The Allentown area is a sweet spot for hikers. You can keep it light with a stroller-friendly creekside walk, chase ridge views on a longer loop, or wander deep into old-growth woods. The trails below are local favorites that span five different experiences across the Lehigh Valley. Each section includes practical notes, real-world review snippets with clickable sources, and an embedded Google Map so you can jump straight from reading to route planning.
Use this guide to match your mood to the day: if you want wide-open meadows and big-sky overlooks, go for Trexler. If you prefer shady woods and rocky outcrops, South Mountain fits. When you need an easy family route, Lehigh Parkway is hard to beat. Jacobsburg brings peaceful forest loops with an education-center vibe, while the Ironton Rail Trail connects history with smooth, accessible mileage.
Trexler Nature Preserve (Schnecksville)
Why go: Open meadows, ridgelet climbs, and far-reaching views just northwest of Allentown. The county’s official page describes Trexler Nature Preserve as a flagship property with sunrise-to-sunset access and multi-use trails for hiking and wildlife observation. Neighboring facilities like the Trexler Environmental Center offer trailhead access and interpretive info (center details).
Signature loop: Many hikers aim for the Trexler Border Trail for skyline views and rolling terrain. AllTrails lists the broader network and recent trip logs on its park hub, where you’ll find multiple options, including shorter cut-throughs when you want to dial back the mileage.
Real talk from the trail: Reviewers regularly highlight the scenery and workout. One traveler summed it up as “stunning views” and made plans to come back after a strong first outing (TripAdvisor). You’ll also see shout-outs for the unique landscape, wildlife corridors, and that unmistakable open-meadow feel celebrated by local tourism (Discover Lehigh Valley).
- Distance & effort: The Border Trail clocks around 8.5 to 8.9 miles according to route planners, with steady up-and-down that pays off in views (AllTrails).
- Trail style: Mix of open grassland, creek crossings, and short wooded segments. Wind and sun exposure can make it feel alpine on breezy days.
- Wildlife: Respect distance, especially near bison/elk enclosures associated with the zoo corridor, a feature frequently noted in local overviews (tourism listing).
- Good to know: For background on the legacy behind the preserve’s land gift and scale, the Trexler Trust maintains a history page (Trexler Trust).
South Mountain Preserve (Emmaus)
Why go: Classic Lehigh Valley woodland with rocky outcrops, quick overlooks, and a build-your-own-loop network. Wildlands Conservancy describes the South Mountain Preserve as roughly 440 acres with nearly 12 miles of trails, a beloved oasis for hiking and biking, and a canopy-rich landscape with seasonal views of the valley.
What to expect: Trails range from mellow woodland paths to rockier sections that require careful footwork. Mountain-bike resources describe parts of the ridge as technical with rock gardens and punchy climbs (Trailforks; MTB Project). If you want something straightforward, you can stitch together shorter loops from the Alpine Street or Trout Run areas using the AllTrails suggestions.
Real talk from the trail: Hikers routinely mention “boulders everywhere” in some sections and praise the shaded feel that keeps summer walks comfortable. The preserve also shows up in local roundups and social posts when fall color hits, with leaf-peeping notes from the Wildlands community feed (Wildlands Facebook).
- Distance & effort: Many short-to-moderate loops, typically 1.5 to 5 miles. Elevation changes are brief but can be rocky underfoot.
- Footing: Expect roots, stones, and occasional scrambles. Good traction shoes help.
- Etiquette: Mixed use is common. Yield appropriately and keep speeds in check on shared segments.
- Access tips: The preserve spans multiple entry points around Emmaus; confirm trailhead parking via the Wildlands page or AllTrails.
Lehigh Parkway (Allentown)
Why go: A green ribbon through the city and a favorite for walkers, runners, anglers, and families. The park threads along Little Lehigh Creek with an easygoing, scenic feel. On AllTrails, the Little Lehigh Parkway Trail is consistently reviewed as an easy route with modest elevation. The park overview groups several approachable options, including paved and gravel surfaces suitable for most abilities.
What to expect: Creek views, footbridges, and historic touches like Bogert’s Covered Bridge. Many visitors come here to unwind after work or to log gentle training miles. One recent community snapshot called it “a great little natural oasis in sprawling Allentown,” capturing the parkway’s appeal for locals who want quick access to nature without leaving town (AllTrails walking tab).
Family bonus: Pair an easy stroll with a stop at the Fish Hatchery area to watch or feed trout, a tip that pops up in parent-friendly local lists and guides.
- Distance & effort: Build your own out-and-back or stitch a loop using bridges across both banks of the creek. Expect generally flat footing.
