If it's a one off I don't think it matters too much. Two 4's in this context doesn't equal 8. Maybe run lunch slow and after work fast, for the fun of it!
BR, I have always been told that doing the 8 miles is better than two lots of 4 but as Jelly Bean says you might find it fun to do an easy 4 and then a fast 4.
At the end of the day everyone needs variety in their training now and again to keep the interest up and not wallow in the comfort zone.
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mmmmm just I can run at lunch today and after work, but don't have much time after work. So trying to decide if I should run twice or just the once.
At the end of the day everyone needs variety in their training now and again to keep the interest up and not wallow in the comfort zone.
Have fun whatever you decide on.