Rasselbock Backyard Ultra - Hardwick

About Rasselbock Backyard Ultra - Hardwick

Rasselbock Backyard Ultra - Hardwick The Rasselbock Backyard Ultra Harwick starting on 13 September 2025 is based in the stunning grounds of Hardwick Hall Estate in Chesterfield. A Backyard Ultra is a form of ultramarathon race where competitors must consecutively run a 6.71km / 4.16 mile course every hour, on the hour, until there is only one person left standing. The course runs through a mix of estate trails and farmland. Terrain is a mix of natural woodland, farmland tracks and a small amount of tarmac. Refer to the event website for the rules associated with this event. Off Road/Trail 1 x 6.71K lap per hour - Last one standing format

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