Mission Trails Regional park contains Cowles Mountain, the highest point in the city of San Diego. At the foot of the mountain, it seems like an impressive climb, but when you actually hike up, it's actually not too bad. It's roughly 1.5 miles to the top, for an elevation of 1592 feet at the top. The view improves as you're climbing up. At the top, you have a 360 degree view of the surround area. On a clear day, you can see out to the Pacific Ocean. For some good exercise, I definitely recommend this hike.