2 races · updated Oct 22, 2026

January 2027

Jan31Sun

Tenth Annual Laguna Vista "Du It By The Bay" Duathlon

Sun, Jan 31 · 8:00 AM · Port Isabel, TX · $65–$85 · via RunSignup

DuathlonTri & Duathlon

April 2027

Apr10Sat

Causeway Run & Walk (Queen Isabella Causeway)

Sat, Apr 10 · Port Isabel, TX · via RedPodium · race info

10K5K Run/WalkDate announced; registration not open yet

Details

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.