This weekend thousands of people will take part in a huge bike ride, including a Lake Highlands man who was diagnosed with multiple sclerosis in his 30s.
About four years ago, 39-year-old Jim Casey's life took a drastic turn.
"I noticed I was having some tingling in my hands and I was starting to having trouble running. My left leg wasn't firing. I tripped on a couple of things," he said.
Shortly afterward he was diagnosed with MS, a disease that causes the immune system to attack the brain and spinal column.
He vowed to fight.
"If everyone does a little bit you can accomplish great things," Jim said.
Doctors told him he needed to get in shape, so he bought a bike. Then he heard about Bike MS, a two-day bike ride to raise money for the fight against MS.
Jim will complete his fifth Bike MS event this weekend.
He has a long list of other accomplishments.
Since being diagnosed he has completed two full Ironman competitions and last year he crossed the finish line at the Ironman championships wearing his "I have MS" jersey.
"I wanted to make a point. Yea, I'm fighting this, but everyone once in a while I win," he said.
He got the Ironman tattoo on his left leg.
"My problem is my left leg doesn't work too well so after I did my first Ironman I got it on my left leg to remind it whose boss," he said.
Jim says his journey has been a blessing. He has lost 70 pounds since being diagnosed and he is one of the top fundraisers for the fight against MS in North Texas.
And he is now working with local bike stores, hoping to get all who have MS on a bike.
"In my perfect world I want to see everyone that has MS on the starting line of Bike MS. Being able to ride, even if it's just 5 miles. Getting that physical activity is so important about fighting this disease," he said.
Bike MS kicks off Saturday in Plano and wraps up Sunday at Texas Motor Speedway.