How to Hike the McKinney Falls Upper Falls Swim

McKinney Falls State Park, nestled in the heart of Austin, Texas, is a hidden gem that offers visitors a rare blend of natural beauty, geological wonder, and accessible outdoor adventure. Among its most celebrated attractions is the Upper Falls Swim — a serene, crystal-clear pool formed by the cascading waters of Onion Creek, surrounded by limestone cliffs and shaded by live oaks and sycamores. While many visitors come to picnic or photograph the falls, few realize that reaching the Upper Falls requires a short but rewarding hike. This guide will walk you through every step of how to hike the McKinney Falls Upper Falls Swim, from planning your route to safely enjoying the swim, with expert insights, practical tips, and real-world examples to ensure a seamless, memorable experience.

Understanding how to hike the McKinney Falls Upper Falls Swim isn’t just about navigation — it’s about respecting the environment, preparing for variable conditions, and appreciating the unique ecosystem that makes this location so special. Whether you’re a local seeking a weekend escape or a traveler exploring central Texas, mastering this hike ensures you experience the park’s most pristine and tranquil spot without the crowds that gather at the lower falls. This tutorial is designed for hikers of all levels, offering clear, actionable advice grounded in local knowledge and environmental best practices.

Step-by-Step Guide

1. Plan Your Visit: Timing and Permits

Before setting foot on the trail, preparation is key. McKinney Falls State Park is open daily from 8:00 a.m. to 10:00 p.m., with the visitor center operating from 9:00 a.m. to 5:00 p.m. There is no entrance fee for Texas residents, but out-of-state visitors must pay a $7 day-use fee per vehicle. Reservations are not required for day visits, but arriving early — especially on weekends or holidays — is strongly recommended to secure parking. The main parking lot fills quickly by 10:00 a.m., and overflow parking may require a 10-minute walk to the trailhead.

Check the Texas Parks and Wildlife Department (TPWD) website for alerts regarding trail closures, water conditions, or wildlife activity. During periods of heavy rainfall, the creek may rise rapidly, making the swim area unsafe. Conversely, during droughts, water levels may be too low for swimming. Aim to visit between late spring and early fall when water levels are optimal and temperatures are warm enough for swimming, typically from May through September.

2. Start at the Main Visitor Center

Your hike begins at the McKinney Falls State Park Visitor Center, located at the park’s entrance off FM 1825. After paying any applicable fees and picking up a free park map (highly recommended), walk toward the main trailhead kiosk just south of the visitor center. Look for the clearly marked “Upper Falls Trail” sign — a brown, wooden sign with white lettering and a hiking icon. This trail is part of the park’s designated “Nature Trail” system and is marked with blue blazes on trees and rocks.

Do not confuse this with the “Lower Falls Trail,” which leads to the more popular, heavily trafficked swimming area. The Upper Falls trail is less crowded and requires slightly more navigation, but rewards hikers with solitude and unspoiled scenery. Begin walking on the paved path that leads past the historic McKinney homestead ruins — a fascinating glimpse into 19th-century Texas life. After approximately 150 yards, the pavement ends, and the trail becomes natural dirt and limestone.

3. Follow the Nature Trail to the First Junction

The initial 0.3-mile stretch of the trail is relatively flat and well-maintained, winding gently through a forest of cedar elms, post oaks, and prickly pear cactus. Listen for the distant sound of running water — it will grow louder as you approach the creek. Along this section, you’ll pass several interpretive signs detailing native flora and fauna, including information about the endangered Texas blind salamander and the role of limestone aquifers in sustaining the creek.

At the 0.3-mile mark, you’ll reach your first junction. Here, the trail splits: left leads to the Lower Falls and the main swimming area; right continues toward the Upper Falls. Turn right onto the trail marked with a blue diamond. This path becomes narrower and more rugged. Be cautious of loose rocks and exposed tree roots, especially after rain. Wear sturdy hiking shoes with grip — sandals or flip-flops are not recommended.

4. Navigate the Steeper Section and Creek Crossing

From the junction, the trail ascends gently for another 0.2 miles before descending toward Onion Creek. This descent is the most challenging part of the hike. The path becomes rocky and uneven, with several switchbacks carved into the hillside. Use the handrails installed by TPWD where available, and avoid shortcuts — they erode the soil and damage native vegetation.

