Hownsgill Sprint Challenge

This is one for "Competitive Ian" really, but anyone can feel free to give it a go.

Basically, it's as fast as you can from the Swalwell Visitor Centre at the start of the Derwent Walk, to the Hownsgill Tea Rooms, near the Hownsgill Viaduct past Consett.
That's more or less exactly 12 miles following the Derwent Walk.
This is a sprint for mountain bikes, none of those fancy racers with the slick tyres.
And of course, there's marvellous food to be had at the end, just to spur you on.

So, here's the route.

The route, all 12 miles of it, all uphill.

So, to start you off, here's photo evidence of my time.

That's 1hr 10mins 42s in case you can't see.

So, 1hr 10mins 42s to beat. Shouldn't be too tricky.
If you post your times in the comments, I can always make a leaderboard, but there has to be some photographic evidence.