Brittany may not have much climbing, but has rolling hills which are sometimes classified in the flat stages of the Tour de France. In 2021 Bretagne was host to the Grand Depart, the first 3 stages of the TDF.
The best, hardest, most scenic, and epic road bike climbs of Brittany can be viewed on this page via the map (zoom in to view climbs in particular areas), by Climb Cards (photo and stats) or by a detailed list of the climbs that can be arranged in metric or imperial units by difficulty, distance (longest climbs in the area), altitude gained, highest elevation (highest summit), average grade (sort the grades by varying distances), lowest start point, etc. Click on "Climb Page" to jump to the detail page for that particular bike climb. This page provides an excellent and comprehensive summary of the top, hardest and best bicycling climbs in Brittany.
The top bike climbs, cols, and côtes in Brittany are: