Let's look where the 2 is. The 2 is in the tenths place. When turning the tenths place into a fraction, it is x/10, being the digit in the tenths place. So, it would be 2/10.
We need to simplify the fraction. Let's divide the top and bottom by 2.
1/5 would be the simpplified fraction. Let's add the whole number.
So, the marathon is 26 1/5 miles.
