Highway 101 has three Morgan Hill exits.  The middle one, East Dunne Avenue, is the one you take to get to the park.  Heading south on 101, take the exit, turn left at the stop light, and cross over 101. Heading north on 101, take the exit and turn right.

You'll be heading east and climbing into the hills through residential areas for the first three miles. At the top of the first ridge of hills, when you come to a Y in the road, look for a sign that says "Henry W. Coe State Park, 10 miles." You'll bear right at the Y.

The road crosses a bridge and follows alongside Anderson Reservoir for a ways. Then it turns into a narrow, winding, scenic mountain road.

Note:

If you're going to be driving a large mobile home or pulling a trailer, keep in mind that the road to the park has narrow, almost one-lane sections and several tight hairpin turns and blind curves. If you're used to navigating narrow, winding roads and you drive cautiously, you shouldn't have any problems. However, if you've had little experience with such roads, you may want to reconsider your plans.