El Cajon Mountain
Distance: 11 miles
If you’re looking for a good workout with a great view, El Cajon Mountain is for you. Known as one of the most challenging hikes in SD, the trail follows an old mining road that both ascends and descends for most of the way up to the peak at 3,675ft. Which means you’ll be going up and down all the way back down the mountain as well, so expect some burning quads. The trail is closed in August due to extreme summer temperatures, so be sure to bring plenty of water if you want to attempt this trail in the warmer months.
New hiking trails in Black Mountain
Distance: 1.5 miles
Open Space Park has just that, 2,352 acres of open space to explore in the Rancho Peñasquitos area. There are seven or eight hiking and biking trails all over the area, and they’ve just recently added a mile and a half of new trails connecting the two sides of the park from the Glider Port Trailhead to Miner’s Ridge Trailhead.