At approximately 0.7 miles from the start, you’ll reach the creek. Here, you’ll encounter a wooden footbridge that spans the shallowest point of the creek. Cross carefully — the bridge can be slippery when wet. Once across, the trail continues along the north bank of the creek, now following the water’s edge. The sound of the falls becomes unmistakable: a soft, rhythmic cascade echoing off the limestone walls.

5. Reach the Upper Falls Swim Area

At 0.9 miles, the trail opens into a small, shaded clearing — your destination. The Upper Falls Swim Area is a natural amphitheater formed by a 15-foot drop in Onion Creek, where water tumbles over moss-covered limestone into a deep, clear pool approximately 30 feet wide and 8 feet deep at its center. The water is consistently cool, even in midsummer, due to its origin in the Edwards Aquifer. Surrounding the pool are smooth, sun-warmed rocks perfect for lounging, and overhanging branches provide natural shade.

Do not attempt to climb the falls themselves — the rock face is steep, slippery, and unstable. Swimming is permitted only in the designated pool area. The current is gentle, making it ideal for families and novice swimmers. However, always test the water depth before diving — submerged rocks are common.

6. Exit and Return

When you’re ready to leave, retrace your steps along the same trail. The return journey is easier as you’re walking uphill, but fatigue can set in — stay hydrated and take breaks as needed. If you’re visiting during peak hours, consider extending your hike by continuing past the visitor center to the “Falls Overlook Trail,” a 0.5-mile loop that offers panoramic views of both Upper and Lower Falls. This optional detour adds about 20 minutes to your outing but is well worth the effort for photographers and nature enthusiasts.

Best Practices

1. Respect the Environment

McKinney Falls is part of a fragile karst ecosystem. Limestone formations are easily damaged by trampling, and the water quality depends on minimal human impact. Never litter — pack out everything you bring in, including food wrappers and biodegradable items like fruit peels. Avoid using soap, sunscreen, or insect repellent in or near the water. Even “biodegradable” products can disrupt aquatic microorganisms. Use a reef-safe sunscreen before arriving and wash off at home.

2. Leave No Trace Principles

Adhere to the seven Leave No Trace principles:

• Plan ahead and prepare
• Travel and camp on durable surfaces
• Dispose of waste properly
• Leave what you find
• Minimize campfire impacts
• Respect wildlife
• Be considerate of other visitors

Do not carve names into trees or rocks. Do not collect rocks, shells, or plants. The park’s natural artifacts are protected under state law. Even small souvenirs remove critical elements from the ecosystem.

3. Water Safety and Supervision

The Upper Falls pool is generally safe, but conditions change rapidly. Never swim alone. Always supervise children, even if they are strong swimmers — the pool’s depth varies, and underwater rocks can cause slips. Avoid jumping or diving unless you’ve confirmed the depth is at least 8 feet. Signs of shallow water include visible rocks or ripples on the surface. If unsure, enter feet first.

After heavy rain, the creek can swell and become dangerous. Check the TPWD website or call the park office for current conditions. Flash flooding is rare but possible during summer thunderstorms. If you hear a rumbling or notice the water turning muddy, evacuate immediately.

4. Dress Appropriately

Wear moisture-wicking, quick-dry clothing. A swimsuit under lightweight shorts and a rash guard is ideal. A wide-brimmed hat and UV-blocking sunglasses protect against sun exposure. Bring a towel, dry clothes, and a change of shoes for the return hike. Even in summer, temperatures drop quickly after sunset — bring a light jacket if you plan to stay past 6 p.m.

5. Hydration and Nutrition

There are no water fountains or restrooms at the Upper Falls. Carry at least one liter of water per person, and consider electrolyte tablets if hiking in high heat. Pack light, non-perishable snacks like trail mix, energy bars, or fruit. Avoid sugary drinks — they can cause energy crashes. Eat before or after your swim, not immediately before entering the water, to prevent cramps.