- Surface: Paved and gravel paths hold up well after rain, though dirt spurs can puddle.
- When to go: Early mornings for sunrise light on the water. Evenings offer a social vibe with runners and walkers.
- Runners: The Parkway is also popular with local race events and casual training loops; AllTrails calls out the route in its trail-running category (AllTrails trail running).
Jacobsburg Environmental Education Center (Nazareth)
Why go: A forested network with creeks, historic context, and a calm, learn-as-you-go atmosphere. The Commonwealth’s official page for Jacobsburg Environmental Education Center lists the address (400 Belfast Rd, Nazareth) and points you to maps and seasonal updates. DCNR notes that Jacobsburg is dedicated to environmental education, offering year-round programming for schools and the public (education programs).
Signature stroll: Start with Henry’s Woods Trail, an easy loop along the creek celebrated for old trees and soft footing. AllTrails ratings are consistently high, and the park hub highlights Henry’s Woods among the best routes in the system (AllTrails park page).
Real talk from the trail: Hikers often use phrases like “well maintained,” “well marked,” and “beautiful” when describing Henry’s Woods and its adjoining loops. An old-growth advocacy site even notes Henry’s Woods as the only remaining old-growth forest in the Lehigh Valley, with towering hemlock and white oak and a 1.9-mile loop that traces Bushkill Creek (Old-Growth Forest Network).
- Distance & effort: Henry’s Woods is easy and family-friendly. For more mileage, connect Homestead, Sobers Run, or the combined Henry’s Woods + Jacobsburg Trail route.
- Seasonal tip: Bug spray in warm months. Waterproof shoes help after rain near creek crossings.
- Community: The center’s official social feed shares timely updates and programs (Jacobsburg EEC Facebook).
Ironton Rail Trail (Whitehall • Coplay • North Whitehall)
Why go: A scenic, history-steeped rail-trail that’s perfect for accessibility, smooth miles, and all-ages outings. The official site explains that the Ironton Rail Trail connects multiple communities along the former Ironton Railroad corridor as a safe, year-round recreational resource. The About page notes the right-of-way purchase from Conrail and highlights the 9.2-mile mainline through Whitehall Parkway, plus connectors and loops.
What to expect: Paved or finely surfaced sections suited to walking, running, cycling, and rolling. It’s ideal for getting consistent mileage without worrying about rocks, roots, or steep grades. On AllTrails, the Ironton Rail Trail listing shows a popular 12-plus-mile circuit option that many locals use for training walks and runs. The trail also hosts seasonal events, races, and community days that keep the corridor lively (Events).
Real talk from the trail: If you want a route that is easy to follow and great for conversation, this is it. Families and casual walkers like that it’s intuitive, signed, and scenic along Coplay Creek. Route maps and a downloadable PDF appear on the official map page.
- Distance & effort: Choose a short out-and-back from any access point, or complete a full loop for 10 to 13 miles depending on the variant you pick.
- Surface: Smooth and accessible. Great for strollers or a first long walk day.
- When it shines: Evenings and weekends are social. Early mornings are quieter for solo miles.
How to Choose the Right Trail for Today
For views and a workout: Pick Trexler. The Border Trail is a moderate endeavor with memorable overlooks and that big-meadow mood. Bring water and a hat; exposure can make it feel hotter than the temperature suggests.
For shade and short loops: South Mountain is your flexible friend. You can assemble 90-minute loops without repeating scenery, and the forest cover is welcome on sunny days.
For a family stroll or recovery day: Lehigh Parkway offers water views, a mix of paved and gravel paths, and easy parking. Add a stop to see trout near the hatchery to keep kids engaged.
For quiet forest time: Jacobsburg’s Henry’s Woods is a gentle, restorative loop with the option to extend. Interpretive signs and year-round programs add context without overwhelming the experience.
For accessible long miles: Ironton Rail Trail lets you set a steady pace across a scenic corridor with historical interest and frequent wayfinding. It’s perfect for conversation walks or bike-share rides.
Trip-Planning Tips
- Check conditions: Before you go, skim recent reports on AllTrails for trail closures, muddy spots, or seasonal detours. Start with the specific trail pages linked above.
- Etiquette: Pack out what you pack in. Stay on trail to protect sensitive areas. Yield correctly on narrow shared segments and give wildlife plenty of space.
- Safety: Good footwear improves your day on rocky sections at South Mountain and the steeper meadows at Trexler. Bring layers and water year-round.
- Navigation: Screenshot a map or save offline. Even straightforward routes feel better when you have a visual backup.