The Run Ridge Run 13km and 25km is the newest edition to the Coast Mountain Trail Series. The 25km route essentially follows the Diez Vista 50k course (with just a couple of minor deviations), climbing up and along Diez Vistas Ridge before following Buntzen Lake back to the finish. CMTS races are known to be challenging, but so far I’d only had the chance to run the Cap Crusher and Squamish 50k which both proved to be just that.