Greenwich Tunnel 10km 2026
The Greenwich Tunnel 10km is back for 2026! This unique event offers a "once in a lifetime" opportunity to run under the River Thames in a quirky evening race, designed for those who enjoy both a physical and mental challenge.
The race starts in the historic and beautiful surroundings of Greenwich, London, right next to the iconic Cutty Sark. The run begins inside the Greenwich foot tunnel and heads towards the Mudchute exit, underneath the River Thames. Participants will complete 27 laps of the tunnel to finish this mentally tough challenge!
All finishers receive a medal, water, and a snack. Race times and finish positions are published within a day of the event.
On race day, number collection is available at a registration desk that opens an hour and a half before the race. The start uses a staggered format from the descending steps, with 10-second intervals between runners.
Organiser Information
Organiser: Run Happy Run Healthy
Venue: Next to The Cutty Sark, King William Walk, London, SE10 9HT, United Kingdom