She covered the 26.2 miles while battling the effects of Amplified Musculoskeletal Pain Syndrome, a disease that is the juvenile equivalent of fibromylagia.
"This past marathon was really hard," she said. "I have never been in that much pain. … My body wasn't accepting the heat. I was going to go to the halfway point and then stop but the Lord was with me and I finished," Wheeler said.
"I also worked to raise money for the [Amplified Muscularskeletal Pain Syndrome] program at CHOP [Children's Hospital of Philadelphia]. We made over 120 cards for people in the program," she said. The fundraiser brought in about $1,000.
CHOP is one of the places Wheeler has sought treatment for the disease.
"I have had the symptoms for a year and a half. At first it was misdiagnosed and I had surgery on my right foot. Then the pain spread to my other foot and then my hands. The pain was really real," she said. "Sometimes it's sharp, like I'm being punched. Other times it's a throb."
The pain can be brought on by stress, illness, or a previous injury. “The big one I have to watch is stress," she said.
There is no cure. Some people recover and become pain free. Others have to live with the illness.
But there are treatments to lessen the effects.
"I've tried a lot of things," she said.
That's led her to CHOP and to the A.I. duPont Children's Hospital in Wilmington.
"I go there several times a week," she said of the Wilmington hospital.
In addition to the physical symptoms, she also deals with the way others understand AMPS.
"It's not a visible illness and the hardest thing is getting people to believe I have it," Wheeler said.
Her twin sister, Brooke, and her younger sister, Alexis, have supported her as she worked to overcome the disease's impact.
The April 22 marathon was in coastal Delaware, through the towns of Lewes, Bethany Beach, and Rehoboth. Her second was in Philadelphia in November, 2016, and the first was in the summer of 2016 in Missoula, Montana.
"I took last year off because of my illness," she said.
She began running marathons several years after becoming a runner.
"I saw a road runner and I thought that looked super. I wanted to do that," she said. "My mom was a runner and she said I should try cross country."
Wheeler joined the junior high team when she was in seventh grade and stayed with the sport.
The Solanco High School junior also runs distance track events and, this year, is the track team's co-captain.
She runs daily.
"When I'm training for a marathon, I do 18 miles," she said.
"If it's in cross country or track season, I do what the coach says."
After graduating from Solanco, she plans to become a physical therapist. "I want to work with kids, special needs kids," Wheeler said.