Using Killybegs as a base a trip out to Sliabh Liag, Europe's highest sea clifts is a must. Drive west from Killybegs to Carrick, turn left in the village of Carrick and follow signs to Bun Glass. There is a coffee shop with art gallery on the route which signals the ascent up the mountain. Believe it or not there is a car park further on up. Be prepared as you drive up for that scarey moment as your car bonnet blocks your view of the road and all you see is the sea. Afterwards a further journey into Glencolmcille is worth while. For more information on the area visit www.killybegs.ie
As you take the road west away from Killybegs, you should see small signs near small roads that lead down to the beach. I suggest taking one down and seeing who's there. There are quite a few, and your chances are good that you could come across a beach with only you on it. I found a great little one where the breeze was pleasant for kicking back the car seat and taking a snoozer.