'The Beast' races to lose 100 pounds

Photos: Rucker races to weight loss finish line
Racing to a weight loss finish line – At his heaviest, Mark Rucker estimates he weighed 385 pounds.
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Photos: Rucker races to weight loss finish line
Racing to a weight loss finish line – Rucker plays mini golf during a fateful trip to Gatlinburg, Tennessee, in 2010. He was unable to join his daughter on any of the rides at Dollywood.
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Photos: Rucker races to weight loss finish line
Racing to a weight loss finish line – Rucker readies for his first 5K race, The Great Buffalo Chase, on July 4, 2011.
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Photos: Rucker races to weight loss finish line
Racing to a weight loss finish line – Rucker runs his first 10K race at a 13-minute mile pace on July 30, 2011. "I've never run cross country and this might have been the wrong time to try to learn," he joked on his blog that night.
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Photos: Rucker races to weight loss finish line
Racing to a weight loss finish line – Rucker shows off the medal he received for completing a half marathon on October 23, 2011.
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Photos: Rucker races to weight loss finish line
Racing to a weight loss finish line – Rucker runs the Myrtle Beach Marathon on February 18 with a time of 6 hours and 13 minutes.
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