Can't help exactly, but............

J2 Olympics
With You Under A Cold, Bright Sky 1-16: After disaster, hope & renewal of love http://arabia764.livejournal.com/234547.html Gymnastics (Not sure if it's the Olympics or World Championships)

To Stand Close 1-8:Gymnastic coach Jen is given a sex-slave, can he save Jay http://arabia764.livejournal.com/355277.html (World Championship)

17 Days In Feb 1-17:Olympic doc Jen & skier Jay meet at the Canadian Olympics http://17daysinfeb.livejournal.com/2923.html Winter Olympics

An Unlikely Pair 1-5: Jen,figure skater teams with Jay,hockey for the Olympics http://liquid-nitrogen.livejournal.com/15093.html Winter Olympics


SPN Olympics (Swimming & Shooting)
Relative Gold 1-6: Wee-Sam was kidnapped but the boys meet at the Olympics http://ddayspring.livejournal.com/28198.html

Gold Medal Performance by teand: http://teand.livejournal.com/219261.html

Not exactly what you asked for; this is Paralympics, rather than Olympics, but it's an adorable story:

http://zuben-fic.livejournal.com/18978.html
Jensen is a blind skier, Jared is his guide

http://www.fanfiction.net/s/57599AU by Dayspring on FanFiction. 89,000 words, I never wanted it to end.

Dean's life goes in a whole other direction when Sam supposedly dies at age four. But while on the Shooting Team in the 2004 Olympics, Dean meets a tall, shaggy-haired swimmer. Can the yellow-eyed demon be far behind?54/1/Relative_Gold by Dayspring on Fanfiction is one of my favorites.