Trail Running calendar near San Marcos 2025-2026

We have found 53 Trailruns within 80 miles of San Marcos. See below where and when you can find the races.

Discover scenic trails at Reveille Peak Ranch on April 25, 2026 with distances from a 1 mile youth run up to a 52 mile ultra, plus options for every runner. Expect great swag for early sign ups and a friendly Texas trail vibe.

May 2026

Desert Wolf near Austin at Flat Creek Crossing Ranch in Johnson City offers 5K to 100K trail and ultra runs across rugged ranch and Pedernales Falls Park terrain. Expect rocky single track, remote stretches, full aid and finisher buckles.

Run the Wiener Run 5K and 10K at Southside Lions Park for a festive, dog loving community race with a live DJ, awards and hot dogs at the finish. Proceeds support a local wiener dog rescue and pet supply collection.

Experience rugged Texas trails at the Pechanga Trail Run in Spicewood on May 2, 2026, with distances from 50k and marathon to 5k and a youth run. Festive name and great scenery make this a can’t miss community race day.

Texas Switchback returns to Johnson City, TX on May 2, 2026, with 5k, 10k, half marathon and marathon options on scenic single track trails. Enjoy volunteer support, live bluegrass, a local food truck and a post race dip in Flat Creek.

Explore scenic single track through the Lost Pines at Bastrop State Park on May 9 and 10, with distances from 5K to 50K plus rucking and family races. New start, revised routes and double day challenges promise an unmissable trail weekend.

Run beneath the stars at Spider Mountain Trail Race in Burnet, Texas on May 16 and 17, 2026. Lift served trails and options from youth miles to 12 hour endurance races plus ruck and team relays make this a weekend of spirited trail running.

On May 17, 2026 tackle classic central Texas singletrack at the Armadillo Trail Run, part of Spartan Trail weekend at Reveille Peak Ranch. Expect slickrock and cactus sections on a rewarding 10K through scenic Hill Country.

Join River's Edge Trail Race on May 23, 2026 at the Katy Trailhead in Georgetown. Trail runs from 5 miles to 50 km, youth races and mountain bike courses follow scenic single track along the San Gabriel River. All ages welcome.

Enjoy a scenic all terrain 5K across Luckenbach trails and stream crossings, with finisher medal and race swag. Stay for live Texas style country music and a separate Beer Mile for participants 21 and up.

Run through the decades in San Antonio with a fun 1980s themed half marathon and shorter distances, complete with a costume contest and live 80s tunes. Enjoy medals, shirts, trails and a festive community vibe for all paces.

June 2026

Run the Great Springs Trail Race at Canyon Lake on June 6, 2026, with distances from a challenging 50K to a family friendly youth mile. Enjoy scenic Madrone Trail views and on site post race festivities.

Experience moonlit trails at Pedernales Falls State Park on June 6 and 7, 2026 with night races from a youth mile to a 60K. Join the Capt'n Karl's community for scenic evening runs, a youth race, and referral rewards for registrants.

Join the Red, White and Blue Half Marathon in San Antonio on June 27, 2026 for a festive race day. Options span from a kids dash to a 13.1 mile half marathon, with volunteer then run and virtual choices available.

Tackle rocky, technical trails at Capt'n Karl's Trail Series Muleshoe Bend, June 27 to 28, 2026 in Spicewood TX. Part of the Night Trail Run Series, it offers distances from 60K to 5K through wooded, hilly terrain for all abilities.

July 2026

Rise in the Pines on July 18, 2026 at Rocky Hill Ranch offers a scenic 10k loop through shaded pines and hills, with distances from 10k to an epic 200k and relay options. Enjoy full aid, chip timing, free photos, custom medal and swag.

Take on rugged trails at Pearsall Park in San Antonio on July 19, 2026 with 25k, 10k, and 5k options for every trail runner. Finishers get a custom medal, race singlet and taco breakfast while DJs and photographers keep the party going.

August 2026

Run Capt'n Karl's at Reveille Peak Ranch near Burnet, Texas on August 8 and 9, 2026 for a rugged, scenic weekend across rock domes, single track and wooded hills. Distances span 1 mile youth to 60K on technical terrain with steep climbs.

Summer Meltdown in San Antonio's O. P. Schnabel Park offers races from a kids dash to a chip timed half, plus volunteer then run and virtual options. Celebrate your finish with snacks and drinks at the post race rally tent.

September 2026

Run the Mellow Trail Race Sept 12 2026 at Pace Bend Park near Spicewood Texas with a scenic finish on Lake Travis. Choose from 26.2 mile, 13.1 mile, 10k, 5k and a youth mile on technical rocky trails with staffed aid stations.