"The very first VR 
  was in spring (May/June) 1989. There it was decided that
  future VR's should be every other year on even years only.
At that time a large number 
  of F3F people were also world class F3B people.
  Therefore the VR was decided to run on years without F3B world
  championships. F3B world championships are always on odd years.
We might add to the list:
  1985 "North Sea Cup", Hanstholm, Denmark
  1987 "BARCS F3F International", Derbyshire, England
  In 1987 a new trophy - The Viking Trophy - was presented. It gave name to
  the next race in 1989, and that name stuck. Well, to be precise, the 1989
  event was named "Viking F3F Slope Race", and only since 1990 has the 
  name
  been simply "Viking Race".
In the beginning it was 
  very much a British/Danish/Norwegian affair.
  Therefore the name was quite obvious. Viking territory has widened quite a
  lot since then, but the Viking spirit hasn't changed. That's the main thing.
Best regards, Preben Norholm
  Godthaabsvej 7, DK-7400 Herning, Denmark
  Tel. +45 4818 0012 Mobile +45 4096 7550
  E-mail: preben.p.eriksen@o..."