On 10 May 2026 the Leiden Marathon returns to the historic city of Leiden in the Netherlands for its 35th edition. Runners have a choice of the full marathon distance, the half-marathon, a 10 km, a 5 km fun run and a Kids’ run, making the event accessible to all levels. The course starts in Leiden’s old centre, loops through the scenic Dutch countryside with windmills and polder landscapes, then returns to a finish in the heart of the city. Known for being surprisingly flat and fast, the route is ideal both for personal bests and for enjoying the beauty of Dutch scenery. With volunteer-heavy organisation, festive atmosphere and a diverse field, the event captures both the local character and international appeal of running in the Netherlands.
Races
On 10 May 2026, the Leiden Marathon full 42.195 km race follows a flat, fast single-loop course through historic Leiden and nearby Dutch countryside, organised by the event team behind Leiden Marathon. It offers a scenic route past windmills, polders and charming villages, finishing in the heart of the city.
The Leiden Half Marathon 21 van Bunnig & Partners on 10 May 2026 delivers the same vibrant energy as the full marathon but in a swift, fast-paced 21 km package. With its flat course and cheering locals along the route, it’s the perfect spring race for runners seeking both speed and charm.
On 10 May 2026, the Leiden 10 van Zorg en Zekerheid brings together competitive and recreational runners for a spirited 10 km dash through the lively streets of Leiden. Organised with the same precision and passion as the longer races, it offers an excellent opportunity to chase a personal best on flat, scenic roads.
Also on 10 May 2026, the Leiden 5 Kilometer welcomes first-time participants, families, and fun runners to join the city’s festive racing weekend. With a short and friendly route that still captures Leiden’s beauty, it’s the perfect introduction to the marathon spirit in a vibrant, community-driven setting.
Weather based on historical averages.
FAQs
What is the Leiden Marathon?
How long is the Leiden Marathon?
Where does the Leiden Marathon take place?
What is the elevation gain of the Leiden Marathon?
How can I prepare for the Leiden Marathon?
How do I choose the right training plan for the Leiden Marathon?
On 10 May 2026, the Leiden Marathon full 42.195 km race follows a flat, fast single-loop course through historic Leiden and nearby Dutch countryside, organised by the event team behind Leiden Marathon. It offers a scenic route past windmills, polders and charming villages, finishing in the heart of the city.
The Leiden Marathon is 42km long.
The Leiden Marathon takes place in Leiden, Netherlands.
Runna classifies the Leiden Marathon elevation profile as Rolling.
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Leiden Marathon?
On 10 May 2026, the Leiden Marathon full 42.195 km race follows a flat, fast single-loop course through historic Leiden and nearby Dutch countryside, organised by the event team behind Leiden Marathon. It offers a scenic route past windmills, polders and charming villages, finishing in the heart of the city.
How long is the Leiden Marathon?
The Leiden Marathon is 42km long.
Where does the Leiden Marathon take place?
The Leiden Marathon takes place in Leiden, Netherlands.
What is the elevation gain of the Leiden Marathon?
Runna classifies the Leiden Marathon elevation profile as Rolling.
How can I prepare for the Leiden Marathon?
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the Leiden Marathon?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Leiden Half Marathon?
How long is the Leiden Half Marathon?
Where does the Leiden Half Marathon take place?
What is the elevation gain of the Leiden Half Marathon?
How can I prepare for the Leiden Half Marathon?
How do I choose the right training plan for the Leiden Half Marathon?
The Leiden Half Marathon 21 van Bunnig & Partners on 10 May 2026 delivers the same vibrant energy as the full marathon but in a swift, fast-paced 21 km package. With its flat course and cheering locals along the route, it’s the perfect spring race for runners seeking both speed and charm.
The Leiden Half Marathon is 21km long.
The Leiden Half Marathon takes place in Leiden, Netherlands.
Runna classifies the Leiden Half Marathon elevation profile as Rolling.
