9 News, Sports Denver Colfax Marathon races are close to selling out Wednesday, April 10, 2024 NBC 9 News Six weeks from the Colfax Marathon race weekend, several races are filling up. Registration prices increase on Thursday.Link to original article Tags: newsEventsHealthSportslifelocalhomecolorado-guideproducers-picksmoneysmall-businessbusinessinstagramstylefeaturessyndicationlocal-sportsentertainment