Cyclists looking for a challenge are testing themselves at events like the Dirty Kanza 200, one of a growing number of gravel grinder races on Midwestern country roads. © eddy for Kona COG, 2013. | Permalink | No comment | … <a href="http://cog.konaworld.com/archives/16805">Continue reading <span class="meta-nav">→</span></a>
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