The Steam Packet Company is advising people to leave extra time to make it to the boat in Belfast this weekend.
The Belfast Marathon is taking place from 9am on Sunday, May 4 with thousands of people expected to be taking part or spectating.
On its website, the Steam Packet says roads may be busier than usual and there could be diversions in place depending on where people are driving from.
It says you should leave yourself extra time to reach the port.
Weather warning for storm Dave this weekend
Ronaldsway Met office has issued a yellow weather warning for severe gales as storm Dave will hit the Island.
Roads to close for music festival this weekend
Roads in Ramsey will be closed for a day this weekend for a Manx music and dance festival.
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Could you take over this former restaurant?
A former restaurant in the Villa Marina Arcade is up for rent.
Framework of new Sea Services Agreement ready, says minister
The infrastructure minister says the basic framework of the new Sea Services Agreement with the Steam Packet has been agreed.
Attorney General says he's stepping down
The Island's attorney general has announced he'll be retiring later this year.
Road closures in two towns for running event this week
Roads in two towns will close for a running event this week.
Six weekend ferry crossings could face disruption
A series of sailings this weekend could be at risk of cancellation.
