A continual 168 mile off road trail route combining the 95 Mile West Highland Way from Milngavie (near Glasgow, Scotland) to Fort William and the 73 mile Great Glen from Fort William to Inverness.  

The St Magnus Way is a pilgrimage route through mainland Orkney. Inspired by the life and death of St Magnus, Orkney's patron saint. It has a range of terrain to run from rough coastal, inland tracks, moorland, hill climbing to tarmac. Even a very short forest path (rare for Orkney)! A very good app accompanies the route and keeps you on track as you go. https://www.stmagnusway.com/advice/the-st-magnus-way-app

Running/Hiking/Biking route from Berlin Center to Bernau city goes along Panke river. 

Quite scenic route. 

There is a bike repair station directly in the middle of the route on 14th km.