Adventure Racing
Adventure racing (at least before the term was co-opted by other sports) involves orienteering in a team (the mixed category is the premier level) while running, mountain biking and paddling around a course. Races can be anywhere from a couple of hours (sprint races) to 14 days (in some cases almost non-stop). Longer races often bring in other disciplines (caving, abseiling, shooting depending on the event, location and race organisers). Here's a video I made from some footage my team mate took in a sprint race we did together not long after I got into it.
