Glaubenbielen is a pass for people who like their mountains empty. It crosses a green saddle at 1,611 metres between Giswil in Obwalden and the Entlebuch valley in Lucerne, and the road is narrow, steep and often quiet, with long stretches where you will meet nothing but cows and the occasional cyclist. The scenery is gentle but big, with moorland, scattered spruce and an open sky.
The pass lies inside the Entlebuch biosphere reserve, a UNESCO-recognised landscape where high moors, forests and traditional farming have been protected together. The moors here are among the most important in Switzerland, wet, spongy places full of rare plants and insects, and the walking paths across them are carefully marked. It is not a landscape that shouts, and that is its appeal.
On the Giswil side, the road climbs from the shore of Lake Sarnen in a series of hairpins through forest, with views opening gradually over the lake and the mountains of Obwalden. It is steep in places, and the corners are tight, so take care on a loaded bike. At the top, the land opens into meadows and the road eases into a wide, rolling descent toward Sörenberg, a ski village that is quiet in summer. The surface is generally good but patched, and the shade can hold moisture late into the morning.
Giswil is a village of several thousand and the best place to fill up before you start, and Sarnen, a short ride away, is the bigger option. The pass is closed in winter, normally opening in late spring, and it is worth checking the conditions, because snow lingers at this altitude. Summer weekends bring more traffic, but early in the day the road is still your own. Take a warm layer and a camera.