It takes around 5 1/2 to seven hours to drive around the island of Puerto Rico. The island is 100 by 39 miles, with a perimeter of 278 miles. The average speed limit is 55 miles per hour as of 2015.
Traveling time depends on how many stops are made, but with no stops, a driver can make it around the island in 5 1/2 hours. Puerto Rico has limited public transportation, so driving is the best option to see the island. Puerto Rico also observes the traffic laws of the United States. Road conditions can vary, and it is common to see unpaved portions off the main highway.