Cycling Ireland, the governing body of cycling in Ireland, have teamed up with AXA to provide some community bike rides throughout the country. Have a look at their website.
https://www.axacommunitybikerides.com/
I will be running one in Waterford, Ireland. If you want to come and join us for a cycle along the beautiful Waterford Greenway, click the link and and sign up. First one happening on the 13th April 2019.