Hi Alison,
The Mizen Head to Malin Head cycle route is a very popular cycle route for
cyclists in the Republic of Ireland.
National roads, N roads, are our 100km speed single or dual carriageway roads that are well maintained and usually have a hard shoulder lane if you feel like getting off the main part of the road.
The regional, R roads are single carriageway, no pavement 80km roads and make up the majority of the roads you will come across as you travel around. They are also well maintained and perfect for cycling along.
One of our approved tour operators,
IrelandWays, has a self-guided tour option wish may be a useful place to help with your planning.
There is also a community post on
Walking, Hiking, Cycling tours that you may also wish to take a look at.
Also,
Irish Trails have a wonderful website that allows you to look up on-road cycle trails that you may be interested in during your off the main route visits.
I hope this gives you lots of inspiration, and I'm sure your fellow members and some industry partners will be able to add to this list!
If you need any more help, just let me know!
Martin