Most red rocks concerts have a 6:30 p. m. Door time, which means in order to fully take in the sun soaked afternoon in the hills, 5:30 p. m. Is probably the latest you would want to. Red rocks is outside. Before the words mittens, snow, and cold cross your mind, know that red rocks is only open in the summer through the fall. You won’t be attending when. Red rocks is the only trail that allows horses and mountain bikes. Wear hiking boots, and carry water and trekking poles. Even though the venue enjoys excellent. Wear a black tee with structured black pants and a leather jacket or a blazer.