Eski Foca is a very nice Eagean town which yoyu would love to spend some hours or a overnight stay, then your ride to Yeni Foca will be memorible, which you would not like to end. However, it is only 21 km :).
This is the road between two towns on the Aegean coast: Eski Foca (Old Foca) and Yeni Foca (New Foca). Although this may be considered as a short road, if you have time riding north from Izmir, it will be a one-hour well spent going west to Eski Foca and catching the main road again through Yeni Foca. The road is well paved and it has nice corners. While adoring the magnificent scenery, you must be very careful with some of the sharp corners though. Both towns have beautiful beaches, nice marinas and small restaurants that offer nice Aegean seafood.