State Park · Maryland
Maryland's sprawling river-valley park outside Baltimore: more than 16,000 acres along 32 miles of the Patapsco River, the popular Cascade Falls and the Orange Grove swinging bridge, over 200 miles of trail, and two campgrounds across multiple recreation areas.
Field briefing
Patapsco Valley State Park changes fast with season and elevation.
Before you go
The signature draws are Cascade Falls and the Orange Grove swinging bridge in the busy Avalon area, but the park sprawls across separate recreation areas with over 200 miles of trail for hiking and mountain biking. Plan around a specific area rather than the whole park, arrive early on weekends because popular areas close at capacity, and use the campgrounds for an overnight base near the city.
The landmarks worth the trip. Tap any photo to enlarge.
Weather, crowds, and what the season changes about the trip.
Mild and green, with strong water flow over Cascade Falls and busy trailheads.
Pack Rain shell, layers, and waterproof footwear for creek crossings and muddy trails.
Warm and humid, with shaded river trails, tubing, and capacity closures on busy weekends.
Pack Water, sun protection, bug spray, and an early arrival before areas reach capacity.
Crisp and colorful, prime hiking weather with strong color along the river valley.
Pack Warm layer, headlamp for shorter days, and grippy footwear for leaf-covered rock.
Cold and quiet, good for hiking on clear days with bare-tree river views.
Pack Insulation, traction, and a plan for shorter daylight on the river trails.
Cascade Falls
A multi-tiered waterfall reached by an easy, family-friendly trail from the Orange Grove area of Avalon, one of the park's most popular short hikes.
Orange Grove swinging bridge
A 300-foot suspension footbridge over the Patapsco River near the ruins of the historic Orange Grove Flour Mill, a signature crossing that has been rebuilt over the decades after floods.
200-plus miles of trail across multiple areas
The park spans more than 16,000 acres along 32 miles of river, with over 200 miles of trail for hiking, mountain biking, and horseback riding across the Avalon, Hollofield, Hilton, McKeldin, and other recreation areas.
Put the access rule first: shuttle, parking, timed-entry, or reservation windows should decide the order of the day. For one day in Patapsco Valley State Park, make Cascade Falls the non-negotiable, add Orange Grove swinging bridge only if the first stop runs clean, and keep 200-plus miles of trail across multiple areas as the flexible finish.
Turn Patapsco Valley's conditions into water, pack, and sleep-system decisions.
Build around conditions
Let season, elevation, and weather set the plan.
Plan your trip
4 quick tools, already seeded for Patapsco Valley State Park. Tune the numbers around temperature swings, footing, layers, and how much margin the route needs.
Start with the gear decisions this park changes: footing, weather, camping, and water.
Kit Authority
Patapsco Valley State Park packing list
0 of 23 packed. Check items as you pack, then take this list to the store, trailhead, or campsite.
Pack planning
Use this as a constraint check while you are still shaping the trip. The active checklist becomes useful once your route, dates, and sleep plan are set.
Checklist mode
23 items, grouped for the trip you are actually taking.
The buying guides that match what Patapsco Valley asks of your kit, with our current top picks across budget and use case.
The park has camping at the Hollofield and Hilton areas, with sites for tents and RVs plus camper cabins, a rare overnight option this close to Baltimore. Maryland launched a new park reservation system on February 24, 2026, so book through the official system and confirm current availability. Because the park rings the Baltimore suburbs, abundant hotels and rentals in Ellicott City, Catonsville, and the broader metro area are minutes away when camping is full.
Camping reservations
Camping at the Hollofield and Hilton areas is a rare overnight option this close to the city, and Maryland's new reservation system launched in February 2026, so book through the official platform.
Reviewed June 11, 2026
Booking window
Maryland Park Service launched a new statewide reservation system on February 24, 2026. Reserve campsites and camper cabins through the official Maryland park reservations platform and confirm current availability.
Where to book or verify
Official Maryland Park Service reservation system for Patapsco campsites and camper cabins.
Official Maryland DNR page for the recreation areas, trails, Cascade Falls, and the swinging bridge.
Check for federal campground, backcountry, tour, and permit inventory tied to this park.
Campgrounds to know
Build the arrival around the reservation.
Entry windows, permit pickups, and drive time should be checked before the itinerary gets crowded.
Getting there
Car strategy
Patapsco Valley wraps around the southwestern Baltimore suburbs, with separate entrances for the Avalon, Hollofield, Hilton, McKeldin, and Daniels areas off roads like Route 1, Route 40, and Marriottsville Road, near Elkridge, Ellicott City, and Catonsville.
Car strategy
A car is essential, and because the park is split into distinct areas, plan your route to a specific entrance rather than the park as a whole.
Local movement
The popular Avalon area, home to Cascade Falls and the swinging bridge, can fill and close at capacity on weekends, so arrive early.
Pair this with lodging: choose the base that keeps the reservation or permit pickup from becoming the hardest part of the day.
Cascade Falls is in the Orange Grove section of the Avalon area, reached by an easy, family-friendly trail of about 1.5 miles round trip. It is one of the park's most popular short hikes and pairs well with the nearby Orange Grove swinging bridge over the Patapsco River.
Yes. The day-use fee runs about $3 per vehicle for Maryland residents and $5 per vehicle for non-residents in 2026. Camping is a separate fee, booked through the Maryland park reservation system.
Yes. The park has camping at the Hollofield and Hilton areas, with tent and RV sites plus camper cabins, a rare overnight option this close to Baltimore. Maryland launched a new reservation system on February 24, 2026, so book through the official platform and confirm availability.
Popular areas like Avalon, which holds Cascade Falls and the swinging bridge, can reach vehicle capacity and close temporarily on busy weekends. Arriving early, ideally before 10 a.m., or visiting on weekdays is the reliable way to get in. The park spreads across multiple separate areas, so a full lot at one does not mean the whole park is closed.