21 kilometres, 601 metres of elevation gain and 1000 participants: these are the characteristic numbers of the 13th Seiser Alm Half Marathon on 5 July 2026. The starter's gun for the running event with start and finish in Compaccio is fired at 09.00 a.m. Surrounded by the Dolomites UNESCO World Heritage, the Seiser Alm Half Marathon is a unique experience and sporting challenge for both professional and amateur athletes. 

The Seiser Alm Half Marathon is limited to 1000 participants.

New this year: a kids’ run for ages 5–12, as well as the opportunity for all hobby runners to take part in the Just for Fun Run over 21 km without needing a club membership or a medical certificate!

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