6. Wildlife Awareness

McKinney Falls is home to white-tailed deer, raccoons, armadillos, and numerous bird species, including the endangered golden-cheeked warbler. Observe wildlife from a distance. Do not feed animals — doing so alters their natural behavior and can lead to aggression. Snakes, including non-venomous water snakes and the occasional copperhead, may be present near rocks or logs. Give them space; they will not attack unless provoked.

Tools and Resources

1. Official Park Maps and Apps

The Texas Parks and Wildlife Department provides free, downloadable maps of McKinney Falls State Park on their website: tpwd.texas.gov/state-parks/mckinney-falls. The interactive map includes trail lengths, elevation profiles, restroom locations, and water sources. For offline use, download the “TPWD Explorer” app — it works without cellular service and includes GPS tracking of your location on the trail.

2. Weather and Water Condition Trackers

Use the National Weather Service’s Austin forecast tool (weather.gov/ewx) to monitor temperature, humidity, and thunderstorm potential. For real-time creek levels, visit the USGS Water Data for Texas portal and search for “Onion Creek at McKinney Falls.” This site provides live data on flow rate (cfs — cubic feet per second). Safe swimming levels are between 10–50 cfs. Above 100 cfs, the current becomes hazardous.

3. Navigation Tools

While the trail is well-marked, a GPS-enabled device or smartphone with offline maps (Google Maps offline mode, AllTrails Pro, or Gaia GPS) adds confidence. Set a waypoint at the Upper Falls to ensure you can find your way back if visibility is reduced by fog or overcast conditions. Always carry a backup power bank — cell service is spotty in the canyon.

4. Recommended Gear Checklist

Essential items for a safe and enjoyable hike:

• Sturdy hiking shoes or trail runners with grip
• Swimsuit and quick-dry towel
• At least 1 liter of water per person
• Reusable water bottle with filter (optional)
• UV-protective clothing and sunscreen (reef-safe)
• Wide-brimmed hat and sunglasses
• Lightweight daypack
• First-aid kit (bandages, antiseptic wipes, tweezers)
• Whistle (for emergencies)
• Camera or smartphone with waterproof case
• Light jacket or windbreaker
• Trash bag (for all waste)

5. Educational Resources

Deepen your appreciation of the area with these free resources:

• “The Geology of the Edwards Plateau” — TPWD publication available online
• “Native Plants of Central Texas” — by Lyle Bingham (free PDF from Lady Bird Johnson Wildflower Center)
• McKinney Falls Audio Tour — available via the park’s QR code kiosks or on Spotify as “Texas State Parks: McKinney Falls”

Real Examples

Example 1: The Family Outing — Sarah and the Kids

Sarah, a mother of two from Round Rock, planned her first McKinney Falls trip with her 8-year-old daughter and 5-year-old son. She arrived at 8:30 a.m. on a Saturday, secured a spot near the visitor center, and followed the Upper Falls trail with the printed map. Her children were fascinated by the interpretive signs and spotted a blue jay and a family of armadillos along the way.

At the swim area, Sarah tested the water depth with a stick and let her kids enter slowly. They splashed for 45 minutes, then dried off on the warm rocks while eating granola bars. Sarah kept a close eye on the water level — it was 22 cfs, well within the safe range. On the return, they took the Falls Overlook loop and captured photos of both waterfalls from above. “It felt like we had the whole park to ourselves,” Sarah said. “The kids didn’t want to leave.”

Example 2: The Solo Hiker — Marcus, the Photographer

Marcus, a landscape photographer from San Antonio, visited McKinney Falls at dawn in early June to capture the Upper Falls in golden hour light. He arrived at 5:30 a.m., when the park was nearly empty. Using a tripod and polarizing filter, he shot the water cascading over mossy limestone with the sun just breaking through the canopy.

He hiked the trail with a GoPro mounted on his chest to record ambient sound — the trickle of water, birdsong, and distant wind. He used the USGS water data app to confirm the flow was 18 cfs. After 90 minutes of shooting, he packed up quietly and left no trace. “The silence up there,” he said, “is the kind you can’t edit into a photo. You have to be there.”

