run, forest, run!
A couple of months ago a pal of mine, a half-decent middle-distance runner decided that, for his birthday treat, he would finally run a marathon. Wanting to avoid the palaver of buying an entry place, early-morning start and getting to the venue, ignoring the roaringly supportive crowds, trouble at the drink stations and having to get his completion medal framed, he simply set his garage-sited running machine to 26.2 miles, opened the door, put the fan on and ran the allotted distance.