Air Line

HARD 7 reviews

Air Line is a 4 mile heavily trafficked out and back trail located near Berlin, NH that features a lake and is only recommended for very experienced adventurers. The trail offers a number of activity options and is accessible from January until January. Dogs are also able to use this trail but must be kept on leash.

4.0 miles 4896 feet Out & Back

dogs on leash



nature trips


trail running







wild flowers





old growth




washed out

10 days ago

Took air line to Adams, then Madison, the hut and down via Valley way. Rt 2 to Adams summit , about 5 hrs. Start to finish 10 hrs and a change.

Liked Air line better than Valley way, which looked endless at 7 PM.

The view from Madison is better, may be because it includes Adams.

Both peaks involve walking on huge rocks, easy to trip/slip and have a bad fall. Had nice, mostly sunny, warm weather, but can imagine what it would be in rain or snow.

1 month ago

I hiked up Lowes path to Mt. Adams then went back down the air line path. Total distance was 9.6 miles. I definitely prefer the air line path, it has great views once above tree line, easy to follow path.

2 months ago

4.0 miles "out and back" is very misleading and inaccurate. I'm glad I read reviews elsewhere, because the hike is actually 8.6 miles in its entirety!

2 months ago

Guys, thanks for these great reviews! Google maps doesn't show the accurate location of the trailhead-- anyone know whereabouts it is?? Thanks!

2 months ago

My absolute favorite hike on Planet Earth. This trail is straight up all the way, breaks tree line fairly fast and has incredible views of the entire Presidential Range, Mt. Adams, Madison, and Jefferson. You can also access the Madison Hut from this trail and check out the wee little Star Lake. This is not an easy hike. Use caution during inclement weather, it gets REALLY windy on the ridge. I've been up there in freezing rain in early September and a sudden snow storm in October. I'm sure you guys already know but, bring appropriate rain and cold weather gear. It can get intense real fast!

4 months ago

Took Airline down after summiting Mt. Adams via King Ravine (which I can't seem to find on this app) After the grueling climb of King Ravine and scrambling through the subway taking the Airline trail down was relatively easy, but this trail is by no means an easy hike! Once you clear the tree line you've got pure beauty on all sides of you. Great trail if you're looking to summit Adams with a pit stop at Madison Spring Hut to fill up and take a breather.

2 years ago

Very strenuous but this is one of my favorite ridge style hikes in the White Mountains. Durand Ridge is a photographic paradise. The views of Star Lake are impressive.