Grist Mill & Patapsco-Thru Trail

EASY 6 reviews
#23 of 30 trails in

Grist Mill & Patapsco-Thru Trail is a 2.5 mile moderately trafficked loop trail located near Patapsco Woods, Maryland that features a river and is good for all skill levels. The trail offers a number of activity options and is best used from March until October. Dogs are also able to use this trail but must be kept on leash.

2.5 miles
200 feet

dogs on leash

kid friendly



fly fishing


mountain biking

nature trips

trail running





wild flowers




historic site

20 days ago

I received flood alerts on my cell phone all night. l live right by the Patapsco Valley State Park. Due to the heavy overnight rainstorm and flood warnings I walked the Grist Mill in from the top of Ilchester Rd. I wasn't sure if the bottom at Avalon was flooded out. Water levels were super high and lots of debris on the trails. The railroad bed had stone laying in the trail and there were a few down trees.

1 month ago

Parts of the trail were very crowded and we had to step off the trail a few times to let mountain bikers pass by. The main trail was blazed with spray paint on nearby trees, but trails made by other hikers through the years make it a little difficult to follow in places. A lot of loud music was being played by people lounging at the river which reminded you how close to the city you actually are. Lot of good scenery and shade made the hike otherwise enjoyable.

2 months ago

2 months ago

85 Degrees but this Hike was mainly in the shade. Even though it was hot and dry out there is always one section of this loop that is always wet. On the Old River Rd. trail there is a section of drainage from the woods that always works it's way to the trail. It's right before you get to the dam. After you pass the dam, there are a lot of down trees. I am sure this area is never maintained. When you get to the top at Ilchester Rd. you will connect to the Grist Mill Trail. It's all flat and Paved. Lots of people having stream side cookouts and swimming. The parking lots were over crowded so the D.N.R. closed the park. Weekends are always packed this time of year. You better come early or you are Not getting in.

Wednesday, April 27, 2016

Thursday, November 20, 2014