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04/24/12 7:59 PM ET

Samson set to run 52.4 miles for charity

NEW YORK -- Accomplished runner and Marlins president David Samson is no stranger to marathons.

The 44-year-old has completed 10 of them. Samson also has finished grueling triathlons, having completed the prestigious Ironman World Championship in Kailua-Kona, Hawaii, in 2006.

For Samson, the challenge he is about to embark on may be his most physically challenging of all. On Friday, Samson plans to run 52.4 miles in one day to raise money for charities, as well as honor the workers who built Marlins Park.

"Every mile I go is another $10,000 at least for charity," Samson said. "That's very motivating.

"What keeps me going is doing something that most people think can't be done. Knowing all the workers are at the ballpark waiting to help give all that money away and all the charities are at the ballpark, waiting to receive all that money. It will keep me going the first 40 miles. I don't know about the last 12."

Samson will start running at 7 a.m. ET in Pompano, and hopes to end at 6:43 p.m. at the ballpark, roughly a half-hour before the Marlins face the D-backs.

In a pregame ceremony, all the workers who spent three years building Marlins Park will be on the field. The aim is to raise more than $600,000 for 10 charities. Each five-mile leg, Samson will be accompanied by a runner for a specific charity.

One of the charities is dedicated to Parkinson's Disease. Samson will be joined during his run by his childhood friend, Bret Parker, who has raised more than $100,000 for the Michael J. Fox Foundation.

"It's really amazing what the Miami Marlins and David are doing," said Parker, who was at the Marlins-Mets game on Tuesday at Citi Field. "First of all, honoring the workers who built that amazing stadium is just great. And the money they're raising for these 10 charities is really important.

"For myself, the Michael J. Fox Foundation for Parkinson's research has a personal meaningful for me, having been diagnosed with Parkinson's five years ago and only disclosing this as part of this run."

Samson ran as many as 30 miles three weeks ago. Actually, it was on March 31, the day before the Marlins faced the Yankees in an exhibition game at Marlins Park.

"It went well," Samson said. "I went to work an hour after I finished. The weather Friday is supposed to be hot, which will be difficult."

Feeling better, Infante back in lineup

NEW YORK -- A sore left groin kept Omar Infante out of the Marlins' starting lineup for four games. Rested after two days when the team hasn't played, Infante was back playing second base for Miami on Tuesday night at Citi Field.

"I'm a lot better," Infante said. "I ran and I didn't feel it. That's why I am playing today."

Infante feels he benefited by the team being rained out on Sunday at Washington and having an off-day on Monday.

Manager Ozzie Guillen said if Sunday's game wasn't washed out, Infante likely would have started. Infante pinch-hit on Saturday.

Infante has been one of Miami's hottest hitters, batting .325 with four home runs and six RBIs.

"He said he's fine," Guillen said. "I asked about the weather. He said he was ready to go. That's the reason he is in the lineup. I don't expect any setbacks."

Marlins try to capitalize on extra rest

NEW YORK -- Two days off gave the Marlins time to regroup and get settled into New York.

The breather came after the Marlins were rained out on Sunday at Washington, and there was a scheduled off-day on Monday.

"You don't like it, but sometimes you need those breaks," manager Ozzie Guillen said. "[Tuesday], we got some early hitting."

The Marlins headed into New York having lost two tough games at Washington. Both were well-pitched games that went to the Nationals.

"A lot of people think we aren't playing good," Guillen said. "We are playing good. What we've been missing is one big hit to put us back on track.

"If you watched the way we played in Washington, it was an outstanding game -- very well-pitched from both sides. We didn't have the big hit. But I think the ballclub is playing well."

Joe Frisaro is a reporter for MLB.com. He writes a blog, called The Fish Pond. Follow him on Twitter @JoeFrisaro. This story was not subject to the approval of Major League Baseball or its clubs.