The Reef Bay Trail: St. John's Most Rewarding Hike

What the Trail Covers

The trail begins on the south side of Centerline Road at mile marker 5, where a stone stairway drops into the forest. The first stretch is wide and relatively straightforward — the path narrows and steepens in sections as it descends through dry forest that gives way to denser vegetation lower on the slope.

Two significant stops break up the hike before the beach. At 1.6 miles from the trailhead, a short spur trail leads right toward the petroglyph pool — 0.4 miles round-trip. The Reef Bay Sugar Mill sits another 0.8 miles beyond that, just before the trail opens onto Reef Bay Beach.

The descent takes most hikers two to three hours at a moderate pace. The beach at the end has no facilities, but there's calm water for swimming. The return covers the same 900 feet uphill — plan for more time coming up than going down, and bring more water than you think you'll need.

The Reef Bay Trail Petroglyphs and Pool

The petroglyph spur leads to a shallow freshwater pool set into the hillside, where carved symbols cover a rock face beside the water. These are Taino in origin, made by the people who inhabited the Virgin Islands before European contact — more than a thousand years ago by most estimates. The symbols, known as zemis, are totemic figures connected to Taino spiritual practice.

The pool itself is real, but its depth and whether the waterfall flows depends entirely on recent rainfall. After a dry stretch, the pool may be low and the waterfall reduced to a trickle. After significant rain, there's enough water to swim. There's no way to predict conditions from a distance — it's one of the honest variables of this hike.

The petroglyph spur is short and flat. It's worth the detour regardless of the water level — the carvings are there whether the pool is full or not.

Reef Bay Sugar Mill

The ruins at Reef Bay are the most intact sugar mill remaining on St. John, and they're worth taking time with. The factory was built in the early 1800s and operated through the mid-nineteenth century. Its stone walls, grinding arches, and processing cisterns still stand largely intact, with interpretive signs throughout explaining how the facility operated and who worked it.

The trail itself follows what was once a donkey path — the route used to move goods up from the valley floor to Centerline Road during the plantation era. Walking it now through secondary forest, it's worth keeping that history in view.

Hiking on Your Own vs. the Guided Program

The NPS, in partnership with Friends of Virgin Islands National Park, runs guided hikes down the Reef Bay Trail on a seasonal schedule. The program is well-run and worth considering, particularly if you'd rather not face the return climb.

The guided hike departs from the Cruz Bay Visitor Center at 8am (check-in at 7:30am), with a taxi ride to the trailhead included. A ranger accompanies the group, stops at the petroglyphs, and provides context at the sugar mill. At the beach, a boat picks up the group and returns everyone to Cruz Bay by midafternoon — arriving around 1pm. As of 2025, the program runs on Mondays and Tuesdays through May, and the fee is $110 per person. [VERIFY: current 2026 schedule and pricing at friendsvinp.org or call (340) 776-6201 ext. 238.] Advance registration is required.

If you hike independently, budget time and energy for the return. The descent is manageable; the climb back is not something to underestimate, particularly in humidity. Carry at least two liters of water per person, sunscreen, and insect repellent. Bring a snack — there's nothing at the beach.

Getting There: Trailhead and Parking

The trailhead is at mile marker 5 on Centerline Road. From Cruz Bay, drive east on Centerline Road — the stone stairway entry is on the right (south) side of the road.

Parking is the main logistical constraint. There's a small gravel pullout directly across from the trailhead that fits four or five vehicles. It fills early, particularly on weekends and during peak season. If you arrive by 8am on a weekday, you'll usually find a spot. Later on a Saturday, probably not.

The VITRAN bus and safari taxis both run along Centerline Road and can drop you at the trailhead — a reasonable option given the parking situation. If the lot is full, this is the fallback rather than driving up and down looking for a spot that doesn't exist.

From Indo House, the drive to the trailhead is roughly 20 minutes east. There are no services or facilities at the trailhead or at the beach — plan accordingly before you leave the villa.

What to Bring

The standard advice applies here and isn't exaggerated: water (more than you think), sun protection, insect repellent, snacks, and footwear with actual grip. The trail is rocky and can be slick after rain. Sandals work for casual beach access on St. John, but not for this.

A swimsuit is useful — the beach at Reef Bay is swimmable, and the petroglyph pool may be, depending on rainfall. There's no food or drink at any point along the trail or at the beach.

For a broader look at how this hike fits into a St. John itinerary, see our guide to things to do on St. John — beaches, snorkeling, day trips, and boat charters.

Frequently Asked Questions

How long does the Reef Bay Trail take?

The descent from trailhead to beach covers 2.2 miles and takes most hikers two to three hours, including the petroglyph spur and time at the sugar mill. The return climb covers the same 900 feet of elevation and typically takes longer. Plan for a full morning if you're hiking independently. The guided hike program, which includes a boat return from the beach, runs from approximately 8am to 1pm.

Do you need a reservation to hike the Reef Bay Trail?

No reservation is required to hike on your own — the trail is open daily at no charge through Virgin Islands National Park. The guided ranger hike is a separate program that does require advance registration through Friends of Virgin Islands National Park. That program includes transportation to the trailhead and a boat return from the beach.

Are the petroglyphs always accessible?

The petroglyph spur trail is open whenever the main trail is open. The carvings themselves are on the rock face and visible regardless of conditions. The freshwater pool below them may be full, shallow, or nearly dry depending on recent rainfall — its depth is not predictable from a distance.

Is the Reef Bay Trail appropriate for children?

Older children who are comfortable with uneven, rocky terrain can manage the descent. The return climb is the limiting factor — it's a sustained uphill on a warm day. The guided hike program eliminates that problem by returning by boat, making it a more realistic option for families with younger hikers.

How far is the Reef Bay Trail from Indo House?

The trailhead at mile marker 5 on Centerline Road is approximately a 20-minute drive from Indo House in Great Cruz Bay. Drive east through Cruz Bay and continue on Centerline Road — the stone stairway entrance is on the right side of the road.

Most of St. John's hiking is good. Reef Bay is the trail that people come back from with something to say. The hike covers real ground — ecologically, historically, logistically — in a way that few others on the island do. It rewards preparation and an early start. For a full guide to St. John's trail options by difficulty and location, see our complete guide to hiking on St. John.

For guests staying at the villa, the trailhead is 20 minutes from Indo House, and most of what you'll need for the hike is already there.