Sparkasse 3-Countries Marathon

The Sparkasse 3-Länder-Marathon is a cross-border road running event around Lake Constance, presented on the official site as "Sparkasse 3-Länder-Marathon". The race weekend features a full marathon as the headline race together with a half marathon, relay (Marathonstaffel), quarter marathon, Nordic walking event and several youth and childrens races, all finishing in the Bodensee-Stadion in Bregenz. The course is AIMS-certified and described by the organiser as predominantly flat, largely following the lakeshore route and passing through Germany, Switzerland and Austria, which makes it notable for scenic lake views and international appeal.

The event is organised by SEG Sport Event GmbH under the Erste Bank Sparkasse Running brand and uses integrated chip timing (the timing chip is incorporated into the bib). The organiser publishes route maps, certification documents and a race timetable on the official website, and provides services including refreshment points every 5 km and post-race provisions. Entrants register online via the event portal and the organiser issues final race information and starter confirmations in the weeks prior to the race.