The London Marathon is one of the most famous road races in the world and one of the most exciting days to be in the British capital. Every spring, tens of thousands of runners take to the streets, while millions more line the route to cheer them on, creating a festival-like atmosphere across the city.
If you’re visiting London around marathon weekend, here’s everything you need to know: when the London Marathon takes place, which landmarks the route passes, and how the city is affected on the day.
When Is the London Marathon?
The London Marathon is typically held in April, on a Sunday. Exact dates vary year to year, but it usually falls in mid to late April, marking one of London’s major spring events. For 2026, the marathon takes place on Saturday 26th April.
Because it’s such a popular international race, accommodation and attractions can book up early, particularly in central London.
The London Marathon Route: Iconic Landmarks Along the Way
One of the reasons the London Marathon is so special is its route. Runners pass some of the most recognisable sights in the UK, making it just as memorable for spectators as for participants.
The race begins in Greenwich, an area rich in maritime history, before passing the striking outline of the Cutty Sark, one of the earliest and most atmospheric landmarks on the course. Runners then head west toward Tower Bridge, widely considered the most iconic viewing point, where crowds gather on both sides of the Thames for dramatic photos and an electric atmosphere. From there, the route continues through the modern skyline of Canary Wharf, offering a sharp contrast between historic and contemporary London. In the final miles, runners follow the River Thames along the Victoria Embankment, passing landmarks such as Big Ben and the Houses of Parliament, before finishing on The Mall, directly in front of Buckingham Palace. For visitors, this creates a rare opportunity to see many of London’s headline sights in a single day, all brought to life by the energy of the event.
For visitors, this means incredible photo opportunities and a rare chance to see London’s landmarks brought together in one continuous journey.
How does it affect travel in London?
If you’re eager to make the most of your trip to London during this time, it’s always best to be prepared for any interruptions to your travel and sightseeing.
Road closures
Large parts of east and central London are closed to traffic for most of the day, typically from early morning until late afternoon. For the full map and details, click here for the official London Marathon Road Closure Leaflet for 2026.
Public transport
The London Underground runs as normal, though some stations may be busier than usual and a small number of stations close near the route for crowd control.
Buses will also be busier and subject to road closures/diversions, so be sure to check on the best way to get to your destination via the Transport for London website.
Sightseeing & attractions
Most major attractions remain open, but do check before starting your journey towards them and remember that some areas are easier to reach on foot than by car or bus with the route causing traffic diversions.
Can You Still Sightsee on Marathon Day?
Absolutely! And in many ways, it’s a fantastic day to be in London.
The crowds are energetic, the atmosphere is upbeat, and the city feels alive. The key is planning your route carefully and allowing extra time to move around.
Many visitors choose to focus on areas outside the direct route or combine sightseeing with watching the race at landmark locations like Tower Bridge or Westminster.
Guided sightseeing tours can be especially helpful on marathon day, helping visitors navigate temporary closures while still experiencing London’s highlights.
Is it worth experiencing as a visitor?
Even if you’re not running, the London Marathon is a unique cultural event – a blend of sport, charity, and community spirit that gives visitors a memorable insight into life in the capital.
If your trip coincides with marathon weekend, embrace it: plan ahead, soak up the atmosphere, and enjoy seeing London at its most vibrant.
