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Backyard ultras in the UK
One lap every hour until one runner is left. No fixed distance, so the usual filters do not apply: what matters is the lap profile and the field size.
Hilliness
Entry mechanism
South Downs Way 100 & 50km
Matterley Bowl, near Winchester · South Downs · Centurion
12 Jun 2027 to 13 Jun
Entry details as published by the organiser, checked 15 August 2026.
The Montane Lakeland 50 & 100
Coniston · Lake District
23 Jul 2027 to 25 Jul
Entry details confirmed with the organiser on 14 August 2026.