Westonbirt Arboretum Half Marathon
- When
- Sun, Sep 6, 2026, 4:00 AM
- Where
- Tetbury, GB
- Distances
- 5K · 10K · Half Marathon
- Terrain
- ROAD
- Typical weather
- Warm
- Organizer
- Relish Running
About
On 6 September 2026, the Westonbirt Arboretum Half Marathon sends runners on a two-lap 21.1 km tour of the National Arboretum’s stone forest paths, organised by Relish Running Races from the grounds at Westonbirt, near Tetbury. Largely flat with only gentle rises, this half showcases avenues of rare trees and sweeping woodland vistas in one of the UK’s most beautiful running settings.