Example 3: The Group Challenge — Austin Hiking Club

A group of 12 members from the Austin Hiking Club organized a monthly “Hidden Falls” event. They chose McKinney Falls Upper Falls as their June destination. They split into pairs for safety, carried extra water, and brought a portable water filter to refill bottles from the creek — a practice they’ve adopted since learning the aquifer-fed water is naturally filtered by limestone.

They extended their hike to include the “Hike and Clean” initiative, picking up three plastic bottles and a discarded food wrapper left by others. One member, a biology student, identified a rare Texas spadefoot toad near the trail. “We didn’t just hike,” said their leader. “We learned. And we left it better than we found it.”

FAQs

Is the Upper Falls Swim safe for children?

Yes, the Upper Falls Swim is safe for children when properly supervised. The water is shallow near the edges (2–3 feet) and deepens gradually toward the center. Always test depth before allowing children to swim. Avoid areas with strong current or submerged rocks. The pool is calmer than the Lower Falls, making it ideal for younger swimmers.

How long does the hike take?

The round-trip hike to the Upper Falls and back is approximately 1.8 miles and takes between 60 to 90 minutes at a moderate pace. Including time for swimming, photography, and rest, plan for 2 to 3 hours total. Allow extra time if you’re hiking with children or taking photos.

Can I bring my dog?

No, pets are not permitted on the Upper Falls trail or in the swim area. This rule protects native wildlife and prevents contamination of the aquifer-fed water. Service animals are allowed but must remain on a leash at all times and are restricted from swimming.

Is there a fee to swim at Upper Falls?

No, swimming is included in the park’s day-use fee. There is no separate charge for accessing the Upper Falls swim area. The same fee applies whether you visit the Lower Falls or Upper Falls.

Are there restrooms at the Upper Falls?

No. The nearest restrooms are located at the visitor center and near the Lower Falls picnic area. Plan accordingly — use facilities before starting your hike.

Can I camp overnight near the Upper Falls?

No. Overnight camping is only permitted in designated campsites within the park, which are located away from the creek. The Upper Falls area is strictly a day-use zone to protect water quality and wildlife.

What’s the best time of year to visit?

Spring (April–May) and early fall (September–October) offer the most comfortable temperatures and reliable water levels. Summer (June–August) is ideal for swimming but can be hot and humid. Winter visits are possible but the water may be too cold for swimming.

What should I do if I see a snake?

Stay calm and slowly back away. Do not attempt to move, touch, or photograph the snake. Most snakes in the area are non-venomous and will retreat if given space. Copperheads and rattlesnakes are rare but possible — if you hear a rattle, freeze and locate the sound before moving.

Can I bring a kayak or paddleboard?

No. Kayaks, paddleboards, and other watercraft are prohibited in Onion Creek within McKinney Falls State Park. The creek is too narrow and shallow for safe navigation, and motorized or non-motorized craft can disturb aquatic life and erode banks.

Is the trail accessible for people with mobility challenges?

The Upper Falls trail is not wheelchair accessible due to its natural, uneven surface and steep sections. The Lower Falls area has a paved, accessible path to a viewing platform. For visitors with mobility concerns, the Lower Falls offers a safer, easier experience with accessible restrooms and picnic areas.

Conclusion

Hiking to the McKinney Falls Upper Falls Swim is more than a physical journey — it’s an immersion into the quiet, enduring beauty of Texas’ natural landscape. This trail, though modest in length, offers a profound connection to the land: the coolness of aquifer-fed water, the texture of ancient limestone, the whisper of wind through live oaks, and the solitude of a hidden pool untouched by crowds.

By following this guide, you’re not just learning how to navigate a trail — you’re learning how to honor it. Every step you take, every drop of water you respect, every piece of trash you carry out contributes to preserving this sanctuary for future generations. Whether you’re a first-time visitor or a seasoned hiker, the Upper Falls offers a rare gift: the chance to pause, to breathe, and to be reminded of nature’s quiet power.

As you prepare for your next visit, remember: the best trails are not the ones that are easiest to find, but the ones that leave you changed. The Upper Falls Swim doesn’t just invite you to swim — it invites you to listen, to observe, and to carry its peace with you long after you’ve left the trail.

Go prepared. Go respectfully. And above all — go often.