LOS ANGELES — Peter Anno has saved the best for last.

When the Seneca Valley graduate and Los Angeles resident runs in Monday's Boston Marathon, he will have completed his goal of running at least one marathon in all 50 states.

"Plenty of people have run marathons in all 50 states," said Anno, who turned 40 three weeks ago. "Not many have done so by age 40. Most are retired and have the time and resources to get about the country.

"I've had to juggle a lot of things in my life to get to this point. That's what I'm most proud of."

Anno is a chemist for Herbalife, a nutrition and weight management company.

The 50 States Marathon Club consists of 500 runners. There are 300 athletes who have run more than 100 marathons, including 78-year-old Norm Frank of Rochester, N.Y., who has run more than 950.

When Anno finishes the Boston Marathon, he will have run 53 marathons covering more than 1,400 miles.

"He's been into running since he was a kid," said Randy Anno, Peter's father.

As a Seneca Valley junior, Anno ran the Pittsburgh Marathon. He ran the Cleveland Marathon shortly thereafter.

"I have relatives in Virginia, so I went down and ran the Richmond Marathon in 1993," Anno recalled. "That marked my third state and got me thinking about the possibility of running one in all 50 states.

"Most marathons are on weekends, so it hasn't affected my work schedule all that much," he added. "I'm single, so I haven't disrupted any family life by doing this."

When his work schedule is affected, Herbalife has been flexible.

"They promote health and fitness, so Peter is pretty much demonstrating what that company is all about," Randy Anno said.

Peter Anno said he decided to run a marathon in each state to travel and to stay in shape.

He runs three or four days a week, 4 to 5 miles at a time, and competes in a half-marathon twice a month.

Besides hitting every state, Anno has done marathons in Vienna, Austria; Costa Rica and Washington, D.C.

"My sister lives over in Austria and she's been telling me about this marathon they do there every year," Anno said. "I knew I'd get over there at some point."

He says he does three or four marathons in an average year, but he did seven in 2007.

In the past year, Anno ran the Mayor's Marathon in Anchorage, Alaska, last June, did a Rhode Island marathon in October and ran one in Louisiana in February of this year.

"I've been saving Boston for last, given the tradition," Anno said. "Besides, I had to qualify for it."

He qualified for the Boston Marathon last May, when he recorded a time of 2 hours, 57 minutes and 17 seconds in Maine, which was his fasted time since he was 17.

Over the years, Anno has run in snow up Pikes Peak in Colorado and in 95-degree heat in Madison, Wis. He's been among 22,000 runners in Los Angeles and with barely 100 in New Mexico.

He ran in Rhode Island last year in heavy wind and rain.

"That just wasn't very much fun," he said. "In Iowa, we ran in corn fields with no signs and nobody around for miles. I was running alongside some other guy and we weren't even sure we were still on the course.

"The toughest runs are the ones that finish uphill. Wyoming is elevated as much as Colorado and the last three or four miles of that marathon were uphill. That was a killer," Anno added.

The former Butler County resident said the weather for the Florida marathon he ran "was freezing, like 32 degrees in January." The New Mexico and Hawaii events began at 5 a.m. to beat the heat.

Anno doubts the Boston Marathon will be his last.

"I want to run in the original marathon in Greece in October. China has one where you briefly run along the Great Wall — there are still some other things out there," he said.

"He's been running all his life," his father said. "I doubt he'll ever stop."