Old Field Bluff Trail

The Old Field Bluff Trail is one of the marquee routes at Johnston Mill Nature Preserve — a 296-acre nature preserve owned and managed by the Triangle Land Conservancy (TLC) along the banks of New Hope Creek between Chapel Hill and Hillsborough, NC. The full trail network at Johnston Mill totals 4.1 miles, with the Old Field Bluff Trail serving as the centerpiece of a typical 2–3 mile hike through Piedmont hardwood forest, old farm fields, and historic mill sites.

It's one of the most rewarding short hikes in the Triangle — quiet, well-maintained, and rich with the kind of biodiversity that makes the NC Piedmont special.

The Trail

• Distance: 3.08 mile loop (typical Old Field Bluff route); 4.1 miles total trail network
• Elevation gain: ~223 ft
• Difficulty: Easy to moderate
• Route type: Loop
• Surface: Dirt singletrack with some rooted and rocky sections

The trail winds through classic Piedmont hardwood forest — oaks, hickories, beeches, and tulip poplars — with the bluff sections offering elevated views over New Hope Creek below. Sections pass through old field habitat where farms and homesteads once stood, now reclaimed by successional growth that supports wildflowers and a wide range of bird species.

Most hikers complete the loop in 1.5 to 2 hours at an unhurried pace, with optional connectors to extend into the full preserve trail network.

Highlights

• New Hope Creek — flows through the preserve and is visible from the bluff sections
• Historic Johnston's Mill site — ruins of the 19th-century gristmill the preserve is named for
• Diverse wildlife — white-tailed deer, wild turkey, beavers along the creek, and songbirds throughout
• Wildflowers — strong spring ephemeral bloom (trillium, bloodroot, hepatica) in March and April
• Old growth pockets — some of the larger trees in the preserve are estimated at 150+ years old
• Strong birdwatching — bring binoculars; wood thrushes, scarlet tanagers, and pileated woodpeckers all nest here

Triangle Land Conservancy Preserve Rules

Johnston Mill is a TLC preserve, which means a few specific rules to be aware of:

• Open dawn to dusk daily, year-round
• Free access — no entry fee, no parking fee
• Dogs welcome on leash — leashes are required at all times
• Hiking only — no mountain biking, horseback riding, or motorized vehicles
• No hunting allowed
• Stay on marked trails to protect sensitive ecosystem
• Leave No Trace — pack out everything you pack in

Parking & Access

Two parking areas:

• Mt. Sinai Road Trailhead — main entrance, approximately 35.9956, -79.05436
• Turkey Farm Road Trailhead — alternate access point

Both lots are small — arrive early on weekends, especially in fall foliage season.

Seasonal Guide

• Spring (March–May): Wildflower peak, active wildlife, mild temperatures — the best season at Johnston Mill
• Summer (June–August): Shaded forest cover keeps it cooler than open spaces, but bring bug spray for mosquitoes near the creek
• Fall (September–November): Excellent hardwood color, ideal hiking temperatures
• Winter (December–February): Bare canopy opens up creek views otherwise hidden in summer; quiet and uncrowded

What to Bring

• Water — no water available on the trail
• Bug spray in summer (creek means mosquitoes)
• Sturdy walking shoes — roots and rocky sections, plus occasional muddy stretches after rain
• Binoculars for birding
• Camera for creek views and seasonal color

Practical Info

• Land manager: Triangle Land Conservancy (triangleland.org)
• Location: Off Mt. Sinai Road, between Chapel Hill and Hillsborough, NC
• Coordinates: 35.9956, -79.05436
• Fees: Free
• Dogs: Welcome on leash
• Restrooms: None on-site — use facilities in Chapel Hill or Hillsborough before arriving
• From Chapel Hill / UNC: ~15–20 minute drive
• From Durham: ~25–30 minute drive
• Pair with: Other TLC preserves nearby (Brumley Forest, Horton Grove), or a stop in Hillsborough for lunch

Support the Preserve

Johnston Mill is preserved and maintained by donations to the Triangle Land Conservancy — a small donation or annual membership helps keep this and other Triangle-area preserves free and accessible. Visit triangleland.org to learn more.