Exploring the Greenbelt: Best Trail Runs for Austin Marathoners

For Austin road marathoners, four useful Barton Creek Greenbelt running options are a short out-and-back from Zilker, an outing from Loop 360, a run toward Twin Falls from Gaines Park, and a Hill of Life outing from Trail’s End. Choose your starting point around the run you want, and let conditions determine how far you go.

Training for the Austin Marathon gives you plenty of reasons to know the city’s roads. The Greenbelt introduces a different side of Austin: creekside paths, limestone cliffs, and uneven terrain that asks you to pay attention to more than your watch.

You do not need to cover the entire trail to enjoy it. Here’s how to plan a visit that fits your training week.

Where Can You Run on the Barton Creek Greenbelt?

The City of Austin lists more than 12 miles of trails to explore, with access points along the main 7.5-mile trail. Those figures describe different things: the broader trail network and the main trail, not a single marked loop.

For an unfamiliar route, an out-and-back keeps the plan straightforward. Check the official map, choose a turnaround that suits your experience, and return the way you came.

The outings below are recommendations, not measured routes or official difficulty ratings.

Zilker: Start With a Short Out-and-Back

Trailhead: 2212 William Barton Drive

Choose it for: A first visit without committing to a distant destination.

The Zilker entrance provides access near the beginning of the main trail. Head out along the mapped route and retrace your steps when you are ready to return.

Keep the first visit short enough to learn how the footing feels. Walk rough sections rather than trying to hold your usual road pace. Starting at Zilker does not mean everything ahead is flat or smooth.

For a road runner, this outing is an opportunity to try trails without building the whole day around mileage.

Loop 360: Explore From a Mid-Trail Entrance

Trailhead: 3753 S. Capital of Texas Highway, northbound

Choose it for: An out-and-back starting in the middle portion of the Greenbelt.

The city lists a dedicated parking lot and composting restrooms at the Loop 360 trailhead. Review the map before setting off, choose your direction, and note junctions you will need to recognize on the return.

On a first visit, keep the route simple instead of adding unfamiliar side trails to reach a mileage target.

If your training schedule calls for an easy run, use effort rather than road pace as your guide. Slow down or walk when the terrain requires it.

Gaines Park/MoPac: Head Toward Twin Falls

Trailhead: 3918 S. MoPac Expressway, southbound service road

Choose it for: An outing with Twin Falls as a possible destination.

The city identifies Gaines Park/MoPac as an access point for Twin Falls. Plan an out-and-back toward the falls, but be willing to turn around before reaching them.

Water flow depends on rainfall, so do not expect a flowing waterfall on every visit. Creek conditions can also change quickly. Never make reaching the destination more important than a safe return.

This entrance has limited street parking and no restrooms listed by the city. Sort out those logistics before starting your run.

Trail’s End: Plan Around the Hill of Life

Trailhead: 1712 Camp Craft Road

Choose it for: A hill-focused outing when you are comfortable on uneven trails.

Trail’s End provides access to the Hill of Life. Approach this as a deliberate hill outing rather than assuming it will be an easy substitute for a neighborhood run.

Descend under control and leave time and energy for the return. Hiking is a sensible option when the grade or footing makes running uncomfortable.

If you are new to trails, get familiar with uneven surfaces before adding a demanding hill session.

How Should Trail Running Fit Into Marathon Training?

Use trail running to add variety while keeping the purpose of each training day clear. An easy day should not become a hard effort just because you are trying to match your pavement pace.

For an introduction, consider swapping a short easy run for a conservative trail outing rather than adding extra mileage. Keep road-based sessions for practicing the pacing and fueling you intend to use on race day.

Trail running is still running, not a non-impact cross-training session. If your plan calls for cross-training to reduce running impact, do not assume a rocky trail outing serves the same purpose.

Need help fitting different sessions into your week? Explore Austin Marathon’s training resources and local running programs.

What Should You Check Before Heading Out?

Review the forecast, official map, and posted notices. The city warns that water levels can change quickly, even when conditions appear dry. Do not enter flooded trails or unsafe creek crossings.

Bring your own water, footwear suited to the surface, and a saved map. For a first visit, choose daylight: the Greenbelt has limited to no lighting.

Share the trail courteously. Announce passes, stay on established paths, and carry out your trash. The city notes that trash receptacles are located only at trailheads.

Barton Creek Greenbelt Running FAQs

How long is the Barton Creek Greenbelt trail?

The City of Austin identifies a main 7.5-mile trail and more than 12 miles of trails across the broader network. Your outing’s distance depends on your entrance, route, and turnaround point.

Is the Greenbelt suitable for beginner trail runners?

A short outing may suit a beginner who is comfortable walking rough sections. No entrance guarantees uniformly easy terrain. Review the map, assess conditions, and keep your first route conservative.

Which trailhead provides access to Twin Falls?

The city lists Gaines Park/MoPac at 3918 S. MoPac Expressway, on the southbound service road, as a Twin Falls access point. Parking is limited, and no restrooms are listed there.

Where do you access the Hill of Life?

Use the Trail’s End/Camp Craft Road entrance at 1712 Camp Craft Road. Check posted parking requirements and the trail map before starting.

Is trail running cross-training for marathon runners?

Trail running changes the terrain, but it remains a running workout. It should not be treated as a non-impact alternative when your training plan calls for a break from running.

Pick Your Entrance, Then Plan Your Run

For your first Greenbelt visit, choose one entrance and a simple out-and-back. Give yourself room to walk, check the map, or turn around early.

The roads will still be there for your next pace workout. This run is a chance to get to know another part of Austin.

Trailhead addresses, facilities, and trail-length information come from the City of Austin’s Barton Creek Greenbelt guide. Check current notices and conditions before visiting.