Thank you, Boris. You ask an excellent question. I was, in fact, considering signing up for a marathon during today's run. I don't think I will sign up for a conventional one. I really do train primarily for orienteering. I even think of the running and the skiing races that I've done as training for orienteering races. It's just that I didn't do orienteering until adulthood, which makes me inherently less confident on an orienteering course. To make up for this lack of inherent confidence that could have come from orienteering as a child or a teenager, I derive a ton of confidence on an orienteering course from being physically fit and from following a consistent training schedule (I realize that other people might think that the inherent confidence that's independent of physical fitness can come from either genetic endowment or from lots of navigation training in Swedish woods; I generally do not believe in the former when it comes to making decisions in my own life; the latter is not available to me, since I choose to stay in the U.S., where academic physics research is the best in the world). This brings up the question of what I am going to train for when I move to Santa Barbara in the fall, where there will be a lot less orienteering than there is in the neighborhood of New York City. I think that I very well might start training for mountain marathons there. Those may become the temporary substitute for orienteering races as consistent racing challenge for me. For instance, this half-marathon
that climbs 1200 meters from Santa Barbara into the northward mountain range looks fun. I'm not sure I'm going to register for this year's. However, I'm sure something like this half-marathon will be available in 2017 as well. Also, based on the website of the Los Angeles Orienteering Club, I'd say they look quite active. Hopefully, I will be able to attend their meets as well. An additional consideration in all this is that a good endurance training schedule calls for some quality cross-training. Skiing is perfect for that in the North-east. I have a feeling that in the South-west I'm going to have to learn how to swim. I do not know when the next epic orienteering adventure will come. However, this time I will be ready.