COVID-19: At REI, we encourage you to get outside responsibly. Stay local, avoid recreational travel, practice social distancing and check ahead for area and facility closures. Learn More
Trail Run Project Logo

Merryman Trail



8.8 mile 14.1 kilometer loop
94% Runnable


Ascent: 918' 280 m
Descent: -918' -280 m
High: 486' 148 m
Low: 242' 74 m


Avg Grade: 4% (2°)
Max Grade: 22% (12°)


Driving directions Take a virtual tour
Zoom in to see details
Map Key

The main trail that make up the network known collectively as the Merryman Trails.

John Marciari

Features Fall Colors · Lake · River/Creek · Views · Waterfall


Probably the most diverse terrain, and maybe the best of the various loops around Loch Raven, this trail has it all: singletrack along the lake, a mix of singletrack and fire road up on the ridges, different types of woods, some climbs, good views, etc.

Need to Know

Many ways to add loops or extra climbs (e.g. the long climb from the reservoir up along the power line) make it easy to stretch this loop into a longer or tougher run.


The map shows the main trails that make up the network known collectively as the Merryman Trail: trail access at Dulaney Valley Rd just south of the bridge, or at Pot Spring Rd, or at Warren Rd. There are two main routes, a singletrack closer to the lake shore and a fire road higher up on the hill, with various connecting trails between and some side trails also possible. The singletrack is flatter, but twists and turns more, whereas the fire road is straighter, but with hills.

Merryman is more challenging, and less-crowded than the trails on the southern part of Loch Raven (i.e. those accessed from the trailhead near Seminary Rd).

Run this trail?

We need help with the following missing trail information:

Flora & Fauna, Runner Notes, History & Background

Rate This Run

Rate Quality

   Clear Rating

Rate Difficulty

Share This Run

Check In


Aug 11, 2018
Allie Passarello
trail overgrown in parts, didn’t do the whole thing 5.1mi
Apr 28, 2018
Kelcy Newell
Didn’t do the whole thing, but beautiful trail 6mi
Mar 9, 2018
Shawn Soviak
The blazes don't do a very good job of letting you know where trails start, turn, split, etc. otherwise beautiful, fun, mildly technical running. 5mi
Jul 3, 2017
Tommy Rumley
Jul 1, 2017
Jason Li
Dec 27, 2016
Brian Kent
Dec 26, 2016
Brian Kent
7.2mi — 1h 35m

Trail Ratings

  3.6 from 9 votes


  3.6 from 9 votes
5 Star
4 Star
3 Star
2 Star
1 Star
Run Rankings


in Maryland


176 Views Last Month
7,613 Since Feb 12, 2016



Awesome Fall colors at Loch Raven.
Jul 25, 2016 near Hampton, MD
Sunlight and color; this is area is great in Fall.
Jul 25, 2016 near Hampton, MD
Great rock scramble with views of the river from high above!
Dec 2, 2018 near Cockeys…, MD
If you need a break...
Dec 2, 2018 near Cockeys…, MD
Lookout over the reservoir.
Nov 15, 2018 near Cockeys…, MD


Trail Run Project is part of the REI Co-op family,
where a life outdoors is a life well lived.

Shop REI Running