Leiden Half Marathon
Leiden, Netherlands · Sunday 11 May 2025
A unique and special scene awaits at the Netherlands! Unlock something special that welcomes athletes. As the Leiden Marathon offers the best of athletic ability and all that's Dutch, explore what the journey can bring to you today. As a spot that provides unique excellence, you're asked to do one thing: explore. The beauty has the best potential.\nHere, you chart what's set to come. Each member comes to express something special! It has the power. As a journey where goals are made and the heart
Difficulty Calculator
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:m
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Adjusted Time
1:43:36
Time difference: -1.4 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%
Leiden Half Marathon 2025 Course Analysis
Leiden Half Marathon is a half marathon held in Leiden, Netherlands, scheduled for Sunday 11 May 2025. The course is run on road surface with 60m of total elevation gain, reaching a maximum altitude of 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 elevation gain across the full distance. The course ranges from -3m to 10m above sea level — a 13m elevation range that makes it one of the flatter races available. Runners targeting a personal best will appreciate the minimal climbing.
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 over the full distance. 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 marathon running. Road courses allow for consistent pacing and are typically the best choice for runners targeting a personal best time.
How Difficult Is Leiden Half Marathon?
Our difficulty rating for Leiden Half Marathon is calculated using a model that combines elevation gain, temperature impact, and surface type. Use the difficulty calculator above to enter your target finish time and see exactly how many minutes this course would add or subtract compared to a perfectly flat, cool, road-based half marathon. Faster runners and slower runners are affected differently by the same course conditions, so the difficulty is personalised to your pace.
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.