before the race.

Weather on Race Day

December is reliably the clearest and driest month in the Fujikawaguchiko calendar, which makes the race timing genuinely excellent for views. The tradeoff is cold — particularly at the start and in the exposed sections near Saiko and Katsuyama. Wind off the lakes can be sharp and unpredictable; a 7°C day with a stiff north wind feels significantly colder than the number suggests. Plan a throwaway top layer for the start. By km 10–15 you will almost certainly have warmed up enough to run without it. Historical race days have ranged from perfect clear sun to biting cold rain, with snow at lake level extremely uncommon but possible.

Awards and Elite Information

Past Results — 2025 Defending Champions

The 14th edition (December 14, 2025) produced a new men’s course record. Tomoya Hinohara broke the previous mark of 2:21:36 set by Yusuke Kodama in 2018 by four seconds, running 2:21:32 to win by over eight minutes. The women’s race was won by Aiko Ota in 3:07:15.

Men’s Results — 2025

Women’s Results — 2025

All-Time Course Records

Spectator Guide

The Kawaguchiko–Saiko loop is a good spectator course because it is compact enough that a determined supporter can see their runner in three or four spots across the day. The town itself is small and walkable. Public transport is essential — road closures are in effect throughout race morning and private cars will be stuck. Take the Fujikyu Railway or highway bus to Kawaguchiko Station and move on foot or local shuttle.

Where to Stay

Accommodation in Fujikawaguchiko books out fast for marathon weekend. Official tour packages (via Kinki Nippon Tourist) that remain available include hotels at the lake and in Shinjuku, Tokyo. If you are booking independently, do so as early as possible — most lakeside properties within walking distance of the venue will be full months before December 13.

Traditional ryokan accommodation is worth considering specifically for this race. Most include dinner and breakfast (kaiseki multi-course meals), an onsen bath, and a tatami room — the combination of a hot spring soak and a substantial rice-based breakfast the morning before a marathon is genuinely useful for race preparation, not just tourism. Book the night before the night before as well if budget allows, to avoid rushed travel on race morning.

International Runners — Visa and Travel

A Short History of the Mt. Fuji International Marathon

The race has been running in one form or another since 1976, when it was established as the Kawaguchiko Marathon — a two-lap event around Lake Kawaguchi that drew mostly local and regional runners. For 36 editions over more than three decades, it was a solid domestic race in a beautiful part of Yamanashi Prefecture. Then in 2012, two things happened at once: Mt. Fuji was nominated for UNESCO World Cultural Heritage status (a designation that came through in 2013), and the race was rebranded as the Mt. Fuji International Marathon with a new course — a single loop extending out from Kawaguchiko to encompass Lake Saiko, adding distance, drama and the hill that now defines the race’s character. The inaugural 2012 edition attracted over 23,000 registrations against 13,000 the year before. The organisers were overwhelmed; traffic backed up and over 5,000 runners could not reach the start in time. The race has learned and scaled since then.

From the 2012 rebrand, the race has grown steadily into a genuine international event drawing runners from over 35 countries each year. The international entry route via Run Japan formalised the overseas participation structure and gave the race a cleaner pathway for non-Japanese speakers. The Abbott WMM Age Group World Rankings affiliation added a competitive dimension for the age-group field. The Medal Mountain concept — five editions’ medals fitting together to form a 3D Mt. Fuji — quietly became one of the more effective retention mechanics in the regional marathon calendar, turning single-year visitors into loyal repeat participants.

The 2026 edition — the 15th under the current name, the 51st total including the old Kawaguchiko Marathon — marks the first two-day format, adding Day 1 events for shorter distances and non-marathon participants. It is a natural evolution for a race that has always positioned itself as a destination event rather than purely a performance race. The setting has never changed: a World Heritage mountain, two glacial lakes, and a finish line where the mountain is directly in front of you when you cross it.

How the Mt. Fuji International Marathon Compares

Frequently Asked Questions

Is the Mt. Fuji International Marathon a good race for first-time international marathoners?

Yes, with one important caveat: it is not a beginner course. The Heartbreak Hill section between km 20 and km 27 and the six-hour time limit with strict cutoff points make this harder than a flat city marathon. That said, the organisation is excellent, English support is available, the route is well-marked, the volunteer coverage is strong throughout, and the access from Tokyo is straightforward. If you have completed a full marathon before and can reliably finish in under 5:30, this is a very manageable first international race and an exceptional experience.

How do international runners enter the Mt. Fuji International Marathon?

International runners have two entry routes: General Entry via Run Japan (runjapan.jp), which is first-come, first-served and sells out rapidly — for 2026 it sold out within days of opening on June 1 — and Tour Entry via Kinki Nippon Tourist (KNT), which packages accommodation, transport and race entry together. The tour entry typically has slightly longer availability than general entry. For 2027, create your Run Japan account well in advance and be ready at 10:00 AM JST on the opening date.

What is the Heartbreak Hill on the Mt. Fuji Marathon course?

Heartbreak Hill is the name runners and race commentary use for the climb between approximately km 20 and km 27 where the course transitions from the Lake Kawaguchiko basin up to the Lake Saiko plateau. It is a gradual but sustained climb — the course’s single significant ascent in an otherwise rolling route — and its impact is magnified by the fact that it arrives mid-race when glycogen reserves are already under pressure. The descent into Saiko that follows it is a welcome relief, but runners who have not managed their first-half pace often find their race unravelling in the Saiko and Katsuyama sections that follow.

Can you see Mt. Fuji during the race?

Yes — and it is spectacular. Mt. Fuji is visible for much of the course, most dramatically on the flat north shore of Lake Kawaguchiko in the first 12km (where the mountain sits directly ahead of you) and again on the Saiko lakeside section after the climb. December is statistically the clearest month of the year in the Fuji Five Lakes region, with the fewest rainy days and the best visibility conditions. The summit will be fully snow-capped. There is no guarantee — cloud and weather can obscure the view — but your odds of seeing Fuji clearly during a December race are better than almost any other month.

What happens if you miss a cutoff at the Mt. Fuji International Marathon?

There are six intermediate cutoff points on the full marathon course. If you miss any of them, you will be directed off the course and the race will be over for you. The time limit is measured in gross time — from the starting gun, not your chip start. The cutoffs are strict and in line with the six-hour overall limit. If you are targeting a finish between 5:00 and 6:00, study the cutoff table closely and calculate your required pace at each checkpoint before race day. Missing the km 35.1 cutoff (Ashiwada Branch Office, 14:03) is the most common late-race elimination point for recreational runners.

What should I bring to the Mt. Fuji International Marathon?

Your own safety pins or the official bib clip (¥500, ordered at registration) — the race does not distribute safety pins. A throwaway warm layer for the start (clothing collection areas are at the start and 2km into the course). Gloves and a hat for the cold morning and the exposed Katsuyama return section. A nutrition plan that covers the back half of the race, because the km 27–42 section on tired legs in cold wind is harder than it looks on paper. Your bib and timing chip, picked up in advance from Alpen TOKYO in Shinjuku or at the venue. And a camera — or just run with your eyes open.