Ultra Bielersee 50 km

The Ultra Bielersee 50 km is a single-day ultramarathon that follows a largely flat circuit around Lake Biel, including a notable detour onto the St. Petersinsel. The 2026 edition is scheduled for Saturday 16 May and starts at Lago Lodge Biel, offering a scenic lakeside course that is described by the organiser as largely flat and suitable for fast running. The route is waymarked and supported with a detailed Streckenverlauf map and a VP (aid station) PDF for exact logistics.

Runners benefit from eight staffed aid stations positioned around the route and the event imposes an 8-hour time limit to ensure those posts are staffed at the required times. Lago Lodge serves as the start and finish hub with on-site parking and shower/changing facilities, while Biel SBB station is a short walk away for public-transport access. Official timing and published results are provided and category prizes are awarded, with additional incentives for new course records as published by the organiser.