The Double TCS London Marathon 2027
The Double TCS London Marathon follows the iconic 26.2-mile London route from the Greenwich and Blackheath start area through London to the Westminster finish area. The same route will be used on both days of the 2027 Double.
About The Double TCS London Marathon 2027
The Double TCS London Marathon 2027 takes place on Saturday 24 and Sunday 25 April 2027.
For 2027 only, the TCS London Marathon will become a unique two-day event, welcoming approximately 100,000 participants across the weekend. Participants on both days will follow the same iconic 26.2-mile route through London.
A One-Off Two-Day Format
The 2027 Double is a special one-off change to the traditional London Marathon format. The event will take place across Saturday 24 and Sunday 25 April, creating two days of marathon racing, mass participation, charity activity and community celebration.
The two-day format will not become the permanent annual format of the TCS London Marathon. London Marathon Events describes the Double as a unique event for 2027 only.
Elite Race Schedule
The elite races are divided between the two days of the Double.
- Saturday 24 April: Elite men's and elite men's wheelchair races, together with the male Championship and Good for Age races.
- Sunday 25 April: Elite women's and elite women's wheelchair races, together with the female Championship and Good for Age races.
The mass events on both days will include a mixed field of male, female and non-binary participants.
The Marathon Route
The same iconic marathon route will be used on both days. The course starts in the Greenwich and Blackheath area and continues through south-east and central London before reaching the finish area in Westminster.
Participants pass major London landmarks and neighbourhoods along the 26.2-mile route, creating a major citywide sporting and community experience.
100,000 Participants
The Double will welcome approximately 100,000 participants across the two days, making the 2027 edition substantially different from the traditional one-day format.
Participants will be allocated to either Saturday or Sunday and cannot take part in the in-person marathon on both days.
Sport, Charity and Community
The 2027 Double is designed as a citywide celebration of sport, charity and community. London Marathon Events is working with charities, community organisations, schools and other partners as part of the wider weekend.
The expanded event also provides additional opportunities for charitable fundraising and community participation across London.
Family and Community Activity
The wider 2027 Marathon Week includes activities designed to involve children, families and communities. The TCS Mini London Marathon is scheduled for Friday 23 April 2027, before the two-day marathon weekend.
London Marathon Events has also announced additional opportunities for schools and London boroughs to participate in the 2027 event.
Sustainability
Sustainability is part of the wider approach to the 2027 event. Participants have been given choices relating to finisher rewards, including whether they wish to receive a finisher medal and T-shirt when confirming their place.
Visitors and participants should consult the official London Marathon information for the latest guidance on travel, waste, event operations and sustainability initiatives.
Running Show
The TCS London Marathon Running Show is planned to take place at ExCeL London from 20–24 April 2027. It forms part of the wider Marathon Week surrounding the Double.
Participation and Entry
The 2027 entry process includes several established routes to participation, including the ballot, charity places, Good for Age, Championship, British Athletics Clubs, international participation and places for participants with disabilities.
The main 2027 ballot has already been drawn. Participants who were successful through the ballot were allocated an event day, while additional charity and other entry opportunities may be available through official channels.
Marathon Timing
The official 2027 information currently indicates that the Saturday event is likely to start at approximately 09:00, while the Sunday event is likely to start at approximately 09:30. Final participant wave times will be communicated directly to participants.
On Saturday 24 April, the finish line on The Mall will close at 17:30. On Sunday 25 April, the secondary finish line in Green Park will close at 23:59:59.
Official Event Information
Event: The Double TCS London Marathon 2027
Date: 24–25 April 2027
Location: London, United Kingdom
Start: Greenwich / Blackheath
Route: 26.2 miles from Greenwich to Westminster
Participants: Approximately 100,000 across two days
Organizer: London Marathon Events
Official Website
Visit the official TCS London Marathon website
Biskoon Editorial Note
Biskoon lists The Double TCS London Marathon 2027 as a curated global event for discovery and informational purposes. Biskoon is not the organizer, host or representative of London Marathon Events.
Entry, participant allocation, start waves, route arrangements, access requirements, event-day instructions and other participation details should be confirmed through the official London Marathon Events channels.
Last verified: October 2026
Itinerary
Day 1 – Men's Marathon and Saturday Events
09:00 - 17:30
The first day of the Double features the elite men's and elite men's wheelchair races, male Championship and Good for Age races, and the Saturday mass participation event. The finish line on The Mall closes at 17:30.
Day 2 – Women's Marathon and Sunday Events
09:30 - 23:59
The second day features the elite women's and elite women's wheelchair races, female Championship and Good for Age races, and the Sunday mass participation event. The secondary finish in Green Park closes at 23:59:59.
FAQ
The 2027 Double takes place on Saturday 24 and Sunday 25 April 2027. It is a one-off two-day format for 2027.
London Marathon Events expects approximately 100,000 participants across the two days.
Yes. The official 2027 FAQ confirms that the same 26.2-mile route will be used on both days, running from Greenwich towards Westminster.
The elite men's and men's wheelchair races take place on Saturday 24 April, while the elite women's and women's wheelchair races take place on Sunday 25 April. The corresponding male and female Championship and Good for Age races are also split between the two days.
No. Participants can take part in the in-person marathon on only one day. The official FAQ states that participants cannot take part on both Saturday and Sunday.
The official information currently says the Saturday event is likely to start at 09:00, with the finish line closing at 17:30. The Sunday event is likely to start at 09:30, with the secondary finish in Green Park closing at 23:59:59. Final participant wave times will be confirmed to participants.
The main 2027 ballot has already been drawn. London Marathon Events currently identifies other participation routes including charity places, Good for Age, Championship, British Athletics Clubs, international participation and places for participants with disabilities. Official availability should be checked through London Marathon Events.
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