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|Most extreme trail half marathon Denver has ever seen ... 2 years ago in Trail Running & Ultras||by HalfMarathons|
|Half Marathons Reach a Milestone in 2012 - includes Growth of Trail half marathons 21k's 3 years ago in Trail Running & Ultras||by Nicole Blomgren|
|Trail Running Half Marathons now easier to find 3 years ago in Trail Running & Ultras||by Nicole Blomgren|
|Speaking of Endurance Challenge 7 years ago in Trail Running & Ultras||by Arnuva|
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