Average speed of 60 mph:
Time = Distance / Average speed
Time = 171 miles / 60 mph
Time ≈ 2.85 hours
Average speed of 65 mph:
Time = Distance / Average speed
Time = 171 miles / 65 mph
Time ≈ 2.63 hours
Average speed of 70 mph:
Time = Distance / Average speed
Time = 171 miles / 70 mph
Time ≈ 2.44 hours
Average speed of 75 mph:
Time = Distance / Average speed
Time = 171 miles / 75 mph
Time ≈ 2.28 hours
Average speed of 80 mph:
Time = Distance / Average speed
Time = 171 miles / 80 mph
Time ≈ 2.14 hours
Please note that these driving times are estimates and may vary depending on traffic conditions, road conditions, and other factors. It's always a good idea to add some extra time to your estimated travel time to account for unexpected delays.