The ROAR route was beautiful. It starts at Oregon Ridge park in northern Baltimore County and went through rural roads with rolling hills and not much traffic (helped that it was early morning!). I did the 25 mile route and there was only one bad hill that a LOT of people walked up, but it was just a very short stretch. The rest was easily manageable. There was some traffic on the first few miles of the route (along Shawan/Tufton roads, if you're familiar with the area) but next to nothing for the rest of it.

I think they vary the routes from year to year, but it always stays roughly in the same area, so it's always going to be rolling hills with occasional short steep climbs out of valleys.

Sarah