Discover Soccer
Improve player speed, agility, awareness, confidence, attacking, defending, dribbling, passing, shooting, and more
discoversoccer.info

Elite soccer conditioning
Includes some free articles on soccer strength, speed and conditioning
elitesoccerconditioning.com

Fast-Football
Fitness tips and articles by UEFA B licence coach Colin Harris
fast-football.co.uk

Fitness 4 Football
Resources and articles for becoming stronger, faster and increasing stamina.
fitness4football.com

Soccer Conditioning
Fitness site of the US Men's National Team strength and conditioning coach. Offers some free articles as well as paid services
soccerconditioning.net

Soccer Fitness
Provides information and ideas for youth players to develop specific fitness and to help them play better
soccerfitness.net