Just follow the signs from town to Redwood Community Park. I like these trails. They are especially cool on rainy misty days. Fire roads and single track. Some good climbs and enough milage to get lost the first few times.
Redwoods always make for a nice scenic ride.
The park isn't huge, so just ride every trail there is. Mostly intermediate with some technical thrown in. Some good singletrack also. A better way to go is to drive another 45 min.