Gardaí in Killarney are urging cyclists and motorists to take extra care ahead of the busy weekend.
Traffic restrictions will be in place throughout the town, while additional parking will be available in the usual overflow carparks such as the Cathedral Field, the Bypass and Park Road.
The 33rd Ring of Kerry Charity cycle takes place tomorrow, starting, and ending, in Killarney.
Sergeant Dermot O’Connell has warned cyclists who begin the Ring early to have adequate lighting and reflective gear.
He says those who do not are risking their own and others’ safety.
Meanwhile, the Munster Senior Football Final takes place on Sunday in the town.
Sergeant O’Connell says there will be considerable parking restrictions outside Fitzgerald Stadium and surrounding areas.
An Garda Siochana warn they will tow any cars blocking emergency access corridors.