The annual Iveagh 50 is this Sunday (3rd), there is two routes available on the morning, below is a map and link to each route
The long route www.ridewithgps.com
The short route – www.strava.com
The routes will be Marshalled and there is also motor out riders going in front of the cyclists to make sure the roads are safe.
Early sign on closes today, you can sign up here – www.entrycentral.com