Hi Mark
The course itself is not affected by the bridge closure at Bubwith and so the event is still going ahead.
The control point for the event is in the nature reserve car park, on the LHS, when travelling on the A163 from North Duffield to Bubwith, it is quite easy to miss. If you get to the bridge then you have gone too far.
Obviously if anyone is planning to come through Bubwith to get to the event start then they'll have to find an alternative route.
Craig