Update: The race and festival are canceled due to extreme heat. Rockville Twilight Road Race Canceled Due to Heat Wave The city of Rockville will be celebrating the 34th year of its Twilight Runfest this Saturday, causing roads to close for 13 hours. The Runfest includes a 8-kilometer road race and 1-mile family fun run. … Continue reading Canceled: Road Closures Planned for Saturday’s Twilight Road Race in Rockville