White Rock Running Co-op members James Ayers, Brent Yost, Nicole Studer, Eric Studer and Brent Woodle

White Rock Running Co-op members James Ayers, Brent Yost, Nicole Studer — and her hubby Eric Studer — and Brent Woodle are exhausted but ecstatic after a long day at the Rocky Raccoon 100-mile race.

Ultra-running is a fringe activity that is gaining popularity, and women from the Dallas and White Rock area are proving to be leaders in the sport.

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An ultra-marathon refers to anything longer than the 26.2 miles that is a regular marathon — 50k, 50 miles, 100 miles and beyond — and they typically are run on dirt trails (and frequently over mountains and other grueling terrain).

We wrote a year ago about White Rock-area resident and White Rock Running Co-op member Nicole Studer when she won the Huntsville Rocky Raccoon 100-mile race.

This year’s Rocky Raccoon 100, held this past weekend, served as the USA Track and Field 100-mile Trail Championship, and Studer defended her title against an even tougher field of women than last year. She won again; she ran under 16 hours and beat second-place Kaci Lickteig from Nebraska by just three minutes.

Another neighborhood woman, Shaheen Sattar — who also improved last year’s time by more than an hour — placed third.

Dallas Running Club member and neighborhood resident Bryan Fisher snapped this pic of Claudia Zulejkic, who he supported as she tackled the 100-mile race.

Dallas Running Club member and neighborhood resident Bryan Fisher snapped Claudia Zulejkic, who he supported as she tackled the 100-mile race.

Claudia Zulejkic, who you’ll find most days working at Bikram Yoga Dallas on Mockingbird-Abrams, ran all day and night, completing the 100-mile ultra-marathon in a little more than 25 hours and placed in the top 25 women out of more than 100 who started the race.

The finishers all benefitted from the help of pacers and crew, they say, and therefore several members of the neighborhood-based Dallas Running Club and White Rock Running Co-op participated in that capacity.

Studer, an attorney by day, tells us her toenails are a little messed up, but other than that she’s feeling good.