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Lehigh Furnace Gap via Appalachian Trail

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South Mountain Preserve

Lehigh Furnace Gap via Appalachian Trail is a 9.7 mile heavily trafficked out and back trail located near Walnutport, Pennsylvania that features a river and is only recommended for very experienced adventurers. The trail offers a number of activity options and is accessible year-round. Dogs are also able to use this trail but must be kept on leash.

Length 9.7 mi Elevation gain 1,745 ft Route type Out & Back

Dogs on leash

Camping

Hiking

Mountain biking

Nature trips

Rock climbing

Bird watching

Running

Forest

River

Views

Wild flowers

Wildlife

Rocky

Scramble

Waypoints (0)
Weather
UV Index
Daylight
Reviews (290)
Photos (645)
Recordings (217)
Completed (717)
Matt Frank
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HikingGreat!No shadeRockyScramble

Decided to hike the trail South to North headed towards Lehigh Gap, and definitely think it was the better move. Took the North Trail and the South Trail on the way back. If you don’t feel like scrambling on unsteady rocks and searching for blue blazes, skip the South Trail. Really nice camp sites to stop and take a break at if need be.

Danielle Enlow
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HikingRocky

Lots of shade, bugs mostly stayed away with spray. Great views on the north scenic portion. All trails has the distance off for this trail. It's actually 5.1 (as a sign at the trail head notes). There is one that's 9 mi but it's not this one.

Robert Coll
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HikingRocky
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David Rosner
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HikingRocky
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Danielle Drosnock
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HikingRocky

Beautiful scenery all along this trail. The blue section to the overlook was very rocky and parts of the trail are getting overgrown.

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Alexis Canary
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HikingRocky

Overall beautiful trail with nice views into the valley/river on the north side. Plenty of places for lunch here! In the main parking lot there’s a sign for the trail but it splits in two pretty quickly. Be sure to take the right trail that looks more rocky. It crosses over a couple dirt roads, be sure to continue forward across. There are markers on some rocks and some wooden stakes with flags so keep your eyes out. We completely missed the last 1.2 after the loop, we hit one of the towers and just continued around the loop. Didn’t realize it until we checked our mileage. It’s about 7 miles if you go this route and took us 3.5 hours total. North trail was generally uphill until you level off and get some nice views. South trail was all wooded and also at a moderate grade. Glad we had our hiking poles for this one. Beautiful scenery.

Adam Huff
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HikingRocky
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Sam Trapani
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HikingBugsRocky
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Joe Preis
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HikingScramble

Hike with Jeff, Mike, Andrea, and Tim.

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Nikki B
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HikingRocky
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Bill Peeters
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HikingRocky

Great hike. Most of the trail was fairly easy but I took the south trail back and that was about 1 mile of rock hopping. Fun but definitely would be dangerous in wet conditions. Not a ton of views along the way but if you like walking through the forest this is a good hike for you.

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Colleen Moffatt
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HikingRocky
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Lena Ma
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HikingBlowdownBugsOver grownRocky

No views on the white trail at all! Moderate hike at best. Only a few rocks that you had to walk over.

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Bill Peeters
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Hiking

Great hike overall. The first half mile was pretty steep but nothing too bad after that. While on the south side of the ridge the weather was nice but as soon as I crossed to the north there was a pretty strong breeze which was somewhat cold but the views were great.

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Kevin Whitten
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HikingRockyScramble
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Justin Stanbro
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Hiking

we parked a car on both ends of the trail to make it a 5 mile one-way. Did it with some dads and boys 10-14 year old. awesome views, lots of fun.

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Alycia Harris
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HikingRockyScramble
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Kevin Kennedy
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HikingOver grownRockyScramble

The majority of this trail is just ok. It's mostly just crunching miles on the AT. The trail is very rocky and many sections are overgrown this time of year. So much so that we had to walk with our poles overhead because they were getting snagged on the tall grass. The best parts are the North and South Scenic Loops (blue blaze). The North loop offers a couple miles of views as you walk along the ridge line. The South Loop is the real gem here. A mile of rock scrambling with some views thrown in as well. We could have spent half the day here just hopping and bopping around. We set up a tripod and shot a bunch of video in slo-mo jumping from boulder to boulder like a couple of little kids. Great spot to have lunch sitting atop the boulder field. We started at Lehigh gap and headed south, so it took several miles of not so exciting AT miles before reaching the South trail. On the way back we took the North trail. If I were to do it again, I would drive out to Furnace Gap and head north on the AT from there. It's a short mile hike to reach the South trail and just have a bunch of fun on the rock scramble before returning.

Jennifer Bertram
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HikingRockyScramble
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Showing results 1 - 19 of 290