Weather
Climate Avg| Time | Temp | Dew Pt | Humidity | Wind | Conditions |
|---|---|---|---|---|---|
| Start | 37 – 44.9°F | 31° Crisp | 53 – 92% | 9 mph N | Partly cloudy |
| 8:00 AM | 38.5 – 49.2°F | 31° Crisp | 52 – 79% | 9 mph N | Partly cloudy |
| 9:00 AM | 40.2 – 53.4°F | 31° Crisp | 46 – 66% | 10 mph N | Partly cloudy |
| 10:00 AM | 43.3 – 55.9°F | 30° Crisp | 38 – 54% | 10 mph N | Partly cloudy |
| 11:00 AM | 44.2 – 57.8°F | 30° Crisp | 37 – 53% | 10 mph N | Clear sky |
| Finish | 45.1 – 58.9°F | 28° Crisp | 37 – 52% | 11 mph N | Clear sky |
Based on 3-year average for this date. Real forecast available in 218 days.
Elevation Profile
Course Stats
Course Breakdown
Shinjuku to Iidabashi
The slight downhill grade at the start feels fast. Resist the urge to bank time early.
Starting at the Tokyo Metropolitan Government Building in Shinjuku, the course heads east and slightly downhill through Iidabashi. It's a massive field and the first few kilometers are congested. The crowd support starts strong and stays consistent throughout.
Imperial Palace & Ginza
Past the Imperial Palace and through Ginza. Flat and fast with incredible crowd support.
The course passes the Imperial Palace moat and runs through the upscale Ginza shopping district. This is prime-time Tokyo marathon running: wide roads, dense crowds, and a festival atmosphere. These should be your most comfortable miles.
Shinagawa & Asakusa
Two out-and-back sections. The turnarounds are mentally tough. Focus on your own pace, not runners coming the other way.
Out-and-back stretches to Shinagawa in the south and then north past Asakusa and the Senso-ji temple. The turnarounds can be mentally draining but the temple scenery lifts the spirits. Stay steady through the second-half grind.
Toyosu Finish
Heading southeast toward the waterfront. The final stretch is exposed and can feel long. Commit to your pace.
The course heads toward the Tokyo Bay waterfront, finishing near Tokyo Big Sight. The final miles are along wider roads with good crowd support. The finish area is modern and well-organized. Push through the last 5K and soak in the finish.
Mile Splits
| Mile | Grade |
|---|---|
| 1 | -0.4% |
| 2 | -0.9% |
| 3 | -0.4% |
| 4 | -1.4% |
| 5 | +0.6% |
| 6 | -0.1% |
| 7 | +0.6% |
| 8 | +0.2% |
| 9 | -0.7% |
| 10 | +0.1% |
| 11 | +0.7% |
| 12 | -0.7% |
| 13 | -0.5% |
| 14 | -0.1% |
| 15 | +0.0% |
| 16 | +0.1% |
| 17 | +0.4% |
| 18 | +0.0% |
| 19 | -0.1% |
| 20 | +0.8% |
| 21 | -0.3% |
| 22 | +0.1% |
| 23 | +0.2% |
| 24 | -0.7% |
| 25 | +1.0% |
| 26 | +0.2% |
| 27 | -1.1% |
RM Difficulty Index
Race-Day Weather History
Race-morning conditions on this date over the past 5 years: median 43°F with a 25°F dew point and 14 mph wind. Heat has rarely been a factor.
| Year | Temp | Dew Pt | Wind | Rain | Sky |
|---|---|---|---|---|---|
| 2024 | 40°F | 27°F | 8 mph | — | Partly cloudy |
| 2022 | 44°F | 18°F | 16 mph | — | Partly cloudy |
| 2021 | 41°F | 25°F | 12 mph | — | Partly cloudy |
| 2019 | 47°F | 43°F | 15 mph | — | Drizzle |
| 2017 | 43°F | 23°F | 14 mph | — | Partly cloudy |
Morning conditions (race window) on the Tokyo Marathon calendar date each year, from the ERA5 reanalysis archive — the race’s usual slot, not necessarily each edition’s exact day.
Tokyo Marathon Pace Calculator & Race Plan
Tokyo is flat, well-organized, and usually runs in cool February weather. It's one of the easier World Majors to pace well because there are no hills to surprise you and the conditions are typically favorable. The course loops through central Tokyo with excellent crowd support throughout.
The main pacing challenge is the sheer size of the field and the congested first few miles. Our model accounts for the slow start and gives you splits that reflect what race day actually looks like rather than a theoretical even-pace plan.
Tokyo Marathon FAQ
When is the next Tokyo Marathon?›
The next Tokyo Marathon is on Sunday, March 7, 2027.
How long is the Tokyo Marathon?›
The Tokyo Marathon is 26.2 miles (42.195 km), the standard marathon distance. It runs in Tokyo, Japan.
How much elevation gain does the Tokyo Marathon have?›
The Tokyo Marathon has about 135 ft (41 m) of climbing and 220 ft of descent, with a maximum grade of 40.5%.
Is the Tokyo Marathon flat, downhill, or hilly?›
The Tokyo Marathon is a net downhill course, dropping 82 ft (25 m) from start to finish, with 135 ft of climbing along the way.
How hard is the Tokyo Marathon?›
Runner's Math scores the Tokyo Marathon 41/100 (Challenging) — #10 of 38 marathon courses in our library, ranked by modeled time cost. The profile costs about 1:21 versus a flat course for a runner at 4:00-marathon pace.
What's the weather usually like at the Tokyo Marathon?›
Over the past 5 years on this date, median race-morning conditions were 43°F with a 25°F dew point and 14 mph wind. Heat has rarely been a factor.