From Wild Oaks Park, this trail follows a creek northwest until you come out on Green Valley Road near Hidden Acres Drive. From there, you could extend your hike indefinitely by crossing the street to the Browns Ravine Assembly Area and catchin the trail around Folsom Lake from there. Alternatively, from Wild Oaks Park you can go about 500 feet east to enter the New York Creek Nature Trail from Art Weisberg Park which can take you several more miles and connect to additional trails. In both csses you have to go along roads a little bit for the connection, so technically I'm just counting it as a max 1 mile trail still although you can incorporate it into as long of a hike as you like.

Parking for Wild Oaks Park appears to be roadside on El Dorado Hills Blvd or possibly also on Brittany Place with what looks like a possible lot at 4080 Brittany Place.