I've been meaning to go for ages, went on Saturday and ran out of time so went back again yesterday and did it both directions. It's surprisingly gnarly in bits but well manageable on drop bars. Some decent climbs and descents. Just get ther early to avoid the dogs/horses.
It was yesterday about 9:30, before it got grim here too. This is Wetherby red kite trail btw. Worth a look if you're this side of Leeds.