Hiking Terrible Mountain, Vermont - panoramic view  tree outdoor landscape nature mountain sky autumn plant cloud background lake painting forest surrounded distance
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Hiking in Terrible Mountain, Vermont: trails, map and practical info

Connecticut River Valley • Vermont

3.0 Appreciated by 8 hikers
François Dumaine
By François DumaineContributor since 2015Updated 26/05/2026
Difficulty
Hard
Distance
6 km
Elevation
878 m
Duration
4h00
Max altitude
1,006 m

A challenging 878 m ascent through Vermont's diverse terrain, requiring 4 to 6 hours to complete. This hidden gem offers panoramic views of rolling hills and valleys while winding through lush forests and rocky landscapes.

Recommended for :
Intermediate hikers

Ready to explore Terrible Mountain, Vermont? Here's everything you need to know before you go!

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Trail description

Description

Terrible Mountain in Vermont's Connecticut River Valley delivers one of the state's most challenging and rewarding hiking experiences, with its 878-meter elevation gain over 6.4 kilometers testing even experienced hikers. This demanding trail requires approximately 4 hours to complete, but the effort pays off with spectacular panoramic views across Vermont's rolling landscape. Despite its ominous name, Terrible Mountain offers an authentic Vermont wilderness experience that showcases the region's diverse terrain and natural beauty.

Trail Experience and Terrain

The ascent begins in classic Vermont hardwood and conifer forests, where towering trees create a natural cathedral overhead. The forest floor changes dramatically with the seasons, from delicate spring wildflowers pushing through the last patches of snow to autumn's brilliant carpet of maple, birch, and oak leaves. These lower sections provide a gentle introduction before the trail begins its serious climb.

As you gain elevation, the terrain transitions to increasingly rocky and technical ground that demands careful footing and route-finding skills. These rocky sections break up the forest hiking with exposed ledges and boulder fields that require scrambling techniques. The contrast keeps the hike mentally engaging while providing natural rest spots where you can assess your progress and take in the expanding views.

The upper elevations reveal Vermont's signature landscape spreading out below. From the rocky outcrops and summit areas, hikers can see across forested ridges, agricultural valleys, and distant mountain ranges that define the Connecticut River Valley region. The views shift dramatically with weather conditions and seasons, making each visit a unique visual experience.

Wildlife and Natural Environment

Terrible Mountain supports a rich ecosystem typical of Vermont's forested mountains. White-tailed deer are frequently encountered, especially during early morning or late afternoon hikes when they move between feeding areas. Their tracks and signs are visible throughout the trail system, and patient hikers often spot them browsing in forest clearings.

Red foxes also inhabit the mountain, though direct sightings require luck and timing. More commonly, hikers notice their tracks in muddy sections or catch glimpses of their distinctive red coats disappearing into the underbrush. The varied habitat supports these predators year-round, with den sites typically located in the rockier upper elevations.

Bird watching opportunities change with elevation and season. The dense forest sections host songbirds like wood thrushes and various warbler species, while the exposed rocky areas attract raptors including red-tailed hawks and the occasional peregrine falcon. Bringing binoculars significantly enhances wildlife viewing, especially for identifying distant birds soaring around the summit areas.

Wildflowers add seasonal color throughout the warmer months, with different species blooming at various elevations and times. Trilliums and bloodroot appear in the forest understory during late spring, while mountain asters and goldenrod brighten the rocky areas in late summer and early fall.

Planning and Preparation

The 4-hour duration estimate reflects the challenging nature of the 878-meter elevation gain and technical terrain. Most hikers find this timeframe realistic when accounting for rest breaks, wildlife observation, and time spent enjoying the summit views. Starting early provides the best lighting conditions for photography and increases wildlife encounter opportunities.

Trail conditions vary significantly with Vermont's changing weather patterns. Spring hiking often involves muddy sections and stream crossings swollen with snowmelt, while winter conditions can make the rocky sections treacherous without proper equipment and mountaineering experience. Summer brings the most stable conditions, though afternoon thunderstorms can develop quickly at higher elevations.

Weather forecasts become critical given the substantial elevation gain and exposure on the upper mountain. Conditions can change rapidly, and temperatures at the summit typically run 10-15 degrees cooler than at the trailhead. Wind exposure increases significantly in the rocky sections and summit areas, making layered clothing systems essential for comfort and safety.

Essential Gear and Safety Considerations

Water requirements exceed typical day hike needs due to the substantial elevation gain and 4-hour duration. The rocky terrain sections are particularly demanding and increase fluid needs, especially during warmer weather when dehydration becomes a serious concern. Carry more water than you think you'll need, and consider electrolyte replacement for longer efforts.

Proper footwear becomes crucial for safely navigating the varied terrain from forest paths to rocky scrambles. Hiking boots with good ankle support and aggressive tread patterns provide the stability and grip needed for the technical sections. The rocky areas can become slippery when wet, making quality footwear a safety essential rather than just a comfort consideration.

