Open in App
Get this trail on your phone instantly.
more stats
1.2 miles
Distance
217 ft
Climb
-162 ft
Descent
00:16:27
Avg time
55 ft
Altitude change
142 ft
Altitude min
208 ft
Altitude max
143 ft
Altitude start
198 ft
Altitude end
0.898%
Grade
-20.003%
Grade max
21.856%
Grade min
2,533 ft
Distance climb
1,838 ft
Distance down
1,729 ft
Distance flat
00:16:27
Avg time
Lock & Load Details
-
Activities
- Mountain Bike
- Hike
- Trail Running
-
Riding AreaHarold Parker State Forest
Andover, Massachusetts -
Difficulty Rating
-
Voted DifficultyBlack Diamond (2 votes)
-
Local Popularity95 in Mountain Biking [+]
- 65 in Trail Running
- 70 in Hiking
-
Global Ranking
-
State Ranking
-
Trail TypeSingletrack
-
Bike TypeAM, XC
-
DirectionBoth Directions
-
Climb DifficultyBlack Diamond
-
Physical RatingHard
-
Trail VisibilityAlways easy to follow
-
Dogs AllowedYes
-
eBike Allowed
-
Land OwnerMassachusetts Department of Conservation & Recreation
Rides great in both directions.
North to South - a few fun, but punchy, technical uphills when riding in this direction finishing with a fast, flowing downhill.
South to North - starts with a more gradual climb up. You won't avoid all the punchy ascents as there are still one or two mixed in. Multiple opportunities for drops/rollers when riding south to north.
Local Trail Association
-
-
-
Please consider joining or donating to the local trail association to supportDonate to earn trail karma!
trail development & maintenance.
Traditionally Indigenous Territory
Recent Activity on Trail
Past Week
- 13 rides
- 14.8 km average
6 Months
- 142 rides
- 15.7 km avg distance
All
- 1,171 rides
- Last: Jul 23, 2026
| c1 | c2 | c3 | c4 |
|---|---|---|---|
January | February | March | April |
May | June | July | August |
September | October | November | December |
Lock & Load Trail Reports
more »
close
3D
Trail Conditions
- Unknown
- Snow Groomed
- Snow Packed
- Snow Covered
- Snow Cover Partial
- Freeze/thaw Cycle
- Icy
- Prevalent Mud
- Wet
- Variable
- Ideal
- Dry
- Very Dry
Trail Flow (Ridden Direction)
Trailforks scans users activity logs to determine the most popular direction each trail is ridden. A good flowing trail network will have most trails flowing in a single direction according to their intension.
The colour categories are based on what percentage of users are riding a trail in its intended direction.
The colour categories are based on what percentage of users are riding a trail in its intended direction.
- > 96%
- > 90%
- > 80%
- > 70%
- > 50%
- < 50%
- bi-directional trail
- no data
Trail Last Used
Trailforks scans activity logs to determine the last time a trail was ridden.
- < 2 days
- < 1 week
- < 2 weeks
- < 1 month
- < 6 months
- > 6 months
Trail Ridden Direction
The intended direction a trail should be ridden.
- Downhill Only
- Downhill Primary
- Both Directions
- Uphill Primary
- Uphill Only
- One Direction
Contribute Details
Colors indicate trail is missing specified detail.
- Description
- Photos
- Description & Photos
- Videos
Trail Popularity ?
Trailforks scans activity logs to determine which trails are ridden the most in the last 9 months.
Trails are compared with nearby trails in the same city region with a possible 25 colour shades.
Think of this as a heatmap, more activities = more kinetic energy = warmer colors.
- most popular
- popular
- less popular
- not popular
ATV/ORV/OHV Filter
Max Vehicle Width
inches
US Cell Coverage
Legend
Radar Time
Activity Recordings
Trailforks uses anonymized public activity data.
?
Activity Recordings
Trailforks uses anonymized public activity data.
?
Winter Trails
Warning
A routing network for winter maps does not exist. Selecting trails using the winter trails layer has been disabled.
Missing Trails
Most Popular
Least Popular
Trails are colored based on popularity. The more popular a trail is, the more red. Less popular trails trend towards green.
Jump Magnitude Heatmap
Heatmap of where users jump on trails. Zoom in to see individual jumps, click circles to view jump details.
BC Backroad Status
![map legend]()
Service Road Atlas is a free to use, community-driven service for viewing and creating reports on the numerous back-country service roads around B.C. and Alberta.
Slope Aspect
Direction the slope faces
Trails Deemphasized
Trails are shown in grey.
Only show trails with no bike usage.
Suggested Layers
Based on selected activity type
Save the current map location and zoom level as your default home location whenever this page is loaded.
Save
Directions to lock--load trailhead
(42.628250, -71.081830)
Photos
6 more »
Videos
no videos have been added for Lock & Load yet, add a video.
Routes with this trail
★ 5.0 • 31 miles • 1,916 ft • 41 • Loop •
Thirty mile route beginning at the Jenkins lot an touring most all of Harold Parker and Ward Reservation.
★ 4.0 • 9 miles • 606 ft • 14 • Loop •
This is an extremely technical/advanced loop featuring almost all of the most fun+difficult trails at HP....
★ 5.0 • 30 miles • 1,916 ft • 41 •
30 mile ride through most trails in Harold Parker and Ward Reservation.
natescan
Its more fun to ride this trail right after Black Ops. Unless you love torturing yourself with climbing.
6daysofslay
Description is accurate. Fun to ride in both directions. south to north does have a nice rock drop option that is fun.
We hope you've been enjoying Trailforks!
Create a FREE account to view all trail reviews and much more.
Nearby Trails
- Ledges Bypass 161 ft
- Connecting Trail 344 ft
- Black Ops Connector 1,043 ft
- Black Ops B 1,129 ft
- Oxbow Circle Trail 1,224 ft
Harold Parker State Forest
- By WillieJacobsz
Trailforks SBP SWW & contributors - #170414 - 2,345 views
- Follow/Subscribe
- login to download gpx or kml files.
Hit the Trail
Download Trail
Save to wishlist, Garmin & download.
Find Related Routes
Find routes and users activities that include this trail.
You must enter a description before submitting.