Air Line Trail to Tri-State Marker
Air Line Trail to Tri-State Marker
4.7
(8485)
8,486
hikers
06:14
24.1km
140m
Hiking
Hike the challenging 15.0-mile Air Line Trail to the historic Tri-State Marker, where Connecticut, Massachusetts, and Rhode Island meet.
Last updated: February 26, 2026
Waypoints
Start point
Parking
Get Directions
63 m
Highlight (Segment) • Trail
Tip by
12.2 km
Highlight • Monument
Tip by
24.1 km
End point
Parking
Way Types & Surfaces
Way Types
22.9 km
1.04 km
116 m
Surfaces
23.8 km
222 m
116 m
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Elevation
Highest point (180 m)
Lowest point (100 m)
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Weather
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Today
Sunday 12 July
28°C
14°C
0 %
Additional weather tips
Max wind speed: 10.0 km/h
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This route was planned by komoot.
While specific parking details for the Tri-State Marker section are not provided, the Air Line Trail generally has various access points along its length. It's advisable to research the closest trailhead parking to the starting point of your planned hike towards the marker.
The initial section of the route follows the Air Line Trail, which is typically flat with surfaces ranging from packed earth and crushed stone to gravel and some paved sections. However, the spur leading directly to the Tripoint marker deviates significantly, becoming a challenging uphill and rocky climb for approximately 0.68 miles.
Yes, the Air Line State Park Trail, which includes this route, is generally dog-friendly. Dogs are typically allowed but must be kept on a leash. Always ensure you clean up after your pet to maintain the trail's cleanliness.
The route can be enjoyed in various seasons. Spring and fall offer pleasant temperatures and beautiful foliage. While the main Air Line Trail is accessible, the challenging, rocky section to the Tripoint marker might be more difficult in wet or icy conditions, so consider this for winter or early spring hikes.
No, there are typically no permits or entrance fees required to access the Air Line State Park Trail. It is a public trail system, making it freely accessible for hikers.
The absolute highlight of this route is the historic Tripoint marker itself, where you can stand in Connecticut, Massachusetts, and Rhode Island simultaneously. Along the broader Air Line Trail, you might also encounter historic features like the Rapallo and Lyman Viaducts, offering stunning views, though their proximity to this specific route may vary.
The main Air Line Trail is generally considered easy and suitable for families. However, the specific segment leading to the Tripoint marker is rated as moderate to challenging due to a significant uphill and rocky climb. Beginners or families with young children might find this final section quite strenuous.
Yes, the route primarily follows the Air Line Trail, which is part of the extensive Air Line State Park Trail system. It also connects to other trails like the Southern New England Trunkline Trail, Tri-State Marker Loop Trail, and Tri-State Marker Trail, offering options for longer or alternative explorations.
The route offers beautiful scenery with abundant greenery, secluded areas, and passages through forests and along wildlife management areas. You can expect to see typical New England woodland wildlife, including various bird species, deer, and smaller mammals. The Tripoint marker itself is on a high point, offering views, especially through the trees.
The Air Line Trail is a relatively undeveloped rail trail, so dedicated restrooms or potable water sources are generally not available directly on the trail. It's recommended to bring your own water and plan for restroom breaks before or after your hike.
Given the varied terrain, including rocky uphill sections, sturdy hiking boots with good ankle support are highly recommended. Dress in layers suitable for the weather, and bring plenty of water, snacks, a map or GPS device, and sun protection. Trekking poles can be helpful for the challenging climb to the Tripoint marker.
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