SectionHiker.com Backpacking Gear Reviews and FAQs 
The Terrifying 25 is a popular list of difficult White Mountains Hiking Trails compiled by Trish Herr, the author of Up! A Mother and Daughter’s Peakbagging Adventure, for her young daughters Alex and Sage. They enjoy hiking through boulder caves, rocky scrambles, and traversing avalanche slides, which are well represented by this list.
The rules for hiking this list are pretty simple. You need to hike 20 trails on the Required list and 5 more trails from the Electives List. It just so happens that I’ve hiked all of them, but you don’t have to go to such extremes if you don’t want to. There is also a patch awarded to people who finish this list, which is much coveted by hard core White Mountain hikers. Click for the complete set of rules and award information.
Required Trails (Pick 20)
| Date | |
|---|---|
| Baldface Circle Trail | 11/15/14 |
| Caps Ridge Trail | 9/15/12 |
| Carter Ledge Trail | 11/14/15 |
| Castle Trail | 6/19/11 |
| Chemin des Dames | 7/2/17 |
| Flume Slide Trail | 6/28/14 |
| Great Gulf Trail | 8/3/15 |
| Great Gully Trail | 7/2/17 |
| Huntington Ravine Trail | 8/20/16 |
| Ice Gulch Path | 9/1/15 |
| King Ravine Trail | 6/21/17 |
| Madison Gulf Trail | 7/3/17 |
| Mount Morgan Trail (ladder route) | 5/11/16 |
| Mount Percival Trail (cave route) | 5/11/16 |
| North Slide, North Pyramid | 5/15/16 |
| Six Husbands Trail | 7/5/17 |
| South Slide, South Pyramid | 5/15/16 |
| Sphinx Trail | 7/5/17 |
| Subway (King Ravine Trail) | 6/25/16 |
| Table Rock Trail, Dixville Notch (from eastern trailhead to ledge) | 9/30/16 |
Elective Trails (Pick 5)
| Date | |
|---|---|
| Airline Trail | 7/25/11 |
| Algonquin Trail | 11/1/15 |
| Beaver Brook Trail | 7/8/11 |
| Brook Trail | 7/30/13 |
| Blueberry Ledge Trail | 3/31/10 |
| Castle Ravine Trail | 6/22/17 |
| Desolation Trail | 8/8/14 |
| Devil's Hopyard Trail | 9/8/12 |
| Goodrich Rock | 9/12/15 |
| High Cannon Trail | 9/17/10 |
| Osseo Trail | 1/24/2010 |
| Percy Peaks Trail | 11/5/16 |
| Wildcat Ridge Trail (rt 16 to E peak) | 6/7/09 |
| Willey Range Trail (ladder section to summit) | 10/4/09 |
Written 2017.
As someone who doesn’t like heights, I’ve already seen some of those trails and added them to my “do not hike” list. Precipice trail in Acadia is about as scary as I ever want to do.
Precipice and Bee hive are sketchy, I do loove the Acadia hiking though. I also took the trail up Jordan Cliffs up once to Sargent, and it had a few iron rung hold ons. skirting some steep death drops. Not so bad alone, but having my wife with me, I could not help but be more nervous watching her. Another tough one was Dudley Trail down off of Pamola Peak in Baxter. sooooo steep, lot of bum sliding. Never again.
Of course, you realize that none of those trails are in the White Mountains….
What about Owl’s Head Slide?
Not exactly terrifying. If you fall off it, you land on a bush along the side of the trail. Most people, it’s sad to say, bushwhack around it.
I agree with Aimee. I’ve done a lot of the T25 and only Huntington’s and Flume Slide might have been worse than Owl’s Head Slide (haven’t done King’s Ravine or most of the others in that area). Now, I did try (failed less than 1/10 mile from the bushwhack) Owl’s Head in winter and under squall conditions and it was treacherous and impossible to follow even with GPS. There were no bushes to fall into – lol. I’m planning on going back this summer and maybe my opinion will change. I still think it has to be harder than some on the list.
Any effort to get a similar list for ADK? Always wondering want interesting and exposed trails I’m missing in northern NY!
It’d have to be locally sourced.
I have completed all 46 peaks in the Adriondacks. These are the ones that comes to my mind
Saddleback from Basin. Or worse (in my opinion going down, on the way to Basin). We barely made it to the top and safety before a quick moving thunderstorm rolled through. We had to help a couple, who was not prepared, to go down safely with overnight packs.
The trail in between Algonquin and Iroquois from Lake Colden is steep.
The trap Dyke up Colden. Some people would probably consider it rock climbing.
Panther Gorge to Haystack maybe?
If you don’t like heights, the cables on Gothics may be a little unsettling.
I just went DOWN Madison Gulf trail today and it was super steep and wet. Very challenging. The Star Lake trail is also a strangely eerie and steep slide with a chute at summit of Adams that I would recommend for the list
That was Stupid. Did you consider turning around and taking an easier path down like Osgood or Webster Scout? You have to plan hikes when you go above tree line.
Has anyone considered the Holt Trail on Cardigan? It’s pretty sketchy for the last .3 mi.
It’s not in the white mountains.
The Webster Cliffs trail looks terrifying, but then again this is a “Nope” list for me who is scared of heights.
Half Dome–it’s in the White [Knuckle] Mountains…
Does starting at Lost Pond Trail to Wildcat Ridge “count”? Or, is crossing Glen Ellis river a mandatory part of the trail? I realize it’s an elective, and any list that includes Huntington Ravine as a mandatory hike isn’t one I’m likely to finish anytime soon!
The terrifying elements weren’t too terrifying–more fun than anything, though, overall trail was a tiring afternoon!
Yes. You have to cross the Ellis River (that’s its name). The water is so low that shouldn’t be a problem.
Thanks! Already went, but if I wanted it to count, can I make up that .1 mile separately? Starting at Pinkham Notch seemed like a good idea. Oh well.
Of course!
Phew. :-) I mean, I could end up there again someday with my 12yo, but it’s nice to know it’s easily remedied. Perhaps we’ll start there on our way to Isolation. Thanks!!