San Antonio is stepping up as a running destination with the debut of the SATX Marathon, set to replace the Rock 'n' Roll Marathon after 16 years. Why it matters: The SATX Marathon, scheduled for Dec.

The city and its nonprofit sports commission, SA Sports, has hired a firm, the Trust Group, to manage the marathon, the same way New York and Boston manage theirs. Also, a respected veteran marathoner will help design the marathon course.

Keflezighi kicked off the unveiling of the new San Antonio Marathon Monday night. He joined hundreds of local runners in a 2.10-mile run. After Keflezighi crossed the finish line, he sat down with KSAT reporter Avery Everett to talk about what it takes to finish a race like this.

The San Antonio Marathon will succeed the Rock 'n' Roll Marathon, which will not return after its December run. While loved by many runners, it took much of its profit out of town for the past 16 years.

Rock ‘n' Roll organizers sent an email to past participants announcing that it was “deeply saddened” it wouldn't be returning after 16 years.

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