With high school coming to an end, her friends cut loose -- bonfires, movie nights. It all sounded so fun and Long, a seven-time Paralympic gold medalist, had to skip out so she could hit the pool at the crack of dawn.
Few could have guessed it given her bounty of medals, but Long felt she had failed at the 2008 Paralympics in Beijing. She had promised seven gold medals to anyone who would listen, plastering the number all over her bedroom in Middle River. So four golds, one silver and a bronze just didn't cut it.
On top of that, she was stagnating at her swim club in Towson, surrounded by younger, less competitive swimmers and a longtime coach who no longer knew how to push her.
So Long did what many teenagers do when they're ready to come of age: She left home.
Long, who had both lower legs amputated before age 2, moved to the U.S. Olympic Training Center in Colorado Springs, where she could practice with top-level swimmers and coaches sans distraction. Now on the cusp of her third Paralympics, which began Wednesday in London, she says the decision ended her malaise.
"The first week of training there," she says, "I fell in love with swimming all over again."
The results speak for themselves. Long, 20, set four world records in 2011 and was named female disabled swimmer of the year by Swimming World magazine At the same time, she became one of the country's leading faces for the Paralympic movement, securing an endorsement deal with Coca-Cola and winning an award at ESPN's ESPY ceremony.
In London, she'll swim as many as nine events, beginning with Thursday's 400-meter freestyle. Long learned her lesson in 2008 and hasn't publicly shared her goals for the meet. "I'll just say I plan to bring home a lot of hardware," she says.
Long's mother, Beth, says there's little doubt Jessica wants gold in each and every race.
It has always been that way, ever since the Longs flew to Russia to pick up their adopted daughter when she was 13 months old. Long was born without ankles, heels and most of her foot bones. To give her a shot at walking with prosthetics, doctors told the Longs they would have to amputate her legs below the knees.
"We were worried what capabilities she would be left with," says her father, Steve, a supervisor at Baltimore Gas & Electric.
As soon as the toddler was fitted with prosthetics, however, she stood and tried to walk. As she grew older, God forbid one of her five siblings try to beat her out the front door for a family outing.
"She just likes to win," Beth says. "A lot."
"She always wanted to be up to par with the able-bodied kids," adds Steve.
The Longs first put Jessica in the water at her grandmother's backyard pool in Rosedale. She never wanted to get out. She felt a physical freedom that she couldn't replicate on land.
The Longs had never heard of the Paralympics when Jessica started to take the sport more seriously at age 10. She didn't always win her races against able-bodied peers, so they had no idea she might be world class until an onlooker mentioned that her times might make her a Paralympic contender.
Neither she nor her parents could quite believe it when two years later, at age 12, she won three gold medals at the Athens Paralympics.