1/100,000 is detailed enough for road bike route planning with rough elevation profiling, it is not detailed enough for offtrail hiking unless coupled with GPS IMHO. The topo maps have roads, but are not updated like road maps are so often they can be out of date. I have National Geographic 'Topo State Series' products and Maptech 'Terrain Navigator', wish I had the Delorme too! National Geographic has the best quality topo maps, they are direct scans from the USGS maps, Maptech and Delorme have better 'software manipulation' capabilities, specifically 3D.