4.5 miles
498 ft
-501 ft
426 ft
High Point

The Breakneck Ledge mountain bike route at Blue Hills Preserve is a challenging 4.5 mile route that incorporates a number of kickass climbs as well as some of the more technical trails in the Park.

The route starts and ends in the Houghton's Pond parking Lot, from where it heads up the hill towards the Park Offices, where it crosses Hillside Street into the Great Blue Hill section, where most of the route plays out.
The route incorporates parts of Blue Hills' most famous trails including Breakneck Ledge Path and Coon Hollow Path.

The route is ridden in a counter clockwise direction and is marked by yellow triangle blazes.

Please keep in mind that Blue Hills is a multi-use park and yield to other trail users.

Also be sure to check out the awesome views of the bay area from the top of the hills.


Detailed Description
Breakneck Ledge - Advanced is a 5 mile moderately popular expert route located near Milton Massachusetts. This mountain bike only route can be used one direction and has a hard overall physical rating. This route includes 23 trails. This route climbs 498 ft with a max elevation of 426 ft then descends -501 ft.
Local Trail Association
Local trail association
Southeast Massachusetts NEMBA Chapter (nemba.org)
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20 Reviews & Comments

  • + 0
MatthewmniK3s (Nov 25, 2021 at 14:02)
Easy ride on hard tails (WITH TUBELESS TIRES) highly recommend tubeless tires if you ride on a hardtail as the top section is quite rocky and they are sharp. Take high lines down the rocks but overall a very fun and fast trail just have to watch out for hikers crossing.
  • + 1
mappermook TRAILFORKS (Sep 22, 2021 at 13:11)
Tough technical climbing on the way up, borderline black in that direction. Fun technical descent when coming down.
  • + 1
Robtraina (Jul 10, 2021 at 12:03)
Fun little loop made up of mostly cart road. Some of the climbs are moderately technical, while the downhills offer some high speed fun. Note, the trails hold a bit of water prepair to get wet!
  • + 0
nmerksamer (Jun 19, 2021 at 14:40)
Wouldn’t really call this black
  • + 0
nmerksamer (Jun 19, 2021 at 14:40)
Wouldn’t really call this black
  • + 1
nmerksamer (Jun 19, 2021 at 14:39)
Premier enduro line in eastern Mass. Travel two hours in any direction and you won’t find a trail this good, if this is what you’re into
  • + 0
Jtbald21 (Jan 12, 2021 at 9:41)
This is a very mild blue, maybe it is only a black if you are going uphill and your ebike battery died. Also not sure why it says single track when it's definitely double track. Either way a ripping good time going downhill.
  • + 1
HeavyFlow (Sep 30, 2021 at 7:52)
What??? this is not a blue - not at the top at least - did you skip the top section?
  • + 2
JET-MTB (Jul 5, 2020 at 10:13)
Funnest trail I know of in Blue Hills. Great technical features at top and you can generate some real speed after getting through the real chunky stuff. Nice to have a trail like this 20 minutes from Boston. I wimp out and take the fire road to the trail head, but it's still a good workout.
  • + 1
vidiro (Jun 13, 2020 at 19:42)
Super fun intermediate-to-expert downhill. The first half is ultra chunky and jagged, and the latter half is raw speed with frequent drainage ditches that act as jumps. Just keep looking ahead and careful not to get surprised by one and lose control, since you're going really fast and they're maybe 2-3 seconds apart from each other
  • + 1
sjma (May 10, 2020 at 7:51)
Top section can get very creative with how you approach the 2-3’ drops and crevasses. Little further down is frequently waterlogged with lots of wet leaves and slick rocks. Extremely difficult in the winter when the rocks get iced over.

Middle section is more mellow and high speed. Lower section has some drainage ditches that come at you very fast when pinned and has melon-sized rocks to dodge.

