Nagano Marathon
Nagano, Japan · Tuesday 20 April 2027
Nagano Marathon, held in mid-April in Nagano, Japan, is an annual event that celebrates the city's role as host of the 1998 Winter Olympic Games. This IAAF Bronze Label Road Race takes runners on a point-to-point course, starting at the Nagano Sports Park and finishing at the Nagano Olympic Stadium. The route passes iconic Olympic venues like the Zenk?-ji temple and the Aqua Wing, offering a mix of historical significance and natural beauty.
Difficulty Calculator
h
:m
:s
Adjusted Time
3:53:57
Time difference: -6.1 minutes compared to a flat, road, temperate course.
Course Details
Elevation Gain47m
Elevation High374m
Elevation Low339m
Weather Forecast
High18°C
Low10°C
Chance of Rain75%
How hard is Nagano Marathon?
Easyharder than 14% of marathons
Flattest / easiestHardest
On our difficulty model, Nagano Marathon plays about 1 minute faster than an average road marathon for a 3:30 runner. It ranks #992 hardest of 1150 marathons we analyse, and #15 of 15 in Japan. Use the calculator above to see the exact adjusted time for your own goal pace.
What will you run at Nagano Marathon?
Estimated finish times on this course versus the same effort on an average road marathon, based on its elevation, surface, and expected race-day temperature.
| Average-course time | On Nagano Marathon | Difference |
|---|---|---|
| 3:00:00 | 2:54:47 | −05:13 |
| 3:30:00 | 3:24:24 | −05:36 |
| 4:00:00 | 3:53:57 | −06:03 |
| 4:30:00 | 4:23:26 | −06:34 |
| 5:00:00 | 4:52:52 | −07:08 |
| 5:30:00 | 5:22:14 | −07:46 |
| 6:00:00 | 5:51:33 | −08:27 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Nagano Marathon 2027 Course Analysis
Nagano Marathon is a full marathon held in Nagano, Japan. It is scheduled for Tuesday 20 April 2027. The course is run on road surface with 47m of total climbing, with its high point near 374m above sea level. For registration and full race details, visit the official Nagano Marathon website.
Elevation Profile
This is a very flat course, with only 47m of total climbing and little change in altitude throughout. Flat profiles let you hold an even pace from start to finish, which makes this a fast, PB-friendly race.
Expected Race Day Weather
Based on historical weather data for April, the expected race day conditions are as follows. Near-ideal running temperatures are expected, ranging from 10°C to 18°C. This temperature range is widely considered optimal for marathon performance, allowing efficient heat dissipation without cold-related issues. There is a high chance of rain (75%). Runners should prepare for wet conditions, including appropriate footwear and clothing choices.
Surface Type: Road
Nagano Marathon is run on road surfaces, which provide the fastest and most predictable conditions for racing. Road courses allow for consistent pacing and are typically the best choice for a personal best.
Looking for an easier marathon or a tougher challenge? You can also compare Nagano Marathon against other marathons to find the right race for your goals.
Marathons of similar difficulty
If Nagano Marathon fits your goal, these courses play out about the same on our difficulty model.