Presidio Bay Trail

We start on Lincoln, drop down the Ecology Trail to the bay shore, then loop back up through the mixed forest of the Presidio’s interior — eucalyptus giving way to native oak as we climb. The 450 feet of gain is spread across two decent climbs, nothing steep enough to require hands, but enough to get the heart rate up with a loaded pack. Aim for 20–25 lbs if you’ve got a few rucks under your belt. Trail shoes recommended; paved sections in the back half. We’re back at Lincoln by 8:30.