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Does anyone know of a website that can make sensible estimates of mileage split times, taking account of the undulations on a race course?
Obviously, you can already map out a route, and software will show you the undulation profile... it would not be a big technical leap for this to be translated to split times adjusted to take account of these undulations.
I'm doing my first marathon, and am over-ambitiously planning for 9:09 per mile - but, for example, the last mile is a bit up hill.... so need to have something in the bank!
I will do some split time planning manually - but just wondered if there's an easy way for me to be lazy!