Of course, bike are optional, but if you have even only a little „biker-blood" in your veins, you won't be able to resist the opportunity to bike the Tierser Alpl Alpine Refuge on the „Stahlross".
The well-prepared forest trails from the Seiser Alm (Compatsch) / Alpe di Siusi (Kompatsch) via the Mahlknecht Hut or from Campitello in the Fassa Valley through the Duron Valley are especially well-suited for doing this.