Poster for Sevilla 2013 maraton
Marathons, as most know, are big business. And running a marathon in Spain? Oh, come on, how can you miss? Run the Sevilla marathon, then hang out a week and learn about flamenco dancing! Also walking around Sevilla is like a lesson in Spanish history! When I was there, I took an afternoon and found the birthplace and burial site of Miguel de Cervantes, the writer of Don Quixote.
Marathons in the US are growing as are marathons around the world. Find a race in a city you wanted to explore, take the week after the marathon off (Spain is quite reasonable, as are other venues), and have some fun!