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Trail Conditions
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- Snow Groomed
- Snow Packed
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- Freeze/thaw Cycle
- Icy
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Trail Flow (Ridden Direction)
Trailforks scans users ridelogs 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 riders are riding a trail in its intended direction.
The colour categories are based on what percentage of riders are riding a trail in its intended direction.
- > 96%
- > 90%
- > 80%
- > 70%
- > 50%
- < 50%
- bi-directional trail
- no data
Trail Last Ridden
Trailforks scans ridelogs 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
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- Both Directions
- Uphill Primary
- Uphill Only
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Contribute Details
Colors indicate trail is missing specified detail.
- Description
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- Description & Photos
- Videos
Trail Popularity ?
Trailforks scans ridelogs 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 rides = more kinetic energy = warmer colors.
- most popular
- popular
- less popular
- not popular
ATV/ORV/OHV Filter
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Activity Recordings
Trailforks users anonymized public ridelogs from the past 6 months.
- mountain biking recent
- mountain biking (>6 month)
- hiking (1 year)
- moto (1 year)
Activity Recordings
Trailforks users anonymized public skilogs from the past 12 months.
- Downhill Ski
- Backcountry Ski
- Nordic Ski
- Snowmobile
Winter Trails
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A routing network for winter maps does not exist. Selecting trails using the winter trails layer has been disabled.
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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 riders jump on trails. Zoom in to see individual jumps, click circles to view jump details.
Trails Deemphasized
Trails are shown in grey.
Only show trails with NO bikes.
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The Greylock Glen area covers 1,000 acres in the shadow of Mount Greylock, which overlooks the scenic Berkshire County town of Adams. This area is in the process of being developed by the town and the Commonwealth in partnership with the Thunderbolt Ski Runners as a model for outdoor recreation, environmental conservation, and education. The new development of this area will include hiking and other pedestrian trails, downhill backcountry skiing (including the historic Thunderbolt Ski Trail), single-track mountain biking and running trails, cross-country skiing trails, and snowmobile connections. https://www.thunderboltski.com/membership-payment
source: Thunderbolt Ski Runners
Primary Trail Type: Cross-Country
Shuttleable: YES
Land Status: State Park
google parking directionsLinks
Region Supporters & Maintainers
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Thunderbolt Ski RunnersMaintainer
Activities Click to view
- Mountain Bike
33 trails
- Hike
44 trails
- Trail Running
41 trails
- Downhill Ski
3 trails
- Backcountry Ski
13 trails
- Nordic Ski
11 trails
Region Details
- 1
- 14
- 13
- 3
Region Status
Caution as of Apr 17, 2025Stats
- Avg Trail Rating
- Trails (view details)
- 39
- Trails Mountain Bike
- 34
- Trails Hike
- 44
- Trails Trail Running
- 41
- Trails Snowmobile
- 3
- Trails Snowshoe
- 15
- Trails Downhill Ski
- 3
- Trails Backcountry Ski
- 15
- Trails Nordic Ski
- 11
- Total Distance
- 30 miles
- Total Descent Distance
- 17 miles
- Total Descent
- 10,028 ft
- Total Vertical
- 2,046 ft
- Highest Trailhead
- 3,162 ft
- Reports
- 152
- Photos
- 15
- Ridden Counter
- 3,111
Popular Greylock Glen Multi-Use Trail System Trails
Mountain Bike Routes
| title | rating | distance |
|---|---|---|
| Greylock Go Around 50K | 31 miles |
Photos of Greylock Glen Multi-Use Trail System Mountain Bike
trail: Glen Meadow Loop
104 |
Mar 25, 2021 @ 7:21pm
Mar 25, 2021
trail: Glen Meadow Loop
74 |
Mar 25, 2021 @ 7:19pm
Mar 25, 2021
trail: Moonwart
140 |
Oct 24, 2020 @ 5:07am
Oct 24, 2020
