Heatwave Half Marathon - San Antonio | San Antonio, TX, United States

About the Event

Join us for the Heatwave Half Marathon, 10K, & 5K!
A sun-soaked summer challenge that’s perfect for the whole family.

The fun includes –

Great Swag – designer shirt & custom medal
Chip-timing with live results and awards
Free photos
FREE ice cream at the finish to help you cool off
Plenty of hot fun in the summer sun!

Grab your friends and family—you won’t want to miss this one!

Can’t make the race? No problem! We offer a virtual race option where you can run anywhere, at any time, and still earn the fun swag!

Youth-based pricing is available: ages 12 & under are only $17!

Half Marathon/10K/5K registration includes a custom bib, designer shirt, and an awesome finisher medal!
1 Mile registration is untimed and includes a custom bib, designer shirt, and an awesome finisher medal!
Kid’s Dash is a fun, untimed dash for ages 10 and under. Registration includes a mini bib, youth-sized shirt, and a specially crafted medal for our youngest runners! (If your child wants to run the kid’s dash without swag, they’re welcome to run free on race day!)

Register by midnight on Thursday, two Thursdays before race day, to guarantee your shirt!

Races Offered

1 Mile

Aug 01, 2026

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Distance — 1 Miles

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Type — Running

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07:00

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$22.00

10 K

Aug 01, 2026

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Distance — 10K

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Type — Running

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07:00

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$31.00

5 K

Aug 01, 2026

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Distance — 5K

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Type — Running

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07:00

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$31.00

Half-Marathon

Aug 01, 2026

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Distance — 13.1 Miles

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Type — Running

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07:00

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$56.00

Half-Marathon Relay

Aug 01, 2026

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Distance — 13.1 Miles

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Type — Running

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07:00

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$56.00

Kids Dash

Aug 01, 2026

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Distance — 50m

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Type — Running

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07:00

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$17.00

Virtual Race

Aug 01, 2026

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Distance — Virtual Race

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Type — Running

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07:00

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$42.00

Volunteer Then Run

Aug 01, 2026

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Distance — Volunteer Then Run

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Type — Running

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07:00

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$17.00

Weather History

These values represent the 3-year monthly averages for August in San Antonio.

thermostat Temperature

25.6° / 37.3°

wb_sunny Feels like

29.0° / 37.8°

light_mode Avg sunshine hours

12h 18m

water_drop Avg rainfall

0.7 mm

ac_unit Avg snowfall

—

air Avg wind speed

10.1 km/h (Light breeze)

opacity Sweat loss rate

High

terrain Course conditions

Hard and dry surface

sunny Max UV Index

Very High (8.4)

humidity_mid Humidity

55.8%

wb_twilight Sunrise

07:02

nightlight Sunset

20:12

About San Antonio

Learn more about the host city, San Antonio.

San Antonio is the second largest city in the state of Texas and the 7th largest in the United States. It's the 24th largest metropolitan area in the country. Visited by more than 31 million annual visitors, San Antonio is a beautiful city at the axis of three different geological terrains: Hill Country, South Texas Plains and Prairie and Lakes. There's a lot to do in this city: fine art museums, historical missions and plenty of amusement parks in addition to great dining and lots of drinking. The culture and people are vibrant and interesting. San Antonio's downtown is one of the most lively in the nation.