A person can run 5 miles in one stretch and wants to run a 26-mile marathon next year.
What is an appropriate long-term goal for this person?
to run 10 miles in one stretch by the end of the first week
to run 15 miles in one stretch by the end of 6 months
to run 20 miles in one stretch by the end of the first month
to run 26 miles in one stretch by the end of the first month
