BOSTON — Allen Johnson is trying to overcome a series of injuries to make one more Olympic team at age 37.

Twenty-five-year-old Lolo Jones is aiming for Beijing after rebounding from a disappointing 2004 Olympic trials.

Both will run the 60-meter hurdles over the weekend, races expected to be among the most hotly contested events in this weekend’s U.S. Indoor Track and Field Championships.

It’s the final stop in the 2008 Indoor Visa Championship Series, with national indoor titles and roster spots for the 2008 IAAF World Indoor Track and Field Championships at stake.

Many of the U.S. elite track and field athletes have chosen to forego the indoor championships in this Olympic year. But some hope to use the indoor championships as a springboard for the outdoor season and the Olympic trials this summer.

Johnson, the 1996 Olympic gold medalist at 110 meters, is trying to rebound after injury-plagued seasons in 2006 and ‘07. He finished the 2007 season ranked No. 6 in the world and has ranked in the top 10 in the world 14 straight years.

“I honestly enjoy running,” he said at a press conference Friday. “If I could, I’d run another 20 years.”

He shrugged off reminders that he has a 15-year-old daughter who is not that much younger than some of the women who will race Saturday and Sunday.

“The age thing doesn’t bother me,” he said. “I’m still here.”

Jones, the defending U.S. indoor champion who finished sixth in the final of the 2007 Outdoor World Championships, has seen her career rebound since she failed to qualify for the Olympics in 2004.

She lost her sponsorship and found herself working two minimum-wage jobs for a while just to have money to train.

“It was tough to keep my energy and focus,” she said.

Eventually she regained her sponsorship and has been on a consistent upward curve since graduating from LSU, where she was a three-time national champion.

The Reggie Lewis Center is one of the fastest indoor tracks in the country, which could result in exciting sprints.

In the men’s 60 meters, reigning world indoor champion Leonard Scott, who won the Millrose Games in 6.59 seconds, will be challenged by 2007 World Outdoor Championships relay gold medalist Leroy Dixon and 2008 Reebok Boston Indoor Games winner DaBryan Blanton.

In the men’s 400 meters, 2003 World Outdoor Championships silver medalist Tyree Washington will take on three-time World Outdoor gold medalist Derrick Brew and five-time NCAA Outdoor relay winner Kelly Willie, whose 46.54 at Fayetteville, Ark., on Jan. 26 was the second-fastest time by an American this indoor season.