Loop 645 Alsace Jura

Between Alsace and Swiss Jura

A real sporting challenge , this course is aimed at experienced cycle tourists. Why not do it over two days? Take a break to explore the cultural and heritage offerings of Delle, Porrentruy, Boncourt or even Brebotte.


Combining greenways (Eurovélo6, francovélosuisse, greenway of the Largue in Alsace) and country roads with a steep drop , this loop is the most difficult.


We like on the course

  • The Maison de la Nature in Altenach.
  • The Parc de Cigognes de Seppois.
  • The Parc à Bisons de Boncourt.
  • Porrentruy: museums, JURASSICA – Museum and botanical garden, the castle and the Secret Circuit . “
  • The Brebotte craft museum .


89 km






Touring cyclist, itinerant cyclists


Travel time

9:30 am (family); 4h00 (cyclist)


Recommended direction



Intended place of departure

  • Delle

Municipalities of the route

  • Boncourt
  • Danemarie
  • Delle
  • Brebotte
  • Altenach
  • Montreux-Castle
  • Porrentruy
  • Seppois