They ran the Boston Marathon. Then did it again.

Seven runners completed the 'Boston Double', a 52.4-mile ultramarathon where they ran from the Boston Marathon finish line to the start line and then participated in the official marathon. The feat requires intense training and has been done for at least three decades.
Seven runners from the Trail Animals Running Club completed the 'Boston Double', a 52.4-mile ultramarathon. They started at 3 a.m. at the Boston Marathon finish line, ran to the start line in Hopkinton, and then participated in the official marathon. The group, sponsored by Mount to Coast, a Hong Kong-based shoe company, trained intensely for the feat. Justin Hetherington, 41, ran over 500 miles in January alone to prepare. The runners were accompanied by support crew and aid stations along the way. They finished the first leg in 4 hours and 15 minutes, took a couple of hours to recover, and then completed the official marathon.
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