Trail Overview

This is a very easy gravel forest service road starting in St. Ignace near Castle Rock and heads west into Hiawatha National Forest towards Round Lake. The trail is wide enough for 2 vehicles in most places and has many offshoots and campsites to explore. The route starts on F.S.R. 3104 and jumps onto F.S.R. 3105 continuing towards Round Lake.

Photos of Castle Rock to Round Lake

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Difficulty

This is a well-traveled gravel Forest Service Road that appears to be maintained. It's wide enough for 2 vehicles in most areas.

Technical Rating

Jesse Mills

Sep 06, 2025

2011 Ford F-Series

Open

Matt Garner

Jul 26, 2025

2022 GMC Sierra

Open

Normal

Bridge is completed and open. There are still signs that say the road is closed going to the bridge and heavy equipment still there but nothing is blocking the bridge. It is paved on both sides of the bridge with it being redone.

Michael Helmer

Jul 03, 2025

Temporarily Closed

Ridge is out and working on it

Craig Travis

Jun 19, 2025

2024 Ford Ranger

Temporarily Closed

Trail Restoration

Paul Petan

Jun 06, 2025

2020 Toyota 4Runner

Temporarily Closed

Trail Restoration

Bridge is under construction, west end of trail. No passage for now

Jake Olson

Dec 30, 2024

2017 Jeep Wrangler

Open

Snow/Ice

Beautiful road, but extremely icey/rutted when I was driving it. Very fun if you don't mind sliding around a bit.