I'm doing my 3rd 200k on June 21st, 6am in case anyone cares to tag along (particularly fellow RUSA members). I would expect a pace around 18 mph, average likely 16 mph. Nice casual ride. I would expect around 10 hours with breaks/control stops/lunch.
Withlacoochee Rails to Trails (WR2T) 217k - Route #1901
"This RUSA permanent is a 135-mile out-and-back ride from Zephyrhills to Dunnellon, about two-thirds of which are on the non-motorized Withlacoochee State Trail, the longest paved rail trail in Florida (46 miles one way). It's actually in Central Florida, but it's my route nonetheless. The trail itself is mostly flat, but the ride begins and ends with a number of hills. This route may be ridden at any time of the year. No fee is required. Download and read the files below the map for more information."
Unfortunately the route is fixed, so start/finish is Zephyrhills for RUSA members. I had hoped to get it reversed but the only way would be if I created an alternate route and became the route owner (considering).
Dunnellon is the half-way point, so I would expect to be there around 10:45-11am. My last trip, I got there in exactly 5 hours from start.