The 10th Mayo Pink Ribbon Charity Cycle is taking place today (Sat), with about 600 cyclists taking part.
Motorists are advised of some traffic disruption as a result, with the cyclists leaving Castlebar at 10am this morning and travelling down the N5 towards Swinford.
Organisers say the main area of concern, where motorists will need to take extra care, is at the junction of the N58 and the N4 in Ballyvary village.
Motorists travelling from Ballina, Foxford and Straide will experience delays turning on to the N5 between 10.15 and 10.45 am this morning.
Road users also need to exercise caution on the following roads at these times:
Castlebar to Swinford (N5) from 10 -11am.
Bohola to Foxford (R321) from10.30am -12noon
Swinford to Foxford, (N26) from 10.50am – 12noon
Foxford to Pontoon (R318/R310) from 11.30am - 1pm
Foxford to Ballina via Knockmore, (R318/R310) 11.30 -1pm
Ballina to Crossmolina, (N59) 12.30 – 2pm
Crossmolina to Castlebar (R315/R310) 12.45 – 3.45pm