London 100

London • EnglandUnited Kingdom

Saturday, 10/05/2025

Photo: London 100K

Description

​Imagine embarking on an extraordinary journey through the heart of one of the world's most iconic cities. The London 100 is an urban ultramarathon that invites you to experience over 100 of London's landmarks in a single, unforgettable run. Whether you're an experienced ultramarathoner or looking to push beyond traditional distances, this event offers a unique opportunity to explore the capital's diverse neighborhoods, hidden trails, and historic sites.

Starting and finishing from a central London race HQ, the course is divided into four distinct 25km sections, each showcasing a different quadrant of the city—north, south, east, and west. This design allows participants to discover areas of London they may never have encountered, all while enjoying the camaraderie of fellow runners and the support of well-stocked checkpoints positioned at strategic intervals.

For those seeking a shorter challenge, the event also offers London 50 (50km) and London 25 (25km) options, making it accessible to runners transitioning from marathons or half marathons to ultradistances. Regardless of the distance you choose, completing the course before midnight earns you the coveted London 100 medal, with the top 100 finishers securing a place among London's running elite.

Beyond the physical challenge, the London 100 is designed with accessibility in mind. Its central location ensures easy access for participants and supporters alike, minimizing the logistical complexities often associated with ultramarathon events. Whether you're aiming for a personal best, seeking a new adventure, or looking to experience London from a fresh perspective, the London 100 promises an unparalleled running experience.

To learn more about this remarkable event and secure your place on the starting line, visit the official London 100 website. Embrace the challenge, and become part of a community that celebrates endurance, exploration, and the vibrant spirit of London.​

Event Location

Address

Pimlico, London, UK

Accommodation

If you need a place to stay near the event, here you’ll find a selection of nearby hotels and holiday rentals.

Races / Distances

You have 9 days left to prepare for this event. The perfect running shoe for your new personal best is available at unbeatable prices in the Trophy Runners Deals!

25k Run

Distance: 25 km

Date: Saturday, 10/05/2025

Run Type: City Run, Road Run

Underground: Asphalt

Special Features: In a park, In the city, Many sights

50k Ultra Run

Distance: 50 km

Date: Saturday, 10/05/2025

Run Type: Ultra Marathon, Ultra Run

Underground: Asphalt

Special Features: In a park, In the city, Many sights

100k Ultra Run

Distance: 100 km

Date: Saturday, 10/05/2025

Run Type: Ultra Marathon, Ultra Run

Underground: Asphalt

Special Features: In a park, In the city, Many sights

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