The Big Half 2025: Full route and road closures for this weekend's half marathon

The Big Half 2025 will once again take over the city this weekend, meaning several major roads will be closed for the event.

This Sunday (September 7), runners will take to the streets of London for the 13.1-mile course that weaves through London from Tower Bridge to the iconic Cutty Sark in Greenwich.

With its route set to pass through London’s Tower Hamlets, Southwark, Lewisham and Greenwich boroughs, road closures will be in place across the areas.

Here’s the whole route for The Big Half 2025, along with the London roads that will be closed for the occasion.

The Big Half 2025 full route

Starting right by the Swedenborg Gardens, runners will pass through Shadwell and Limehouse before getting to Canary Wharf.

From there the route loops back and around Wapping before crossing to south London via Tower Bridge.

Once over the iconic river crossing, runners will pound the pavements through Bermondsey into Rotherhithe.

Finally, the last stretch passes through Surrey Quays and Deptford before reaching the Cutty Sark in Greenwich.

Full list of road closures for The Big Half 2025

• [A100] Tower Bridge Approach (E1W ,EC3N ) (Both directions)
• [A100] Tower Bridge (E1W ,EC3N ) (Both directions)
• [A100] Tower Hill (EC3N ) (Both directions)
• [A1203] East Smithfield (E1 ,E1W ,EC3N ) (Both directions)
• [A1203] Limehouse Link (E14 ,E1W ) (Both directions)
• [A1261] Aspen Way (E14 ) (Both directions)
• [A100] Tower Bridge Road (EC3N ,SE1 ) (Both directions)
• [A1203] The Highway (E1 ,E1W ) (Both directions)
• [A126] Butcher Row (E1 ,E14 ,E1W ) (Both directions)
• [A1261] West India Dock Road (E14 ) (Both directions)
• Trafalgar Way (E14 ) (Both directions)
• North Colonnade (E14 ) (Eastbound)
• Upper Bank Street (E14 ) (Both directions)
• Bank Street (E14 ) (Both directions)
• South Colonnade (E14 ) (Westbound)
• Canada Square (E14 ) (Both directions)
• West India Avenue (E14 ) (Both directions)
• Westferry Circus (E14 ) (All approaches)
• Salter Street (E14 ) (All approaches)
• Limehouse Causeway (E14 ) (Both directions)
• Narrow Street (E14 ) (Both directions)
• Garnet Street (E1 ,E1W ) (Both directions)
• Wapping High Street (E1W ) (Both directions)
• [B107] Thomas More Street (E1W ) (Both directions)
• [A1206] Westferry Road (E14 ) (Both directions)
• [A200] Tooley Street (SE1 ) (Both directions)
• [A200] Jamaica Road (SE1 ,SE16 ) (Both directions)
• [A200] Evelyn Street (SE8 ) (Both directions)
• [A2209] Deptford Church Street (SE8 ) (Both directions)
• [A200] Creek Road (SE8 ) (Both directions)
• [A200] Lower Road (SE16 ,SE8 ) (Both directions)
• [B205] Brunel Road (SE16 ) (Both directions)
• Salter Road (SE16 ) (Both directions)
• [B205] Redriff Road (SE16 ) (Both directions)
• Quebec Way (SE16 ) (Both directions)
• Canada Street (SE16 ) (Both directions)
• Surrey Quays Road (SE16 ) (Both directions)
• [A200] Creek Road (SE10 ,SE8 ) (Both directions)
• [A200] Greenwich Church Street (SE10 ) (Northbound)
• [A200] College Approach (SE10 ) (Eastbound)
• King William Walk (SE10 ) (Southbound)
• [A206] Nelson Road (SE10 ) (Westbound)
• [A206] Greenwich High Road (SE10 ) (Both directions)
• [A206] Romney Road (SE10 ) (Both directions)
• [A206] Trafalgar Road (SE10 ) (Both directions)
• [A2211] Greenwich South Street (SE10 ) (Both directions)
• Haddo Street (SE10 ) (Both directions)

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