We test-rode MGF yesterday, and it's quite a ride.
Even with the Incline and the run-up to Danby Beacon, it feels like quite a benign run to Lealholm. But re-crossing Eskdale, Great Fryupdale, Little Fryupdale, Farndale, Bransdale, Bilsdale and Ryedale on the way back is quite tough. I might have missed out a valley or two, but the nature of the ride is climbing, descending (there are lots of fine descents), climbing again, and while climbing, looking across the valley to see the track or road you just came down.
Hopefully the weather isn't too warm for you lot next weekend. I'll be sending out the final details for MGF tomorrow, once I've added a couple of updates to the ride info.
https://www.strava.com/activities/1523346667