A few miles outside of Lake City you turn onto Colorado Road 24, and this portion is a little bumpy but doable in any SUV, maybe a sedan.
Matterhorn Creek Trailhead is a half mile beyond this lower parking lot on Colorado Road 24 and reachable by a SUV, and you might want 4WD to reach this lot. From this lot you can continue up Matterhorn Creek Road (a real 4WD road) that ascends another half mile to the
Wetterhorn Peak 4WD trailhead. It’s doable but you’ll definitely want 4WD and high clearance to access this lot.