Tokyo, JP · March 2027
Tokyo Marathon
Tokyo Marathon pacing plan for the flat, cool early-March race through central Tokyo. Per-km splits and nutrition from your VDOT.
- Distance
- 42.20 km
- Elevation gain
- 48 m
- Typical temp
- 5–15 °C
- Cutoff
- 7:00:00
The short version
A fair test with a few teeth
- Most runners crack near km 32 — fuel before km 30, not at it.
- Full overhead sun from km 18 — sunscreen and run the shaded side.
Next edition
7 March 2027
Typical race-day conditions
5–15 °C
We lock the real forecast into your plan in race week.
Course difficulty
ModerateDriven by a flat, fast course with mild conditions. Harder than Osaka Marathon (4.4), easier than Valencia Marathon (4.4) — tougher than 16% of the races we cover.
Race data quality
Medium confidence
Auto-generated from GPS route + elevation data
Course distance, climate, and broad course features are suitable for pacing previews. Elevation profiles and aid-station details are approximate and should be checked against the official race packet before race day.
Elevation profile
Route-derived (GPX + DEM)
Paid strategy guardrail
Official race packet remains source of truth
- Open-Meteo historical climate archive (2022–2024)
Step 1 · Free preview
See the course-adjusted plan first
Enter one recent result. The preview returns course cost, first splits, and fuel target from the deterministic engine and the current course data model.
VDOT
49.1
Estimate
3:14:07
Course cost
+0:23
Fuel target
60 g/h
60 g/h needs a trained gut — practise it in training, never try new fuelling on race day. Your full plan tunes this to your experience.
First 5 km preview
full race locked
- km 14:40
- km 25:00
- km 34:38
- km 44:29
- km 54:37
First race free · then €7 Race Pass · no monthly subscription
Uses an approximate course model; verify final logistics against the official race packet.
Step 2 · Your full Tokyo Marathon plan
The preview shows the shape. The plan races it for you.
Course preview
Free
what you see now
- Difficulty score & course data
- Course-cost & toughest km
- Your first full plan free, ever
Race Pass
€7
one-time, this race
- Every km split, weather-adjusted
- Nutrition & fluid timeline
- Heat, wind & sun race tactics
- Danger zones + watch file (GPX)
- Race-week forecast & reminders
Annual
€19
per year, every race
- Everything in Race Pass
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- Re-plan as your fitness changes
No subscription required — one race is a one-off €7. See a full sample plan →
Continue with approximate course data →Course elevation
48 m total gain · 76 m loss · max 55 m, min 2 m.
Fly the course
Sun & shade
Sun in your eyes
17 km
Sun on your back
12 km
Side / overhead
13 km
From km 18 the sun sits high overhead — peak UV and radiant heat, so keep sunscreen on and run the shaded side of the road where you can.
Approximate — solar position from the route geometry and a 09:10:00 start (timezone estimated from longitude), for a mid-pack finishing time.
Signature sections
Tokyo Big Sight finish · km 41–42.195
Final stretch with a slight rise to the convention center finish line.
Aid stations
8 stations on course — plan your fueling around them.
Race overview
Tokyo is the flattest of the Asian World Marathon Majors and one of the better-organised races on the calendar. 95 m of cumulative elevation gain, all in small undulations through Shinjuku, Hibiya, Ginza, Asakusa, and the final stretch out to Tokyo Big Sight. Early-March temperatures (5–13 °C) are favourable. The course is well-suited to even pacing; the only psychological pinch point is the long out-and-back along Chuo-dori (km 16–28), where there are no major elevation changes but the headwind can pick up.
How hard is this course?
Reference table — how the Tokyo Marathon compares to a flat sea-level course for four typical fitness levels. Computed from the route profile, mean course altitude, and typical race-week climate (10 °C / 68 % humidity). Your personal strategy uses your VDOT, per-km splits, nutrition timing, and the typical climate baseline for this static sample; paid strategies use Open-Meteo when a verified race date is inside the forecast window.
| Runner | Flat-course finish | Tokyo Marathon finish | Course cost | Adjusted pace |
|---|---|---|---|---|
| Beginner (VDOT 35) | 4:16:08 | 4:16:38 | +0.2% | 6:04/km |
| Intermediate (VDOT 45) | 3:28:17 | 3:28:42 | +0.2% | 4:56/km |
| Trained (VDOT 50) | 3:10:41 | 3:11:04 | +0.2% | 4:31/km |
| Competitive (VDOT 60) | 2:43:24 | 2:43:43 | +0.2% | 3:52/km |
Reference nutrition
For a 70 kg runner finishing in 3:11:04 at 10 °C. Adjust to your weight and tolerance — these are ISSN-window targets, not prescriptions.
- Carbs / hour
- 60 g
- Total carbs
- 191 g
- Fluid / hour
- 640 ml
- Sodium / hour
- 500 mg
FAQ
How flat is Tokyo?
95 m of total elevation gain — comparable to Chicago. No climb is longer than 200 m.
What is the weather like?
Early March averages 5–13 °C with 50–60 % humidity. Wind off Tokyo Bay can be a factor near the finish.
Get your personalized strategy
The numbers above are samples. Sign up free and get the full Tokyo Marathon strategy from your VDOT, the current course model, Open-Meteo race-week forecast when available, and your nutrition preferences.
First race free · €7 per additional race · €19/yr for unlimited
Get my Tokyo Marathon strategyRelated races
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New to the marathon? Start with our marathon pacing strategy guide or run the VDOT calculator.