Seasonality – Cinnamon Pass is very dangerous in snowy conditions and is usually closed to vehicles from October until late May. Vehicle Restrictions – Access to Cinnamon Pass requires a 4WD high clearance vehicle. It is rated as a moderate offroad trail and may not be best for beginners. see video here —> https://youtu.be/4dr2-adCcdI
Info on the road conditions Cinnamon Pass – ADVON
https://www.alltrails.com/trail/us/colorado/cinnamon-pass-road