The Glacier Trail is an easier trail with long sections of non-technical riding.
It offers another shorter loop with Rock Lake trail and connects with the Patsy Lake trail.
It begins as an easier singletrack at marker N8 on the Rock Lake trail. When you reach marker N10 on Rock Lake Road), Glacier follows an active (as of 2018) logging road and the trail is kind of a mess. I would suggest to take the Glacier Singletrack Alternative just a short distance to the south along Rock Lake Road. Either will take you to marker N11.
At marker N11, it's more easy singletrack to N12 and then a grassy doubletrack N13 on Patsy Lake trail.
Glacier is easier than Rock Lake Trail but the terrain is similar with lots of small lakes, dense forest, and swarms of mosquitoes.