In timeout magazine American Long distance runner Ryan Hall was asked on how he approaches hills
What’s your strategy for those Boston hills–and downhills?
My strategy for the hills in Boston are to run the same effort level whether I am going up, down or flat, which means I will obviously slow down going up the hills and fly down the back of them. I think that energy management is one of the keys to running a good marathon. The better I can keep it locked in at the right effort level, despite the terrain, the better I will run.