Hälsingeleden (The Hälsinge Trail) is a 160 km trail from Los to Mosjön. 

https://www.svenskaturistforeningen.se/guider-tips/leder/halsingeleden/

https://www.sporthallen.nu/index.php/motionsspar-och-leder/haelsingeleden

The memorial route of "Operation Market Garden", from Lommel (Belgium) to Arnhem (The Netherlands) following the path the Allied forces took while trying to liberate The Netherlands during WWII. The route is a mixture of road, forest trails, and heathland, passing numerous monuments, military cemeteries and war museums.

The route is fully marked and maintained by OLAT, who also produce a guidebook (https://www.olat.nl/airbornepad)