2.6
(23)
98
hikers
01:02
2.85km
250m
Hiking
Hike the easy 1.8-mile Thurston Griggs Trail in South Mountain State Park, gaining 835 feet to panoramic views from Black Rock.
Last updated: February 26, 2026
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2.85 km
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Way Types & Surfaces
Way Types
2.69 km
155 m
Surfaces
2.64 km
143 m
< 100 m
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Saturday 9 May
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39 %
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This route was planned by komoot.
The komoot data suggests this trail can be completed in about 1 hour. However, due to its challenging and rocky ascent, especially on the way up to the Appalachian Trail, your actual hiking time may vary depending on your pace and how much time you spend enjoying the views. Plan for a bit longer if you're taking your time or if conditions are tricky.
While komoot rates this trail as 'easy' overall, it's generally considered moderate due to a significant and challenging rocky ascent, with an elevation gain of over 250 meters (or 930 feet according to some sources). Once it connects with the Appalachian Trail, the path becomes less rocky and relatively flat. It might be challenging for beginners due to the initial climb.
The Thurston Griggs Trail itself is primarily an out-and-back route. However, it serves as a crucial connector to the Appalachian Trail, allowing hikers to extend their journey and potentially create longer loop options by combining it with other sections of the AT.
The trailhead for this route is uniquely situated at the end of a residential street. Specific parking details are not provided, but typically, trails starting in residential areas may have limited street parking or a small designated lot. It's advisable to arrive early, especially on weekends, to secure a spot.
You can expect a varied terrain. The initial ascent is rocky and challenging, featuring several small water crossings and paralleling a scenic stream. Once you reach the Appalachian Trail, the footpath becomes less rocky and relatively flat. Be aware that in the fall, fallen leaves can obscure the rocky surface, making footing tricky.
The primary scenic reward comes from the trail's connection to the Appalachian Trail. This leads to stunning overlooks like Black Rock and Annapolis Rock. From Black Rock, you can enjoy expansive 180-degree panoramic views of the Cumberland Valley, stretching up to forty miles on a clear day. The trail itself also offers peace and solitude with the soothing sounds of trickling water.
Spring and fall are generally excellent times to hike. In spring, you'll see new growth and potentially wildflowers. Fall offers beautiful foliage, but be cautious of fallen leaves obscuring the rocky terrain. Summer can be pleasant, but be prepared for warmer temperatures and potential humidity. Winter hiking is possible but requires appropriate gear for potentially icy or snowy conditions.
Yes, the Thurston Griggs Trail serves as a crucial connector to the iconic Appalachian Trail. It also intersects with sections of the Tuscalachian Loop.
Yes, near the top of the trail, close to the Pogo Memorial Campsite, there is a natural spring that provides a convenient water source for hikers. The trail is also named in honor of Thurston Griggs, a dedicated conservationist and Appalachian Trail supervisor.
Yes, the Thurston Griggs Trail is generally dog-friendly. However, given the rocky and challenging terrain, especially on the ascent, ensure your dog is accustomed to such conditions. Always keep your dog on a leash and practice Leave No Trace principles by packing out all waste.
The Thurston Griggs Trail is located within South Mountain State Park. Generally, there are no entrance fees for day use at Maryland State Parks, including South Mountain State Park. Permits are typically not required for day hiking on this trail. However, it's always a good idea to check the official Maryland State Parks website for any current regulations or changes before your visit.
Yes, there is a natural spring located near the top of the trail, close to the Pogo Memorial Campsite. This can be a convenient spot to refill your water bottles, but it's always recommended to carry enough water for your entire hike, especially if you plan to extend your trip onto the Appalachian Trail.