The very scenic Mølleådalen route. Lots of lake views on route.
Recommended for the great natur along the route with various surfaces consisting of a mix of single track, gravel and paved streets.

Can be done in both directions, but goes eastbound officially. GPX says 33km, official sources says around 37km.

Official site with PDF descriptions of the route: In Danish, no English available.

All of Squak is the shortest route that covers all of the publicly accessible single track trails in Squak Mountain State Park in Issaquah Washington. It is a mountainous 66km route, with 3895+ meters of elevation gain and loss, with multiple sustained climbs and descents.

The Big Sur Loop involves a lot of epic views and beautiful ecosystems. It starts at the Pine Ridge Trailhead, then in the clockwise direction takes the following order of trails: Pine Ridge, Big Sur, North Coast Ridge (dirt road closed to public vehicles), Terrace Creek, Pine Ridge.