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I live in what I would call a hilly area and do most of my runs 'out and back' so for all the inclines I get the same decline. My question is (as in the title) does the decline negate the incline and become the same as running on the flat?
Am currently HADDing so running to HRR rather than pace.
For example, the flattest 10k run from home has a 183 metre incline/decline and today managed to run it in 63:17 @68% HRR. On a flat course at the same HRR would I be faster? or even slower?