trail: Little Dragon Tail
102 |
May 23, 2020 @ 6:22am
May 23, 2020
trail: Glen Meadow Loop
231 |
Oct 26, 2018 @ 9:48am
Oct 26, 2018
trail: Moonwart
145 |
Jul 9, 2018 @ 4:45am
Jul 9, 2018
trail: Moonwart
144 |
Jul 9, 2018 @ 4:44am
Jul 9, 2018
trail: Moonwart
151 |
Jul 9, 2018 @ 4:44am
Jul 9, 2018Videos of Greylock Glen Multi-Use Trail System Mountain Bike
trail: Hemlock Hollow
2:11 |
385 |
Sep 9, 2021 , Adams
trail: Hemlock Hollow
9:45 |
486 |
Aug 23, 2021 , Adams
trail: Wolf Tree Trail
4:40 |
407 |
Apr 11, 2021 , Adams
trail: Moonwart
2:46 |
460 |
Apr 11, 2021 , Adams
trail: Little Dragon Tail
3:34 |
340 |
Apr 11, 2021 , Adams
trail: Moonwart
4:13 |
540 |
Apr 4, 2021 , Adams
Recent Trail Reports
| status | trail | date | condition | info | user |
|---|---|---|---|---|---|
| Connector Trail | Aug 29, 2021 @ 2:32pm Aug 29, 2021 | Ideal | physicsmazz | ||
| Little Dragon Tail | Aug 29, 2021 @ 2:32pm Aug 29, 2021 | Ideal | physicsmazz | ||
| Hidden Meadow Connector | Aug 29, 2021 @ 2:32pm Aug 29, 2021 | Ideal | physicsmazz | ||
| David's Pass | Jun 1, 2021 @ 5:40am Jun 1, 2021 | Ideal | Cknowlesmaine | ||
| Old Adams Rd. | Nov 10, 2020 @ 3:38am Nov 10, 2020 | Wet | 1000paces | ||
| Bellows Pipe Trail | Sep 9, 2020 @ 3:46am Sep 9, 2020 | Ideal | 1000paces | ||
| Thunderbolt to Roost | Sep 5, 2020 @ 9:36am Sep 5, 2020 | Ideal | 1000paces | ||
| Bucket Trail | Jul 20, 2020 @ 2:43pm Jul 20, 2020 | Ideal | 1000paces | ||
| Bellows South to Wolftree | Oct 11, 2019 @ 5:18am Oct 11, 2019 | Dry | 1000paces |
Activity Feed
| username | action | type | title | date |
|---|---|---|---|---|
| Cknowlesmaine | add | report | activity #69826276 | Apr 17, 2025 @ 4:02pm Apr 17, 2025 |
| Cknowlesmaine | add | report | activity #68141508 | Mar 21, 2025 @ 9:53am Mar 21, 2025 |
| franktoots | ridden | trail | activity #64448802 | Jan 11, 2025 @ 4:32pm Jan 11, 2025 |
| Cknowlesmaine | add | report | activity #64273203 | Jan 8, 2025 @ 10:36am Jan 8, 2025 |
| SurfAlbany | wishlist | region | activity #62587099 | Dec 1, 2024 @ 8:17pm Dec 1, 2024 |
Recent Comments
| username | type | title | comment | date |
|---|---|---|---|---|
| trail | Came down this 6/19/24. Trail was dry and free... | Jun 20, 2024 @ 4:33am Jun 20, 2024 | ||
| trail | Decent trail to bring you from Cheshire Harbot... | May 25, 2024 @ 6:01pm May 25, 2024 | ||
| trail | Great ride coming from Jones' Nose. Few fun... | May 25, 2024 @ 5:59pm May 25, 2024 | ||
| trail | The Hemlock Hollow loop is a wonderful... | Sep 27, 2023 @ 7:58am Sep 27, 2023 | ||
| trail | The top 2/3 of this trail is surprisingly... | Jul 11, 2022 @ 7:03pm Jul 11, 2022 |
Nearby Areas
| name | distance | ||||
|---|---|---|---|---|---|
| Mount Greylock State Reservation | 1 | 0.9 km | |||
| Windsor Lake | 11 | 5.3 km | |||
| Savoy Mountain State Forest | 1 | 6.4 km | |||
| Clarksburg Forest | 6.5 km | ||||
| Shaker Ridge Trails | 7.3 km |
Local Badges
-
Completionist0 awarded
Activity Type Stats
| activitytype | trails | distance | descent | descent distance | total vertical | rating | global rank | state rank | photos | reports | routes | ridelogs |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mountain Bike | 33 | 24 miles | 5,968 ft | 12 miles | 1,952 ft | #4,297 | #2,002 | 11 | 158 | 1 | 2,436 | |
| Hike | 44 | 30 miles | 10,026 ft | 17 miles | 2,047 ft | #3,489 | #1,841 | 4 | 160 | 1 | 573 | |
| Trail Running | 41 | 29 miles | 8,809 ft | 16 miles | 2,047 ft | #3,499 | #1,841 | 160 | 1 | 65 | ||
| Snowmobile | 3 | 2,073 ft | 259 ft | 2 | 1 | |||||||
| Snowshoe | 15 | 8 miles | 4,321 ft | 6 miles | 2,001 ft | 3 | 5 | |||||
| Downhill Ski | 3 | #49 | 1 | 221 | ||||||||
| Backcountry Ski | 13 | 4 miles | 2,103 ft | 3 miles | 1,946 ft | #106 | #60 | 2 | 210 | |||
| Nordic Ski | 11 | 4 miles | 659 ft | 2 miles | 623 ft | #309 | #191 | 2 | 17 |
- By aamcgee
BERK NEMBA & contributors - Admins: BERK NEMBA, BikeBerkshires, Thunderbolt, BERK NEMBA
- #20250 - 8,894 views
- greylock glen multi-use trail system activity log | embed map of Greylock Glen Multi-Use Trail System mountain bike trails | greylock glen multi-use trail system mountain biking points of interest
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