From the north, take Interstate 5 south and exit at La Jolla Village Drive westbound. Turn left at the signalized intersection at Torrey Pines Road and follow it to the signalized intersection at La Jolla Shores Drive. From the south, take Interstate 5 northbound and exit at Ardath Road. Turn right at the signalized intersection at La Jolla Shores Drive, then turn left at the signalized intersection at Avenida de la Playa. Turn right on Camino del Oro. A 350 space parking lot (8 disabled spaces) can be found at the foot of Calle Frescota next to the lifeguard tower. In summer, this lot fills to capacity by mid-day. Limited on street parking may be available.
Here's a map showing where Mt. Soledad (Soledad Park) is located.
Best way to get around is by car or by bike if ther weather permits it and you're in shape.