The Arnold Arboretum Loop is a walk through the Arnold Arboretum of Harvard University, a landscaped collection of trees and shrubs at 125 Arborway in the Jamaica Plain neighborhood of Boston, Massachusetts. It is one of the most transit-friendly hikes in the city: the MBTA Orange Line runs to Forest Hills station, from which the Forest Hills Gate is a walk of about ten minutes. Drivers can also find street parking near the Arborway and Centre Street entrances, though spaces vary. Entry to the grounds is free and the arboretum is open daily from dawn to dusk. The suggested loop is about 2.5 miles and takes roughly an hour and a half, climbing to the top of Peters Hill, which rises to about 240 feet and is among the highest points in Boston. This puts the route firmly in the easy category by distance and elevation. Paved roads and wide gravel or mown-grass paths link the collections, so the surface is generally smooth, with some gentle slopes and short grassy shortcuts. Shade varies by season and area, with dense groves of conifers and hardwoods along Hemlock Hill and more open meadows near Peters Hill and Bussey Hill. The grounds are known for their lilac collection, magnolias, crabapples, and maples, which give distinct seasonal displays: spring blossom, summer shade and autumn color. From the summit of Peters Hill, visitors can look toward the Boston skyline. Interpretive signs and a printed or online map help with navigation, and visitors can shorten or extend the loop at any junction since the roads form a connected network. The arboretum also connects to Franklin Park and the Emerald Necklace parks system for those wanting a longer walk. Water fountains and restrooms are available near the visitor center and certain gates, but visitors should verify current hours. Dogs on leash may be permitted in designated times, and rules on picnics, bicycles and collecting plants should be checked at the gates. Spring and fall are the most popular seasons, so weekends can be busy during peak bloom.
| Distance | 2.5 miles |
|---|---|
| Duration | 1.5 hours |
| Difficulty | easy |
| Trailhead | MBTA Orange Line to Forest Hills, 10-minute walk |
| Best season | April-October |
| Address | 125 Arborway, Boston, MA 02130 |
Trail facts
- Trail area
- Jamaica Plain, Massachusetts
What to bring
Comfortable shoes
Location
125 Arborway, Boston, MA 02130
42.2979, -71.1250 View on map
Highlights
- Summit of Peters Hill at about 240 feet with skyline views
- Harvard's living collection of trees, including lilacs and magnolias
- Free entry and dawn-to-dusk access in Jamaica Plain
- Walkable from MBTA Orange Line at Forest Hills
- Connections to Franklin Park and the Emerald Necklace
Tips for visiting
- Take the Orange Line to Forest Hills and enter by the Forest Hills Gate.
- Visit in spring for peak lilac and magnolia bloom, but expect weekend crowds.
- Pick up a map at a gate or download one to navigate the connected paths.
- Check the arboretum's posted rules on dogs, bicycles and picnics before visiting.
- Wear comfortable walking shoes; hills are gentle but the loop adds up to 2.5 miles.
When to visit
April to October, with spring bloom and autumn color the most popular periods. Weekday mornings are quieter than weekends.
Accessibility
Paved roads and wide, graded paths cover much of the grounds, making many sections suitable for wheelchairs and strollers, though some hills such as Peters Hill are steep. Visitors with mobility needs should check the arboretum's accessibility information and choose flatter routes.
Frequently asked questions
Is there an admission fee at the Arnold Arboretum?
No, entry to the grounds is free and the arboretum is open daily from dawn to dusk.
How do visitors get there without a car?
Take the MBTA Orange Line to Forest Hills station and walk about ten minutes to the Forest Hills Gate.
How high is Peters Hill?
Peters Hill rises to about 240 feet and offers views toward the Boston skyline.
How long does the loop take?
The 2.5-mile loop usually takes around an hour and a half, depending on how long visitors stop at the collections.