Roads are numbered. A number on a blue background indicates a main road, a "National Road". These roads are often busy with motorized traffic, and thus less attractive for cyclists. A number on a yellow background refers to a secondary road. Often these are excellent roads for bicycle touring. However, you run the risk that the asphalt may suddenly change to dirt.
In 1997, Koreans started a new system of road numbering. The shape of the background changed from oval to square. But maps are not always updated adequately. This is a nuissance when consulting a map, standing at a road sign.
Koreans have dishes and eating habits that differ from western and surrounding countries, such as Japan and China. Rather than discuss them in detail, read Lonely Planet - or other tourist guides of Korea. Be prepared for a few shocking adventures while searching for a good meal, from the viewpoint of a westerner. You might not enjoy live octopus, especially while its suction cups latch onto the insides of your mouth. If you are famished, or you have had enough adventures for that day, go straight to the pizza restaurant or other fast-food establishments. Such places are growing like mushrooms nowadays.
In many small places, however, you won't find anything other than local restaurants. Korean food is very spicy. Start by sampling food from stalls along the road. Otherwise, find a restaurant filled with Koreans. Spy on what they are eating. To order, point to a dish that looks attractive to you.
To order from the menu, most often written in hangeul, on banners hanging from the walls, is gonna fail for sure, even if the waiter tries to help. Too many differences in the Hangeul script compared to your guidebook, in explaining how food is cooked and in eating habits accumulate here and form an insurmountable barrier, all the more frustrating when you’re starving.
For a nutritious pasta meal, ask for "Rah-myon" or "Oo-dong" - in both cases with emphasis on the first syllable. Many common restaurants, not the specialized ones, have this. It is a noodle soup. What I call a "common" restaurant, is one that has normal tables and chairs and a long list of items to order on the wall.
But in the last few years, life has been made a lot easier for tourists who do want to experience Korean food, without being guided by a Korean. A type of restaurant called "gimbap cheon-guk" or "gimbap nara" is very popular among Koreans for a simple and quick meal. In most of those places, there is a picture of the food advertised on the wall, so that choosing because more than an act of Russian roulette.
Another recent development that suits the hungry and thirsty cyclist, is the rapid expansion of the network of modern convenience stores. Chains like 'Family Mart', 'GS25', 'Buy the Way' and many others nowadays have also outlets in the smaller towns. The convenience is that they are not only open for 24 hours per day, but also that they sell snacks and simple meals. There is always hot water (for your instant coffee, tea or ramyeon) and a microwave for your light meal to warm up. Often you also find tables and chairs to make your stop really convenient.