The upper section is a popular path for hikers so please be courteous and careful going down the trail. The lower sections are much less popular with hikers and have much better sight lines.
  • + 0
nmerksamer (May 6, 2020 at 14:48)
One super steep section and two difficult loose rock gardens with some exposure. Imagine a more difficult version of Coon Hollow, but not as much vertical
  • + 0
1mike12 (Apr 11, 2020 at 19:58)
The upper sections are definitely black diamond, with good experience and long travel shocks it's doable. I definitely walked the big rocks because they were wet. Lower half very fun and more of blue diamond.
  • + 1
HeavyFlow (Sep 30, 2021 at 7:49)
"with good experience and long travel shocks it's doable"

It is doable on a fully rigid bike with V brakes and 26 x 2.1 tires. I used to ride it that way in the 80's
  • + 1
xAJames (Mar 17, 2020 at 16:13)
Most fun mtb trail I've found around Boston. Super technical descent in the first section leads to a fast and flowy middle section with lots of rollers to air off and a mix of the two at the bottom.
  • + 1
Stuffed (Aug 27, 2019 at 5:13)
This this would make great training for an expert level rider who wants to practice extreme rocky descents
  • + 1
HeavyFlow (Nov 13, 2020 at 16:51)
Yup! I always go to this trail BEFORE I head out to Killington or Highland to get some practice in.
  • + 0
Stuffed (Aug 27, 2019 at 5:12)
WARNING: I'm an intermediate level rider who is comfortable trying doing almost anything, but I can't believe this is actually a mountain biking trail. This trail is extremely technical, with sections of clean Singletrack with periodic VERY steep rock garden descents. The beginining of the trail has some fun drop-offs, but after that I either fell or walked my bike at every rock garden due to the crazy dangerous tech that was required. Biking up would be impossible.
  • + 2
HeavyFlow (Nov 13, 2020 at 16:49)
Right! I am out in CA now, and they would call this a quadruple black diamond.
This is definitely an expert level trail however many diamonds you give it.
  • + 0
ajohnnytruant (May 19, 2018 at 3:18)
Very technical descent, though short lived. Many lines to play with.


  • Riding area
  • Primary Activity
    Mountain Bike
  • Difficulty rating
    Black Diamond
  • Route Type
    Out & Back
  • eBike Allowed
  • Bike type
    AM, XC
  • Direction
    One Direction
  • Physical rating
  • Ridelogs
More Stats for Breakneck Ledge - Advanced mountain bike route
  • Altitude min
    177 ft
  • Altitude start
    184 ft
  • Altitude end
    180 ft
  • Grade
  • Grade max
  • Grade min
  • Distance climb
    2 miles
  • Distance down
    2 miles
  • Distance flat
    1,690 ft
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Trail Conditions
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  • Ideal
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  • Very Dry
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Trail transparency
Chill Run on Lower Coon Hollow
Chill Run on Lower Coon Hollow
32 | comments: 0 | favs:
Oct 19, 2022
Quick clip of the lower section of Coon Hollow at Blue Hills
Blue Hills
Blue Hills
1:01 | 1228 | comments: 0 | favs: 1
Nov 10, 2015
Blue Hills Milton, MA. Trail: The Coon

Recent Trail Reports Along Route

Houghton Pond Trail
Nov 5, 2022 @ 10:55pm
Nov 5, 2022
Leaf coverage created a more dynamic ride by hiding rocks.
Headquarters Path
Nov 5, 2022 @ 10:55pm
Nov 5, 2022
Coon Hollow Path
Oct 19, 2022 @ 5:24pm
Oct 19, 2022
The upper Coon Hollow is fairly wet with some standing water. lower section is fine.
Puddle Path
Sep 3, 2022 @ 2:55pm
Sep 3, 2022
Five Corners Path
Aug 6, 2022 @ 1:32pm
Aug 6, 2022
Small tree down across trail, can navigate over or around
more reports »
  • By WillieJacobsz TRAILFORKS Trailforks NEMBA & contributors
  • #11620 - 1,987 views