Friday, March 26, 2027
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This backyard ultra in Ardon, Switzerland, challenges participants to complete a 6.7 km loop every hour, with the INFINITY race continuing until only one runner remains. The EXPLORER offers a shorter discovery format of 7 loops (46 km). Held over three days in March, the event pushes endurance and mental strength in the scenic Swiss canton of Valais.
6.7 km loop course
Endless backyard format
Discovery option with 7 loops
Scenic Valais setting
Route
Other questions
A Backyard Ultra is an endurance running format where participants must complete a 6.7 km loop every hour. The race continues until only one runner remains.
The INFINITY race is unlimited, but for logistical reasons it may be limited to a certain number of loops (e.g., 38 or 62), which varies by edition.
The EXPLORER is a discovery format of a Backyard Ultra, limited to 7 loops (46 km).
Each loop has 20 metres of uphill and 20 metres of downhill.
The event takes place from 26 to 28 March 2027. The INFINITY race starts on 26 March and the EXPLORER on 27 March.
Ardon, Switzerland
Friday, March 26, 2027
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