2026 San Antonio Marathon
- Date
- December 4–6, 2026
- Distance
- 2026 - Marathon · 2026 - Half Marathon · 2026 - 5K
From the Organizer
The San Antonio Marathon, presented by San Antonio Sports, celebrates the spirit and heritage of our city. In collaboration with the City of San Antonio, Visit San Antonio, and Centro, this signature event invites you to experience a premier running celebration in the heart of San Antonio - Where Every Step Tells a Story.
Events
Weather
Typical Conditions
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
66°
Typical Low
44°
Chance of Rain
25%
Based on US Climate Normals data from San Antonio Incarnate Word, 2 mi from the venue.
Host City
About San Antonio, TX
Population
1,458,954
as of 2023
Elevation
781 ft
Nearest Airport
SAT
San Antonio International Airport · 5 mi
Time Zone
Central Time
From Endurance Grid
A big city race. Expect multiple lodging options and plenty to do the day before.
Race Location
Your Next Start Line
What Are You
Waiting For?
Every finish line starts with a single decision. Claim your spot at 2026 San Antonio Marathon, put it on the calendar, and turn “someday” into a start date.
179
Days to train
- Race
- 2026 San Antonio Marathon
- Date
- December 4–6, 2026
Coming Up
More Running races near San Antonio, TX
Y'all Means All 5K Race/Walk
5K
Less than a mile away
9th Annual The Longest Day 5K/10K/0.5k Beer Run by Beard vs Beans
10K · 5K
Less than a mile away
Texas Sun Showdown Half Marathon, Relay & 5k
Half Marathon · 5K
Less than a mile away
The Big Kahuna 5K, 10K - San Antonio
10K · 5K
Less than a mile away
From Endurance Grid
About This Sport
Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.
The half marathon is the distance where you find out what you're actually made of. Long enough to demand real preparation. Short enough that it doesn't consume your life to train for it. Most people who run their first half describe it as the race that changed their relationship with what they're capable of. Once you cross this finish line, the bar moves. That's not a warning — that's the point.
Race day energy varies by event size, but the finish line feeling is the same regardless. Big races keep the noise going the whole way. Smaller races give you stretches where it's just you and the miles — and that solitude becomes its own kind of fuel.
The half marathon rewards people who show up for the boring training miles.
How long to train: 10–14 weeks. If you're already running consistently, 10 weeks of structured buildup is enough. If you're building from a casual base, give yourself 14.
Running
From 5K to marathon, running races are the most accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Frequently Asked Questions (FAQs)
- What is the 2026 San Antonio Marathon?
- 2026 San Antonio Marathon is a running race held in San Antonio, Texas on December 4, 2026. It is one of the many endurance events listed on Endurance Grid, a multi-sport endurance event calendar covering running races, triathlons, HYROX, and more endurance sports across the United States. Find more running races near you or explore our sports guides to learn what race day actually feels like.
- When and where is the 2026 San Antonio Marathon?
- Friday, December 4, 2026 in San Antonio, Texas at 434 S. Alamo Street, San Antonio, TX. Check the event page for exact start times and wave schedules.
- How do I register for the 2026 San Antonio Marathon?
- Registration is handled through the event's registration page. Confirm pricing and distances there, and sign up.
2026 San Antonio Marathon
Dec 4, 2026