Toyako Marathon
Toyako, Japan · Tuesday 18 May 2027
The Toyako Marathon, held on May 18, 2025, in Toyako Town, Hokkaido, Japan, is a picturesque event that takes runners around the stunning Lake Toya. The course offers breathtaking views of the lake and surrounding mountains, providing a serene and beautiful backdrop for the race. With its well-organized logistics and enthusiastic support from the local community, this marathon is a must-do for those seeking a challenging yet enjoyable race experience amidst natural beauty.
Difficulty Calculator
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:m
:s
Adjusted Time
3:58:19
Time difference: -1.7 minutes compared to a flat, road, temperate course.
Course Details
Elevation Gain166m
Elevation High116m
Elevation Low87m
Weather Forecast
High13°C
Low10°C
Chance of Rain33%
How hard is Toyako Marathon?
Moderateharder than 33% of marathons
Flattest / easiestHardest
On our difficulty model, Toyako Marathon plays about 3 minutes slower than an average road marathon for a 3:30 runner. It ranks #770 hardest of 1150 marathons we analyse, and #8 of 15 in Japan. Use the calculator above to see the exact adjusted time for your own goal pace.
What will you run at Toyako 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 Toyako Marathon | Difference |
|---|---|---|
| 3:00:00 | 2:56:54 | −03:06 |
| 3:30:00 | 3:27:34 | −02:26 |
| 4:00:00 | 3:58:19 | −01:41 |
| 4:30:00 | 4:29:07 | −00:53 |
| 5:00:00 | 4:59:59 | −00:01 |
| 5:30:00 | 5:30:54 | +00:54 |
| 6:00:00 | 6:01:52 | +01:52 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Toyako Marathon 2027 Course Analysis
Toyako Marathon is a full marathon held in Toyako, Japan. It is scheduled for Tuesday 18 May 2027. The course is run on road surface with 166m of total climbing, with its high point near 116m above sea level. For registration and full race details, visit the official Toyako Marathon website.
Elevation Profile
With 166m of total climbing, this is a gently undulating course. The elevation changes are manageable for most runners and shouldn't greatly affect your pacing.
Expected Race Day Weather
Based on historical weather data for May, the expected race day conditions are as follows. Near-ideal running temperatures are expected, ranging from 10°C to 13°C. This temperature range is widely considered optimal for marathon performance, allowing efficient heat dissipation without cold-related issues. There is a moderate chance of rain (33%). Runners may want to prepare for wet conditions but shouldn't expect persistent rainfall.
Surface Type: Road
Toyako 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 Toyako Marathon against other marathons to find the right race for your goals.
Marathons of similar difficulty
If Toyako Marathon fits your goal, these courses play out about the same on our difficulty model.