I'm aware of some, but would like to see them reserved for long-abandoned, poorly engineered rail rights of way. When I say "poorly engineered" I mean curving routes that may have been tortuous for freight and passenger trains, but would be more interesting biking/hiking routes.

The Norfolk Southern owned line (formerly Erie Railroad) through Bedford Heights and Solon is a very well engineered rail right of way, and I'm not too wild about losing it to a trail. It was the highest-ranking route among the 11 originally considered by the North East Ohio Commuter Rail Feasibility Study (2001), and would make an excellent, largely freight-free high-speed rail line to Youngstown and Pittsburgh. There are only so many rail rights of way, and even fewer well-engineered ones.

I don't know if the Champion - Geneva trail was a former rail line, since there was no rail line from Geneva or Geneva On The Lake southward. But part of the trail may have been on a former Pennsylvania RR line that went north from Warren, just east of Champion, to the ore docks of Ashtabula. It was one of three rail lines that went from the Youngstown-Warren area to the Ashtabula docks (not including the B&O line that went from Warren to Painesville's ore docks, or the Erie RR line to Cleveland and its ore docks!!). Shows how dominant steel making was in the Mahoning Valley. All but one of those rail lines were ripped out in the 1980s when the steel industry in the Mahoning Valley collapsed.

There are surplus ex-rail lines suitable for conversion to trails, but I think we need to be careful so that we don't lose too many of them. With rail freight traffic booming, the need to diversify our passenger transportation system with more energy/emission-efficient modes, I believe it would be short-sighted to lose these rail rights of way. Too bad the state has no active rail preservation/railbanking program. And once we lose good rail rights of way to trails, it will be difficult to take them back.