Hexenturm-RTF und Radmarathon

Hexenturm-RTF und Radmarathon is a one-day cycling event in Idstein organised by RSV Idstein 1979 e. V. The programme combines a recreational RTF (Rundfahrt) offered as three tour options and a separate long-distance Radmarathon, all taking place on Sunday 16 August 2026. The organiser has introduced GPS-based navigation on all routes and provides downloadable GPX files (2025 routes currently linked) to assist riders in planning and navigation. Start windows are staggered, with the Radmarathon beginning early and the RTF tours starting slightly later.

The event uses Sporthalle am Hexenturm in Idstein as the RTF start location and operates signed control points alongside GPS navigation to verify passages. Routes and GPX files are provided on the organiser site; the Radmarathon includes several distance options up to 204 km with significant elevation and published start windows for each tour and the marathon. Checkpoints and feed stations are announced on course signs.

Pre-registration is available via the organiser's ticketshop (linked from the event page). Reduced rates apply to riders with a BDR-Breitensport licence; on-site registration incurs a surcharge. The organiser also references the original German event name “Hexenturm-Rundfahrt 2026” on the event page.