Utica-Union Byway

Total Miles


2,195.56 ft


0.75 Hours

Technical Rating



Best Time

Summer, Fall

Trail Overview

A dirt, granite rock route that gets your tires off the pavement and onto a dirt byway for a mile over to Utica/Union Reservoirs. You will encounter some deep water-type bars and two small rock gardens. The trail is one vehicle wide, Jeep-sized, and there are several primitive camp spots along the way. No low clearance vehicles-high clearance only. 4WD may be needed in spots as well as 4-low to help your vehicle out in the rock garden (depending on your gearing). There's nothing really hard and it's a great beginner route.


This route is closed come winter and opened back up per the USFS discretion. There are two small rock gardens to test your navigational skills-nothing hard, but a great short beginner's route. Depending on your gearing, just use 4-low to help your vehicle out. You may or may not need 4WD in spots due to loose gravel or mud/snow. There are a few downed pines but the route has been redirected around them. If you encounter any downed trees or roadblocks on this route, help out by moving them to the side. This is a great route to meander through a pine forest on your way up to Utica/Union Reservoirs as well as the Slick Rock 4WD route. Only street-legal vehicles are allowed. Pack In, Pack Out, Leave No Trace, Tread Lightly ethics apply at all times. Check the Calaveras Ranger Station at Hathaway Pines on the way up or online for Motor Vehicle Use Maps as well as campfire use restrictions and a permit.


A lot of OHV routes in this forest were once old log skidder trails as well as wagon routes.

Technical Rating


Status Reports

There are no status reports yet for this trail.

Access Description

In Calaveras County, head east on Highway 4 to the signed Spicers Reservoir Road in the Stanislaus National Forest. Follow the road to the route start described here. Always do your own mapping to any trails so you are familiar with how to get there.

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