Marathon Pace Band Generator

This pace band will generate three lists of split times; an even split and two 'safety margin' splits. The safety margin splits run the race slightly faster in the first half, so you reach the 13.1 mile mark either one or two minutes ahead of even pace. After the half-way point, all three use even pace to the end. I aim to be between the one and two minute safety margins.

http://fellrnr.com/wiki/Marathon_Pace_Band