Races Half marathon · Leiden, Netherlands
Leiden Half Marathon
Leiden Half Marathon is a flat half marathon in Leiden, Netherlands, held each May. The organiser calls the Leiden course flat and typically Dutch. It leaves the historic centre, crosses polder land and villages with canals and windmills, and finishes in the middle of Leiden. Mid-May in South Holland is usually mild, typically 7 to 17°C, with a fair chance of wind and showers. Flat courses like Leiden's reward metronomic pacing — the danger is going out faster than goal pace because it feels cheap early.
Page rebuilt 2026-11-14 · race facts not independently verified — confirm dates and entries on the official race site
When
May
next: Sunday 9 May 2027
Course
flat
Half marathon
Conditions
Mid-May in South Holland is usually mild, typically 7 to 17°C, with a fair chance of wind and showers.
Racing this course well
The organiser calls the Leiden course flat and typically Dutch. It leaves the historic centre, crosses polder land and villages with canals and windmills, and finishes in the middle of Leiden.
Flat courses like Leiden's reward metronomic pacing — the danger is going out faster than goal pace because it feels cheap early.
Getting a place
- How you get in
- Open entry: first come, first served
- Price
- €45 (2027 race)
Official Leiden Half Marathon site →Checked November 2026
Race day
- Next race
- Sunday 9 May 2027
- Start time
- 10:00
- Time limit
- 3 hours
- Also on the day
- marathon, 10k, 5k
Pick your goal for Leiden
Pace charts, weekly structure and timelines for the most common half marathon goals:
The date shown is the one the organiser has announced. Change it if yours differs.
Build your training around Leiden Half Marathon.
RunV works backwards from race day to today. Your plan adapts when life interrupts, and you approve every change. It does not adapt to this specific course — the pacing guidance above is where the course knowledge is.
Everything above stays free and complete — this is an optional next step, not a paywall.
Asked often
- When is the Leiden Half Marathon?
- The next Leiden Half Marathon is on Sunday 9 May 2027 in Leiden, Netherlands. It is held each May.
- Is the Leiden Half Marathon course flat?
- The organiser calls the Leiden course flat and typically Dutch. It leaves the historic centre, crosses polder land and villages with canals and windmills, and finishes in the middle of Leiden.
- How do I enter the Leiden Half Marathon?
- Open entry: first come, first served. Price: €45 (2027 race).
- How should I train for the Leiden Half Marathon?
- Match your preparation to Leiden Half Marathon's profile and the May weather, then protect consistency — with RunV Premium you can adapt your plan to fit your week, so one bad week never derails the block.
Not sure what to target? Predict your half marathon time from a recent race →
More half marathon races
Supplements research for this distance
Build for Leiden — around your actual life
RunV engineers your block backwards from race day in May — and adapts it when training doesn't go to script. You approve every change.
