This article is from the Triathlon FAQ, by with numerous contributions by James Goddard others.
rec.sport.triathlon was created August 6, 1991 by Tim Rigg because:
"The only related groups are rec.running and rec.bicycles. There is no
group to discuss swimming and there is no group to discuss the
interactions between the three events."
It is a newsgroup devoted to all things triathlon. Anything even
remotely having to do with the sport is considered a valid topic of
discussion. Threads about events, equipment, tactics, tournaments and
personalities are all welcome. Postings for the sale of triathlon
gear and advertisements for related commercial ventures are also
acceptable if some general guidelines are followed (See Section 3.5).