Hi Angela - it looks like the driving part is unnecessary information...all we need to do is look at the swimming and running parts
The question is asking about distance during 2 days
1) Swimming: she swims 2 miles in 1 day, so in 2 days she swims 4 miles
2) Running: she runs 5 miles in 1 day, so in 2 days she runs 10 miles
Therefore, she runs 6 miles farther than she swims after 2 days.