3 races · updated Oct 22, 2026

October 2026

Oct24Sat

Zombie 5K Run

Sat, Oct 24 · 5:00 PM · Harlingen, TX · $20–$30 · via RunSignup

5KOnline registration closed

Details

Oct31Sat

Tri For All

Sat, Oct 31 · 7:00 AM · Harlingen, TX · $75 (relay $130) · via Athlete Guild

Competitive sprint: 400 yd swim / 12 mi bike / 2 mi runRecreational: 200 yd / 6 mi / 1 mi3-person relayTri & Duathlon

March 2027

Mar20Sat

Resurgence Trail Run

Sat, Mar 20 · 7:00 AM · Harlingen, TX · $10–$90 · via RunSignup

5K10KUltraKidsKidsTrail

Race-day gear

What Valley racers actually use when it's 80°F and humid at 7 AM.

Energy gels (GU)30–60 g carbs/hour for anything longer than an hour.
Electrolyte mix (LMNT)Valley heat and humidity mean big sweat-salt losses.
Anti-chafe balm (Body Glide)Saves you on humid race mornings.
Race number beltNo safety pins; essential for tri transitions.
Tri suitSwim, bike and run in one outfit.
Elastic no-tie lacesFaster T2 in triathlons.
Running sunglassesSouth Texas sun, even in winter.
Sweat-wicking running capShade and sweat control.

About RGV Races

A free, daily-updated calendar of running, walking, triathlon, duathlon, trail and kids races across the Rio Grande Valley of South Texas: Cameron, Hidalgo, Starr and Willacy counties. Races come from RunSignup's public race listings plus hand-checked major events registered elsewhere (ACTIVE, Athlete Guild, RedPodium). Always confirm details on the official race page before you register. Race director? Listing on RunSignup gets your race here automatically.