The presidio was an army post for over 200 years. Today many tourists visit the military buildings to explore the architecture, national cometary, airfield, forests, or neighboring beaches. Just a quick walk from the Golden Gate Bridge it is a great addition to any day out in San Francisco.
More of a walk than a hike. There's a ton of other tourists, but it's an amazing trail that you MUST go on if you're near the golden gate. Beautiful scenery and picture spots. My favorite parts were the walk to Marshall's beach and the sand ladder. These are somewhat off the trail so make sure you take these detours
This route can be a run, walk, bike, or drive. However you choose to explore it, the views of the Golden Gate bridge and the Pacific are excellent. I walked it with the pups and made a loop out of it. Some things you may want to explore on or near this route include the World War ll Memorial, Immigrant Point, the Sand Ladder down to Baker Beach, and the various buildings, batteries, and overlooks along the way. I parked in East Battery (paid parking) just East of the bridge but there is plenty of free parking West of the bridge in several places along Lincoln Blvd, as well as at Baker Beach. Next time, I'd prefer to run or bike it.