Suggest an update Name* Categories* State* Locality* ZIP* Street address* Phone* Website* Company description* Visit the hotel Carl's Jr, which is in the state Colorado (CO), city Firestone. Our hotel can be found at 4238 Union St, Firestone, CO 80504-6494. Great deals on best and cheap hotels. Your comments* (not for publishing) * — Required information Carls Jr/4238 Union St - Firestone - Colorado (CO) ← View details 4238 Union St, Firestone, CO 80504-6494, Firestone, Colorado (CO) +1 303-684-9412