Fast 49 miler

This is a speedy road bike ride, Aprox 16 -18mph on the flat and about 14 mile average over the distance. The ride leaves The Green Cafe in Caerleon at 9-30am heads out to Usk along the Bulmore Road and then on to Abergavenny where we will stop for a comfort break. 2 miles later we're at the base of the tumble for 6k of 10% climbing. After the Tumble we head back to Llanbadoc via Llandegfedd Reservoir and then return to Caerleon along the Usk Road. As well as the mighty Tumble there a few good hills especially round the reservoir to test yer mettle! Here's the link to the route https://ridewithgps.com/routes/10175993 This ride has a specific audience 1) Are you confident to cycle this distance, have you done it recently? 2) Are you confident with the speed and can you maintain it for 4 hours? 3) Do you own a road bike? If its Yes to the above then Please bring lights, brights, and an inner tube and I'll see you on the start line :-)