Leiden Marathon

Running and walking return to the historic streets of Leiden on May 9 and 10, 2026. The 35th edition of the Leiden Marathon starts and finishes in the city center — with the iconic Koninginnelaan as the launch point for the full marathon, half marathon, and 10 km, while the 5 km and Kidsrun take off from the Johnson & Johnson Park at the Garenmarkt.

Event Logistics & Participant Information:

• Half marathon (21 km) is sold out. No more starting numbers available.
• Full marathon (42 km), 10 km, 5 km, and Kidsrun still open for registration.
• Race pack pickup and starting number collection details available via the marathon agency.
• Course highlights: Leiden’s historic city center, canals, and surrounding polder landscapes.
• Five distances across two days: Saturday night 5 km + Kidsrun, Sunday full marathon, half, and 10 km.
• All races finish at the Vismarkt (except the 5 km and Kidsrun, which finish at Garenmarkt).
• Organized by a board + marathon agency + over 1,100 volunteers.
• SWIS is the new main sponsor of the full marathon.
• Free Kidsrun for children — no registration fee.
• Results from 2025 available. Q&A section on the website for common questions.
• Newsletter signup available for updates.

Atmosphere & History:

• 35th edition of one of the Netherlands’ most scenic city marathons.
• “It was a great experience, ran my first marathon through beautiful Leiden, I’ll be back next year” — Mike.
• Saturday evening 5 km night run through the city adds a unique festival feel.
• Spectator‑friendly courses with multiple cheering points along canals and narrow streets.