Leiden Marathon
Race Day Weather
Cool temps, shifting winds ahead
Runners will face a mild temperature range starting at 56°F and peaking at 60°F, with an average humidity of 68%. Wind will be a significant factor, with a tailwind early, shifting to headwinds from miles 6 to 16, then returning to a tailwind from miles 19 to 27. Runners should adjust their pacing strategy, conserving energy during headwind stretches and capitalizing on tailwinds in the latter stages.
Pace Calculator
Get forecast alerts for Leiden Marathon
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Get your personalized Leiden Marathon race plan
Weather-adjusted pacing, per-mile terrain splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide — all personalized to your goal and race-day conditions.
Race Info
The Leiden Marathon, established in 1991, starts and finishes at Vismarkt and takes runners through a stunning mix of historic city landscapes and sprawling countryside. The course is flat with an elevation gain of around 15 meters and features iconic landmarks like Pieterskerk, alongside traditional windmills and narrow, atmospheric streets. It's a beautifully organized race that gives you a feel for both urban and rural Netherlands.
Historical Weather
Temperature History
Range of temperatures during race hours for each year.
Detailed History
| Year | Conditions | Low / High | Rain | Dew Point | Score |
|---|---|---|---|---|---|
2025 | | 65°/76° | - | 42° | |
2024 | | 66°/78° | - | 54° | |
2023 |  | 57°/65° | - | 53° | |
2022 | | 64°/76° | - | 48° |