There is limited parking at the Trail Head in Penmar. We did not want to finish at route 30 so we pushed a little farther to Ridge Rd where there is also limited parking. I broke this trip down to 2 days so my boys (8 and 10) wouldn't get burnt out. We hiked most of the day, played in the woods, splashed in some creeks, and then stopped for the night at the Antietam Shelter. Creek is clean and clear and a good source to refill from. Had I known earlier we would have stayed the night at the Tumbling Run Shelter just a mile further North. Tumbling Run is much nicer and very well cared for. This area is so large that overnight backpackers will not bother the through hikers. The rest of the hike was a good push and we finished tired and happy!