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Biel 100 km running days
![[Deleted User]](https://w8.vanillicon.com/814832c176e7f9ada6411a9e910d9c86_100.png)
Why not doing one of the oldest ultra marathon in the world. Alone, in pairs or in a 5 Team. One time you have to run the Biel 100km.
I did it already twice and cant wait for my third time this june.
More than welcome to help, if you have questions about the run 
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