How long does it take to drive across Iowa?

Driving across Iowa from east to west or vice versa takes approximately 5 to 6 hours without considering stops or potential delays due to weather or traffic conditions. The distance across the state is roughly 300 miles (480 kilometers), and the average speed limit on most highways in Iowa is around 70 miles per hour (110 kilometers per hour). However, there are variations in speed limits, and it's always advisable to adhere to the posted speed limits and drive safely.