This open space area is close to Silicon Valley cities and is very popular. On weekends it can be hard to find a parking spot especially in early morning. I usually take this trail during the week when I can get a morning off and the crowds are thinner. The PG&E Trail in Rancho San Antonio Park gets its name for the electrial towers that you follow straight up the hill. This road starts at the lower parking lot and climbs around 1500 feet in 3.5 miles. If you just want a quick workout take the trail up to the vista point, sit on the bench for awhile and then turn around and retrace your steps. You will climb another 300 feet for a total hike of 7 miles and 1800 feet. If you prefer a loop, continue on the upper meadow trail to the six corners and take the Wildcat Canyon Trail to the Rogue Road and back out through the Farm. I usually like to bypass the Farm because it is crowded with baby strollers and slow walkers. There is a bypass trail a little north of the Farm. This loop add about a mile to the hike. Total 8 miles and 1500 feet. Bathroom located at main parking lot. Park is off of Foothill Expressway from 280.