Leiden Marathon

Leiden, Netherlands · May 9, 2027
partly-cloudy-day59°·64° high·Breezy·Dry
7
Register

Race Day Weather

partly-cloudy-day
59°at start
65° high
Breezy
Dry
Your goal
0:00:00

Comfortable temps

Mild 59°F temps at gun time mean comfortable early miles without overheating risk. Light winds shouldn't be a major factor for pacing.

Race day forecast available in 213 days
partly-cloudy-day9
partly-cloudy-day8
partly-cloudy-day7
partly-cloudy-day7
partly-cloudy-day7
partly-cloudy-day6
partly-cloudy-day6
partly-cloudy-day6
partly-cloudy-day6
partly-cloudy-day6
partly-cloudy-day6

Pace Calculator

Distance: 26.2mi
0:00:00
HH:MM:SS
Pace
—
Weather Adj.
—
Common Goals:

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.

Race Plan

Get your personalized Leiden Marathon race plan

True Effort pacing, weather-adjusted mile splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide — all personalized to your goal and race-day conditions.

Race Conditions
Weather Splits
Nutrition
Gear & Packing
T-Minus
Carb Tracker
Spectator Guide
Race Band

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.

Race weekend

Sunday, May 9
10:00 AMMarathon (26.2 mi)
Half Marathon (13.1 mi)
10K (6.2 mi)
5K (3.1 mi)

FAQ

When is the 2027 Leiden Marathon?

The 2027 Leiden Marathon will be held on Sunday May 9, 2027.

Is the Leiden Marathon a Boston Marathon Qualifier?

Yes, the Leiden Marathon is an official Boston Marathon qualifier.

What will the weather be like for the 2027 Leiden Marathon?

The forecast calls for a high of 62°F and a low of 46°F with a 10% chance of rain.

Historical Weather

Based on 5 years of data
Avg Temp
66°F
L:62° H:70°
RunScore
6
Conditions
Rain Freq
0%
0 of 5 yrs
Wind11mph
Dew49°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScore
2026
partly-cloudy-day
57°/60°-
7
2025
clear-day
65°/74°-
5
2024
clear-day
66°/75°-
4
2023
partly-cloudy-day
57°/64°-
6
2022
partly-cloudy-day
64°/74°-
5