We picked great roads for day 4. We headed north out of Killarney on High St, which becomes Rock Rd / N71, but even though it's a national road it's still a city street at that point and fine for biking. At the traffic circle (1.3 km) take N22 north for ¾ km, then left on L2019. 11.7 km later, jog right on R561 then the first left onto an unnamed (but well paved) road. After 3.8 km turn left (it's the first real left turn, not counting a couple really small roads), and stay on that road for 6 km. In Castlemaine, merge left onto N70 south, then immediately turn right on R561. R561 goes for 26 km, then as it's about to end at N86, turn left instead. That road is quite hilly but deserted and really beautiful. After 4 km it comes down to a rock beach with a castle ruin, and then makes a u turn to head up the next hill. 3.2 km later the roads again all lead to N86, except if you go left on a sort of gravelly mostly-paved road. In 2 km it joins N86 to go over a bridge, then you can go right immediately after the bridge, through a four-way crossroads, and left in 1 km. In about 7 km there's kind of a fork, and we accidentally went left, which took us out to N86 which we then had to take the rest of the way into Dingle, which was suboptimal. The original plan was to stay right at that fork onto Marian Park, which turns into John St after 1 km, which goes directly into downtown.    Co Kerry, Ireland -- 7/10/2014