k-141 begins at a southern terminus with k-4 west of the town marquette. from there, the highway heads north for about before turning north-northwest. after the turn, k-141 travels along the top of kanopolis dam. immediately after crossing the dam, the highway turns northwest, travels a short distance, then gently curves back to a northerly direction. k-141 continues traveling in a northward direction until it is south of k-140, at which time it turns northeast, crosses railroad tracks, then turns back north to its northern terminus with k-140 northeast of the unincorporated community of carneiro.