Route 66 is a Stagecoach Gold service operated by Stagecoach West.
Route 66 was upgraded to Stagecoach Gold status in January 2012 with 7 brand new Scania N230UD/Enviro 400 double deck vehicles to operate the service.
When the route received Stagecoach Gold status, route 66 was heavily subsidised by Oxfordshire County Council and operated up to every 30 minutes Monday to Saturday with a service every 60 minutes on a Sunday however, due to a rise in passenger numbers since the launch, the frequency of the service was increased in 2014. Due to the increase in frequency, additional vehicles were added to the fleet and subsequently the service no longer needs a council subsidy to run.
The service starts at Swindon Bus Station before making its way to Shrivenham and Faringdon via the A420 road. After serving Faringdon, the service continues along the A420 whereby the service also calls at Southmoor before reaching Oxford. Once in Oxford, the service travels down Botley Road leading up to Oxford railway Station and its terminus at Gloucester Green Bus Station.
Daytime journeys take roughly 80 minutes from start to end with weekday peak time journeys adding an average of 5 minutes to the total journey time.
- This is the only Stagecoach Gold route to operate in Oxford that isn't ran by Stagecoach in Oxfordshire.
- Despite being ran by Stagecoach West, most areas served by route 66 are in Oxfordshire.