Running at night used to frighten me. Part of it was simply safety, the question of whether level ground would truly appear under each tentative footstep, and whether the temporary but complete blindness suffered while running toward headlights was, in fact, concealing death.

Eventually, competition and adventure wane, and I enter my ibuprofen phase. Tweaky hamstrings and achy knees restrict mileage, but I continue running for health, sanity, and the ritual of a Sunday trail run with like-minded buddies. We discuss the nagging injuries that bedevil us, and remember the good old days when we were kings.

In those long, lonely miles you put in during the off-season, and in those knife-in-the-gut track repetitions and hill repeats that buckle your knees - at that moment in almost every race when you ask yourself how much you're willing to hurt to catch one more runner - you can draw strength and inspiration from your running mates.

Sure, the first light snowfall may be a chance to dance giddily, leaving squeaky footprints through the neighborhood, marking the runner's right to the domain. But later drubbings of snow merely complicate running. Snow turns to ice, to slush, to ice again. Tire ruts twist ankles. New snow hides the hazards.

For most teenage runners, the right foods means a varied diet, decreasing the amount of fat found in the typical American diet and replacing those calories with carbohydrates. Avoid saturated fats, such as those found in fried foods, and eat plenty of fresh fruits and vegetables.