OK, I'll speak up as someone who often puts marathon splits on the back side of maps, but I'll always get "key" points on the front-- start, finish, any turnaround points. This could be due to obsessing about showing details on the map via blowups, or about listing enough details for timing points to make the description pretty redundant, or to my medieval clinging to hand drawing and lettering. I mean I see Mark and Gene's point, and I agree that it's better to have it all on one page, but I think something may be lost if we force all those descriptions to be on the same page as the map.