How many inches are there in 2.5 miles? There are 5,280 feet in one mile and there are 12 inches in one foot.

To find the number of inches in 2.5 miles, we will first convert miles to feet and then feet to inches.

1 mile = 5,280 feet

So, 2.5 miles = 2.5 * 5,280 feet = 13,200 feet

Since there are 12 inches in one foot, we can multiply the number of feet by 12 to get the number of inches.

13,200 feet = 13,200 * 12 inches = 158,400 inches

Therefore, the answer is option B) 158,400 inches.