The highway enters the Sunflower State from Colorado in Cheyenne County .
The highway shares a 7 - mile ( 11 km ) concurrency through the town of St. Francis with K - 27 , the first north -- south route intersected in Kansas .
The highway enters the Sunflower State from Colorado in Cheyenne County and shares a 7 - mile ( 11 km ) concurrency through the town of St. Francis with K - 27 , the first north -- south route intersected in Kansas .