Texans know how fast concrete and traffic can wear you down. Right in the middle of the Dallas–Fort Worth metroplex, River Legacy Park is a 1,300-acre sanctuary hugging the Trinity River in Arlington — heavy forest canopy, miles of multi-use trails, and abundant wildlife. It's a fantastic hike-and-bike spot, but if you want to actually swim, you need to head south. The spring-fed rivers of the Texas Hill Country — especially the San Marcos River near Austin — are where you go to submerge yourself in crystal-clear, 72°F water.
This guide maps out how to enjoy the Trinity River basin in Arlington and then turn the trip into a legendary road-trip weekend that ends at one of the best swimming holes near Austin.
Discovering River Legacy Park: North Texas' Premier Urban Oasis
Tucked away in north Arlington, River Legacy Park is what happens when a city protects its wild spaces instead of paving them. The park guards the fertile floodplains along the West Fork of the Trinity River and acts as a green wildlife corridor through the middle of the Metroplex. Bur oaks, pecans, and towering cedar elms shade the forest floor, and you'll spot bobcats, coyotes, armadillos, and dozens of bird species on a quiet morning walk.
A Visitor Guide to River Legacy Park in Arlington
The main entrance is at 701 NW Green Oaks Boulevard, open daily 5:00 AM–10:00 PM. Entry and parking are free, though spots fill up fast on nice spring and fall weekends.
Hiking and Biking Trails
- Paved multi-use trails: 8+ miles of wide, flat, ADA-accessible paths — perfect for strollers, road bikes, skates, and jogging.
- Off-road singletrack: 10 miles maintained by DORBA, from easy beginner loops to technical berms, climbs, and drops.
The River Legacy Living Science Center
An eco-friendly building set in the forest canopy with hands-on environmental exhibits, live aquariums and terrariums, an indoor treehouse bird-watching spot, and guided nature walks, seasonal festivals, and outdoor camps.
Paddling the Trinity River
The West Fork of the Trinity cuts through the property with a dedicated canoe and kayak launch. Water levels can spike quickly after storms, so check local flow rates and safety alerts before you launch.
A Tale of Two Waters: Trinity River vs. Hill Country Rivers
Texas is big enough to hold two very different worlds of water. Here's how the Trinity at River Legacy Park stacks up against the spring-fed San Marcos River south of Austin.
| Feature | Trinity River (Arlington) | San Marcos River (Hill Country) |
|---|---|---|
| Water source | Rain runoff & urban drainage | Edwards Aquifer springs |
| Clarity | Turbid, sediment-heavy | Crystal-clear |
| Temperature | Variable — hot in summer | Constant 72°F year-round |
| Best for | Biking, hiking, birding | Swimming, tubing, kayaking, glamping |
| Bottom | Mud & silt | Limestone gravel & sand |
Why Austin, Dallas & Houston Travelers Choose a Hill Country Escape
Big-city concrete holds heat like an oven. Public pools and city parks don't cut it when July hits. The Texas Hill Country delivers the real cure: rivers in San Marcos, Martindale, and Kingsbury flow straight from the Edwards Aquifer and stay a crisp 72°F even in August. From Austin it's a 45-minute drive — closer than most locals realize. From Houston it's about 3 hours, and from DFW roughly 3½.
The Perfect 3-Day Road Trip Itinerary
Day 1: Arlington Trails, Then Head South
Start early at River Legacy Park. Walk or ride 3 miles under the hardwood canopy, then check out the Living Science Center. Grab lunch in Arlington or Fort Worth and drive south down I-35 — about 3 to 3½ hours to San Marcos, depending on Austin traffic. Unpack at your riverfront cabin and grab dinner at a local brewery.
Day 2: Swim, Tube & Kayak the San Marcos
Breakfast tacos, then straight to the water. Grab an inner tube or kayak and drift down the spring-fed San Marcos — clear enough to watch the limestone gravel slide by beneath your feet, with small rapids that add just enough splash. Spark the charcoal at your private cabana for dinner and sleep in an AC cabin at Son's Blue River Camp.
Day 3: Small Towns & the Drive Home
Coffee on the river, then take the scenic route home. Wander historic Gruene (oldest wooden dance hall in Texas) or roll into Luling for a butcher-paper block of brisket before the drive back to Houston or DFW.
Choosing Your Basecamp: Lodging Along the River
Where you bunk sets the tone. KOAs and Camp Fimfo are fine for predictable, high-density family camping — but big rigs and theme-park noise can drown out the actual river. If you want the real Hill Country vibe without sweating through a sleeping bag, Son's Blue River Camp in Kingsbury sits on a quiet bend of the San Marcos and gives you:
- Air-conditioned glamping cabins with real mattresses, right on the water.
- Private cabana rentals — wooden shelters with lounge seating and personal grills.
- On-site tubing and kayaking with shuttle service — no crowded parking lots.
- Direct river access from your front door into clear, 72°F spring-fed water.
Packing Checklist for a Dual-Region Trip
- For River Legacy Park: hiking shoes, bug spray, bike, camera, reusable water bottle.
- For the Hill Country river: water shoes with grip, swimwear, dry bag for phone and keys, spare dry clothes, and a cooler for the cabana grill.
- Check river flow rates (CFS) before launching — mid-range flows make for effortless floats.
- Sunscreen, wide-brim hat, polarized sunglasses, and twice as much water as you think you need.
Frequently Asked Questions
Where is River Legacy Park located and how do I get there?
River Legacy Park is in north Arlington, in the center of the Dallas–Fort Worth metroplex. The main entrance is 701 NW Green Oaks Boulevard.
Is there an entry fee or parking fee to visit River Legacy Park?
No. Entry and parking are free. Parking fills up quickly on nice spring and fall weekends, so arrive early.
What are the operating hours for River Legacy Park?
The park is open daily from 5:00 AM to 10:00 PM.
Does River Legacy Park have paved trails for strollers and road biking?
Yes — more than 8 miles of wide, flat, ADA-accessible paved multi-use trails that are ideal for strollers, road bikes, skates, and jogging.
Are there mountain biking trails at River Legacy Park?
Yes. About 10 miles of singletrack maintained by the Dallas Off-Road Bicycle Association (DORBA), ranging from beginner loops to technical sections with berms, climbs, and drops.
Can I swim in the Trinity River at River Legacy Park?
Swimming isn't recommended. The Trinity has a muddy bottom and variable water quality since it drains a large urban area. For clear, spring-fed swimming and tubing, head south to Hill Country rivers like the San Marcos.
What's the best spring-fed river swimming spot near Austin?
The San Marcos River near Kingsbury — about 45 minutes south of Austin — stays a crisp 72°F year-round with a limestone-and-gravel bottom. Son's Blue River Camp offers private cabanas, unlimited tubing wristbands, and direct river access.
Pair a quiet morning on the shaded trails of River Legacy Park with a weekend at the 72° waters of Son's Blue River Camp, and you'll have hit the best of Texas — city forest and Hill Country river — in a single trip.