Leiden Half Marathon
Leiden, Netherlands · Tuesday 11 May 2027
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Difficulty Calculator
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:m
:s
Adjusted Time
1:44:43
Time difference: -0.3 minutes compared to a flat, road, temperate course.
Course Details
Elevation Gain60m
Elevation High10m
Elevation Low-3m
Weather Forecast
High25°C
Low12°C
Chance of Rain0%
How hard is Leiden Half Marathon?
Moderateharder than 34% of half marathons
Flattest / easiestHardest
On our difficulty model, Leiden Half Marathon plays about 1 minute slower than an average road half marathon for a 1:30 runner. It ranks #299 hardest of 450 half marathons we analyse, and #1 of 6 in Netherlands. Use the calculator above to see the exact adjusted time for your own goal pace.
What will you run at Leiden Half Marathon?
Estimated finish times on this course versus the same effort on an average road half marathon, based on its elevation, surface, and expected race-day temperature.
| Average-course time | On Leiden Half Marathon | Difference |
|---|---|---|
| 1:30:00 | 1:29:23 | −00:37 |
| 1:45:00 | 1:44:43 | −00:17 |
| 2:00:00 | 2:00:06 | +00:06 |
| 2:15:00 | 2:15:29 | +00:29 |
| 2:30:00 | 2:30:54 | +00:54 |
| 2:45:00 | 2:46:19 | +01:19 |
| 3:00:00 | 3:01:46 | +01:46 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Leiden Half Marathon 2027 Course Analysis
Leiden Half Marathon is a half marathon held in Leiden, Netherlands. It is scheduled for Tuesday 11 May 2027. The course is run on road surface with 60m of total climbing, with its high point near 10m above sea level. For registration and full race details, visit the official Leiden Half Marathon website.
Elevation Profile
This is a very flat course, with only 60m 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 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 Half 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 Half Marathon against other half marathons to find the right race for your goals.
Half marathons of similar difficulty
If Leiden Half Marathon fits your goal, these courses play out about the same on our difficulty model.
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