Grass River Provincial Park — Iskwasum Lake to Reed Lake Mining Portage Road

The Grass River country doesn’t care about your schedule. This route threads north from the Highway 39 corridor into Grass River Provincial Park, following old logging and mining supply roads that once served the Reed Lake gold operations active through the mid-20th century. The road surface alternates between packed gravel and soft clay shoulders — the clay sections turn greasy after rain and will test your traction management early. Iskwasum Lake sits roughly mid-route and is worth the stop: the walleye fishing is legitimate and the lake itself sits in a bowl of black spruce and exposed Canadian Shield rock that feels genuinely wild. Watch the culverts near the Reed Lake end; several are undersized and back up spring melt badly, leaving axle-deep mud crossings that persist well into June.

This is a high-clearance gravel route — a capable 4×4 with all-terrain tires handles it in summer, but a locker front or rear helps through the clay sections post-rain. Bring two spare tires; the sharp Shield rock chews sidewalls. Fuel in Flin Flon before you go, roughly 80 km south. Cell service is zero. Dispersed camping is permitted throughout the provincial park. Best window is late July through early September after the clay dries. No formal permit required, but register your trip with someone — the nearest help is a long drive out.