From eastbound I-70: Just after crossing over the border from Colorado to Kansas, take Exit 1 and head south on County Road 3. Stay on CR 3 for approximately 22 miles. You will eventually see a sign for Mt. Sunflower. Turn right (west) at the gate onto a narrow road and continue for a couple of bumpy miles. Turn right (north) at the cattle gate and a short distance to the summit marker.