www.thebighalf.co.uk

The Big Half

London, East of England, United Kingdom

calendar_today 06 Sep, 2026

About the Event

Immerse yourself in London's most vibrant celebration of running and community at The Big Half, returning on Sunday, 6th September 2026. This dynamic half marathon course is a true cultural tour, starting at the iconic Tower Bridge and weaving through the diverse heart of four boroughs—Tower Hamlets, Southwark, Lewisham, and Greenwich. Experience an electric atmosphere fuelled by local crowds, live music, and the incredible spirit of London's running crews as you journey toward the grand finish by the historic Cutty Sark. More than just a race, it’s an inclusive festival of movement offering the half marathon, the team-focused New Balance Big Relay, and the accessible Big Mile. Whether you’re chasing a personal best or soaking up the unforgettable scenery, this event captures the very soul of the city. Secure your spot in this fast-selling, iconic London event and be part of a powerful, joyful running experience.

Races Offered

The Big Half

Sep 06, 2026

straighten

Distance — 21.1K

terrain

Type — —

timer

08:30

The Big Half Relay

Sep 06, 2026

straighten

Distance — 21.1K

terrain

Type — —

timer

08:30

The Big Mile

Sep 06, 2026

straighten

Distance — 1.6K

terrain

Type — —

timer

08:30

Weather History

These values represent the 3-year monthly averages for September in London.

thermostat Temperature

12.4° / 20.3°

wb_sunny Feels like

10.4° / 18.1°

light_mode Avg sunshine hours

8h 47m

water_drop Avg rainfall

3.2 mm

ac_unit Avg snowfall

—

air Avg wind speed

13.2 km/h (Gentle breeze)

opacity Sweat loss rate

Moderate

terrain Course conditions

Firm and slightly soft

sunny Max UV Index

Moderate (3.5)

humidity_mid Humidity

77.0%

wb_twilight Sunrise

06:36

nightlight Sunset

19:13

About London

Learn more about the host city, London.

Noisy, vibrant and truly multicultural, London is a megalopolis of people, ideas and frenetic energy. The capital and largest city of the United Kingdom sits on the River Thames in South-East England. Greater London has a population of a little over 9 million. Considered one of the world's leading "global cities", London remains an international capital of culture, music, education, fashion, politics, finance and trade. For the visitor, there is a seemingly endless choice of historical sites, shopping, museums, food, art galleries, nightlife, and activities. Once a Celtic settlement, London is a bustling city, where visitors come to experience the urban heritage and see its specific royal-themed attractions.