This one is suited to those who have non-running friends (spouses, whatever) they'd like to be out with.
Find yourself some scenic loop. Send friend walking in one direction while you run off in the other direction. When you meet up, do your walk recovery in the same direction as friend. Repeat for duration of workout. I tried this recently, and it worked pretty well. 1-2 minutes recovery (up to 5, depending on size of the loop and nature of interval) as a chance to chat with friend, so they're not alone, and no loss to a workout. I did about 10:2 run/walk last time.
-- Robert Grumbine http://www.radix.net/~bobg/ Science faqs and amateur activities notes and links. Sagredo (Galileo Galilei) "You present these recondite matters with too much evidence and ease; this great facility makes them less appreciated than they would be had they been presented in a more abstruse manner." Two New Sciences
