Due to road works on the original course, the RTTC National 50, being held on the 25th June has been moved to the T502/3.

Full course description is below. 

Start at de-restriction sign at south end of Crathorne on old A19 (5 yds south of farm entrance) and proceed onto A19 southbound.  Continue on A19 to bear left off A19 signed Knayton ¼ ml, Borrowby 1¼ ml, (12.16mls)  Proceed up slip road to turn left over bridge crossing A19, to crossroads, where left to rejoin A19 northbound.  Continue northwards to  take A67 slip road.  Turn right, with care,  where bear right to junction at west end of bridge.  Turn right, with care, and proceed over bridge to join A19 southbound carraigeway.  Continue south on A19, passing Tontine Hotel, to bear left off A19 signed Knayton ¼ ml, Borrowby 1¼ ml,  Proceed up slip road to turn left over bridge crossing A19, to crossroads, where left to rejoin A19 northbound.  Continue northwards passing the Tontine Hotel to finish at layby approx 150 yds south of White Swan Junction/Trenholm Bar bridge (50mls).