2026 Season · Germany
ARC400
UltraOpen
- Date
- 18 September 2026 – 19 September 2026
- Location
- UnteruhldingenBaden-Württemberg · DE
- Distance
- ~400 km
- Elevation
- ~4,000 hm
- Entry fee
- from €120 (early bird) / €160
Self-supported ultra around Lake Constance through 4 countries (DE/AT/CH/LI); 7 checkpoints, free route choice, ride it in one push or with an overnight.