Leiden Marathon
Leiden, Netherlands · Tuesday 11 May 2027
Leiden Marathon is a picturesque event held annually in Leiden, Netherlands. The race features a flat and fast course that combines the best of the city landscapes and the green countryside in the Green Heart. Starting in the heart of ancient Leiden, a city steeped in history and the birthplace of Rembrandt, the course takes runners on a sightseeing trip through nine beautiful villages.
Difficulty Calculator
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:m
:s
Adjusted Time
4:05:13
Time difference: +5.2 minutes compared to a flat, road, temperate course.
Course Details
Elevation Gain175m
Elevation High8m
Elevation Low-6m
Weather Forecast
High25°C
Low12°C
Chance of Rain0%
How hard is Leiden Marathon?
Difficultharder than 61% of marathons
Flattest / easiestHardest
On our difficulty model, Leiden Marathon plays about 8 minutes slower than an average road marathon for a 3:30 runner. It ranks #443 hardest of 1150 marathons we analyse, and #4 of 12 in Netherlands. Use the calculator above to see the exact adjusted time for your own goal pace.
What will you run at Leiden 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 Leiden Marathon | Difference |
|---|---|---|
| 3:00:00 | 3:01:20 | +01:20 |
| 3:30:00 | 3:33:12 | +03:12 |
| 4:00:00 | 4:05:13 | +05:13 |
| 4:30:00 | 4:37:24 | +07:24 |
| 5:00:00 | 5:09:43 | +09:43 |
| 5:30:00 | 5:42:10 | +12:10 |
| 6:00:00 | 6:14:44 | +14:44 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Leiden Marathon 2027 Course Analysis
Leiden Marathon is a full marathon held in Leiden, Netherlands. It is scheduled for Tuesday 11 May 2027. The course is run on road surface with 175m of total climbing, with its high point near 8m above sea level. For registration and full race details, visit the official Leiden Marathon website.
Elevation Profile
With 175m 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. Moderate temperatures between 12°C and 25°C are expected. While comfortable for most runners, those targeting fast times should pay attention to hydration, as these temperatures can impact performance on race day. There is a low chance of rain (0%), so dry conditions are likely.
Surface Type: Road
Leiden 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 Leiden Marathon against other marathons to find the right race for your goals.
Marathons of similar difficulty
If Leiden Marathon fits your goal, these courses play out about the same on our difficulty model.
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