Pack substantial snacks or a lunch to sustain energy throughout the longer hiking duration. The significant elevation gain burns considerable calories, and maintaining adequate nutrition helps preserve strength and decision-making ability throughout the ascent and descent.

Navigation skills become important in the rocky upper sections where the route may be less obvious. While the main trail is generally well-marked, weather conditions can reduce visibility, and the technical terrain requires route-finding abilities. A map and compass, along with the knowledge to use them, provide essential backup to GPS devices.

Environmental Stewardship

Staying on marked trails protects both the mountain's fragile ecosystems and ensures hiker safety. The diverse terrain includes areas where vegetation recovery from trampling can take years, particularly in the alpine-like conditions of the upper elevations. The established routes also provide the safest passage through rocky sections where route-finding can become challenging.

Carrying out all trash maintains the pristine wilderness character that makes Terrible Mountain special. The mountain's remote location means any litter significantly impacts the experience for future visitors. Pack out everything you bring in, including organic waste like fruit peels that can attract wildlife and disrupt natural feeding patterns.

The challenging nature of Terrible Mountain attracts dedicated hikers who appreciate both the physical demands and natural rewards. This creates opportunities for meaningful connections with fellow outdoor enthusiasts who share similar values about wilderness experiences and personal challenges. The summit areas naturally become gathering spots where hikers rest and share experiences, fostering an informal community of people who appreciate Vermont's mountain wilderness.

Ready to go?

Everything you need to know before you go

Where?

Address
Not available
GPS coordinates
43.313564, -72.743604
Phone
Not available

Starting Point

To access the hiking trails, you can start at one of the following trailheads:

  1. Trailhead on Terrible Mountain Road: Park at the designated parking area located along Terrible Mountain Road. The trailhead is easily accessible from this point.

  2. Trailhead via Route 100: There is another entry point off Route 100. Look for signs indicating the parking lot and trail access.

Ensure to check local maps or resources for any additional trailheads or updates on parking availability.

When?

Opening hours
No information
Varies by season
Best season
Fall
Spectacular colors
Best time
Early morning
Less crowded
Weather (next days)
Loading

How much?

Entry fees
Adult
Not available
Child
What to bring?
Gear
  • Hiking shoes Essential
  • Layered clothing Essential
  • Rain jacket Essential
  • Trekking poles
  • Headlamp
Download the PDF checklist
Water & food
2L minimum
No water point on the trail
Bring energy snacks for a 4h+ hike
Good to know
Park rules
No dogs
Safety
Download the GPX before you go
Limited cellular coverage on the trail
Slippery after rain
Be careful on rocky sections
In an emergency
Emergency
911
Parking GPS
43.313564, -72.743604
Center
Not available

Hikers' opinions

3.0
8 Reviews
J
Jennifer
Aug 20, 2025
Solid mountain adventure with significant elevation gain that demands good fitness preparation. The 6.4 km route took me about four and a half hours to complete. Trail conditions were generally good, though some steep sections require careful footing. Be aware that parking and trail access both involve fees, so budget accordingly for your visit.
J
Jennifer
Aug 19, 2025
Solid mountain hike with consistent elevation gain spread across the route. The 878m ascent demands good cardiovascular fitness but rewards determined hikers with a sense of accomplishment. Trail conditions were well-maintained during my visit, though sections become steep and technical. Budget for parking costs and allow sufficient time for the full experience.
S
Sarah
Mar 28, 2025
Moderately challenging trek that delivers a solid workout without being overly technical. The steady climb maintains consistent difficulty throughout the route. Trail markings are clear and helpful for navigation. Just remember that both parking and access require payment, so come prepared with cash or cards for these necessary fees.
S
Sarah
Mar 14, 2025
Moderately strenuous hike that lives up to its reputation for difficulty. The elevation gain of 878m is distributed throughout the route, making it a full-body workout for most hikers. Trail markings are clear and the surrounding forest provides pleasant scenery. Remember that parking requires payment and the trail doesn't permit dogs, so plan your visit accordingly.
R
Robert
Jan 22, 2025
Excellent mountain workout with substantial elevation gain that separates casual walkers from serious hikers. The 878m climb tests your endurance over several hours of hiking through quiet woodland. Trail conditions were excellent and well-maintained throughout my visit. Factor in parking fees and bring plenty of water to stay hydrated during this demanding Vermont adventure.

FAQ - Frequently asked questions

Everything you need to know
Hard
878.00 M
1006.00 M
4h00
No
No
No, Terrible Mountain is rated as a Hard difficulty trail with 878 m of elevation gain over 6.4 km, making it unsuitable for beginners. This hike requires a good fitness level and hiking experience to safely complete the challenging ascent.
The Terrible Mountain trail is 6.4 km in total distance. Combined with the significant 878 m elevation gain, this makes for a moderately long and challenging hike in the Connecticut River Valley region.
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Update : June 2026