The Fit Nation "Lucky 7" arrives in Kailua-Kona, Hawaii, on Sunday, May 13, for a week of training. The group will be participating in the Nautica Malibu Triathlon with CNN's Dr. Sanjay Gupta in September. Here they take a group picture before hiking down the Waipio Valley Trail.
Fit Nation in Hawaii —
The Fit Nation "Lucky 7" arrives in Kailua-Kona, Hawaii, on Sunday, May 13, for a week of training. The group will be participating in the Nautica Malibu Triathlon with CNN's Dr. Sanjay Gupta in September. Here they take a group picture before hiking down the Waipio Valley Trail.
Amanda Sloane/CNN
Fit Nation athletic director April Burkey rocks a pink hat while waiting for the "Lucky 7" to get fitted for rental bikes in Hawaii.
Fit Nation in Hawaii —
Fit Nation athletic director April Burkey rocks a pink hat while waiting for the "Lucky 7" to get fitted for rental bikes in Hawaii.
Amanda Sloane/CNN
Glenn Keller Sr., a truck driver and pastor from Burleson, Texas, leads the pack of 2012 Fit Nation Triathlon Challenge participants near Mauna Lani Bay.
Fit Nation in Hawaii —
Glenn Keller Sr., a truck driver and pastor from Burleson, Texas, leads the pack of 2012 Fit Nation Triathlon Challenge participants near Mauna Lani Bay.
Amanda Sloane/CNN
Fit Nation Challenge participants Nancy Klinger, left, and Adrienne LaGier bike through the lava fields on the Big Island of Hawaii.
Fit Nation in Hawaii —
Fit Nation Challenge participants Nancy Klinger, left, and Adrienne LaGier bike through the lava fields on the Big Island of Hawaii.
Amanda Sloane/CNN
Jeff Dauler, an Atlanta radio personality, and other bikers take a training ride through the lava fields.
Fit Nation in Hawaii —
Jeff Dauler, an Atlanta radio personality, and other bikers take a training ride through the lava fields.
Amanda Sloane/CNN
The "Lucky 7" strike a pose after a training ride. From left: Glenn Keller, Rick Morris, Adrienne LaGier, Nancy Klinger, Denise Castelli, Jeff Dauler and Carlos Solis.
Fit Nation in Hawaii —
The "Lucky 7" strike a pose after a training ride. From left: Glenn Keller, Rick Morris, Adrienne LaGier, Nancy Klinger, Denise Castelli, Jeff Dauler and Carlos Solis.
Amanda Sloane/CNN
The team learns about "transition spaces," where athletes place their biking or running gear in certain positions to make it easy to go from swimming to biking or biking to running. Here sneakers are lined up with a triathlete's race number.
Fit Nation in Hawaii —
The team learns about "transition spaces," where athletes place their biking or running gear in certain positions to make it easy to go from swimming to biking or biking to running. Here sneakers are lined up with a triathlete's race number.
Amanda Sloane/CNN
Castelli, an athlete from Netcong, New Jersey, gets ready to run after biking. Castelli's right leg was amputated below the knee following several surgeries to combat an infection.
Fit Nation in Hawaii —
Castelli, an athlete from Netcong, New Jersey, gets ready to run after biking. Castelli's right leg was amputated below the knee following several surgeries to combat an infection.
Amanda Sloane/CNN
Rick Morris, a Web developer and volunteer firefighter from Canton, North Carolina, goes for a run with his teammates.
Fit Nation in Hawaii —
Rick Morris, a Web developer and volunteer firefighter from Canton, North Carolina, goes for a run with his teammates.
Amanda Sloane/CNN
Carlos Solis, an elementary school teacher from Ontario, California, tries to stay hydrated as he runs through the lava fields.
Fit Nation in Hawaii —
Carlos Solis, an elementary school teacher from Ontario, California, tries to stay hydrated as he runs through the lava fields.
Amanda Sloane/CNN
Athletic director Burkey leads the "Lucky 7" team in a stretch after a long run.
Fit Nation in Hawaii —
Athletic director Burkey leads the "Lucky 7" team in a stretch after a long run.
Amanda Sloane/CNN
Klinger, a mother from Afton, Minnesota, shares a laugh with her teammates during a stretch.
Fit Nation in Hawaii —
Klinger, a mother from Afton, Minnesota, shares a laugh with her teammates during a stretch.
Amanda Sloane/CNN
Castelli gets into the downward dog position as the team does yoga after a run.
Fit Nation in Hawaii —
Castelli gets into the downward dog position as the team does yoga after a run.
Amanda Sloane/CNN
Keller joins his teammates in stretching exercises.
Fit Nation in Hawaii —
Keller joins his teammates in stretching exercises.
Amanda Sloane/CNN
Klinger wins the race for getting into a wetsuit the fastest during the team's first swim workout.
Fit Nation in Hawaii —
Klinger wins the race for getting into a wetsuit the fastest during the team's first swim workout.
Amanda Sloane/CNN
Burkey gives swimming instructions to the "Lucky 7" before the team enters the waters in Mauna Lani Bay.
Fit Nation in Hawaii —
Burkey gives swimming instructions to the "Lucky 7" before the team enters the waters in Mauna Lani Bay.
Amanda Sloane/CNN
The Fit Nation team receives more instructions before their first open-water swim.
Fit Nation in Hawaii —
The Fit Nation team receives more instructions before their first open-water swim.
Amanda Sloane/CNN
Roni Selig, Fit Nation coach and director of the CNN Medical Unit, helps Castelli out of the water.
Fit Nation in Hawaii —
Roni Selig, Fit Nation coach and director of the CNN Medical Unit, helps Castelli out of the water.
Amanda Sloane/CNN
Morris attempts to take off his wetsuit while practicing the transition to biking.
Fit Nation in Hawaii —
Morris attempts to take off his wetsuit while practicing the transition to biking.
Amanda Sloane/CNN
Castelli takes in the scenic beauty of the black sand beach in Waipio Valley.
Fit Nation in Hawaii —
Castelli takes in the scenic beauty of the black sand beach in Waipio Valley.
Amanda Sloane/CNN