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Leiden Half Marathon?
The Leiden Half Marathon 21 van Bunnig & Partners on 10 May 2026 delivers the same vibrant energy as the full marathon but in a swift, fast-paced 21 km package. With its flat course and cheering locals along the route, it’s the perfect spring race for runners seeking both speed and charm.
How long is the Leiden Half Marathon?
The Leiden Half Marathon is 21km long.
Where does the Leiden Half Marathon take place?
The Leiden Half Marathon takes place in Leiden, Netherlands.
What is the elevation gain of the Leiden Half Marathon?
Runna classifies the Leiden Half Marathon elevation profile as Rolling.
How can I prepare for the Leiden Half Marathon?
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the Leiden Half Marathon?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Leiden 10km?
How long is the Leiden 10km?
Where does the Leiden 10km take place?
What is the elevation gain of the Leiden 10km?
How can I prepare for the Leiden 10km?
How do I choose the right training plan for the Leiden 10km?
On 10 May 2026, the Leiden 10 van Zorg en Zekerheid brings together competitive and recreational runners for a spirited 10 km dash through the lively streets of Leiden. Organised with the same precision and passion as the longer races, it offers an excellent opportunity to chase a personal best on flat, scenic roads.
The Leiden 10km is 10km long.
The Leiden 10km takes place in Leiden, Netherlands.
Runna classifies the Leiden 10km elevation profile as Rolling.
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Leiden 10km?
On 10 May 2026, the Leiden 10 van Zorg en Zekerheid brings together competitive and recreational runners for a spirited 10 km dash through the lively streets of Leiden. Organised with the same precision and passion as the longer races, it offers an excellent opportunity to chase a personal best on flat, scenic roads.
How long is the Leiden 10km?
The Leiden 10km is 10km long.
Where does the Leiden 10km take place?
The Leiden 10km takes place in Leiden, Netherlands.
What is the elevation gain of the Leiden 10km?
Runna classifies the Leiden 10km elevation profile as Rolling.
How can I prepare for the Leiden 10km?
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the Leiden 10km?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Leiden 5km?
How long is the Leiden 5km?
Where does the Leiden 5km take place?
What is the elevation gain of the Leiden 5km?
How can I prepare for the Leiden 5km?
How do I choose the right training plan for the Leiden 5km?
Also on 10 May 2026, the Leiden 5 Kilometer welcomes first-time participants, families, and fun runners to join the city’s festive racing weekend. With a short and friendly route that still captures Leiden’s beauty, it’s the perfect introduction to the marathon spirit in a vibrant, community-driven setting.
The Leiden 5km is 5km long.
The Leiden 5km takes place in Leiden, Netherlands.
Runna classifies the Leiden 5km elevation profile as Rolling.
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Leiden 5km?
Also on 10 May 2026, the Leiden 5 Kilometer welcomes first-time participants, families, and fun runners to join the city’s festive racing weekend. With a short and friendly route that still captures Leiden’s beauty, it’s the perfect introduction to the marathon spirit in a vibrant, community-driven setting.
How long is the Leiden 5km?
The Leiden 5km is 5km long.
Where does the Leiden 5km take place?
The Leiden 5km takes place in Leiden, Netherlands.
What is the elevation gain of the Leiden 5km?
Runna classifies the Leiden 5km elevation profile as Rolling.
How can I prepare for the Leiden 5km?
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the Leiden 5km?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
This event listing is for informational purposes only. Runna is not affiliated with, endorsed by, or sponsored by Leiden Marathon 2026 or Leiden Marathon. All event details are based on publicly available information and are provided solely to help users discover running events. Runna does not use any official logos, images, or proprietary content from this event or its organiser. Any trademarks or names mentioned are used descriptively to identify the event in a factual manner. For the most accurate and up to date information (including to register or purchase an entry to the event), please visit the Leiden Marathon 2026 website.
