After riding the pump track, he said it's a lot more fun than biking on trails.

"I think it's faster and a lot more challenging … it's a lot more upper body (work)," Griesser said.

He said he plans to visit the pump track often and hopes it will help get more of his friends into mountain biking. Griesser also is looking forward to the mountain bike trails that will be added to the skills course this spring.

"It brings a new section of mountain biking to Maryland because we don't have much downhill riding," he said.

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'Better with time'

The pump track only took a week to build, but that wouldn't have been possible without the help of trail engineers from the International Mountain Biking Association, volunteers said. Hiring the engineers was one of the project's major costs.

Tammy Donahugh, a pro athlete and mountain bike instructor who works on IMBA's trail solutions program, said building the track was challenging because of all the rain last week, but volunteers worked hard to meet the deadline for the grand opening. Though this was her first build, Donahugh has ridden on pump tracks across the country.

Pump tracks are made up of rollers (small hills) and berms (tight turns), she explained, but the way you situate them determines the difficulty of the track. At the Rockburn track, Donahugh said, "they wanted a family friendly beginner/intermediate track that everyone could enjoy together."

Because the track is made of freshly molded dirt, it's still soft. Though it's ridable, Donahugh said, it will harden with time, which will make the track faster.

"These tracks really come to life when they dry out … something like this only gets better with time," Jeff Lenosky agreed.

Lenosky is a representative from Clif Bar, a company that sells organic energy bars. Clif Bar provided a $5,000 grant for the project, and, as a sponsor of IMBA, helped run the grand opening event.

"You see grown ups and kids and everybody having fun," Lenosky, who has worked on four other large pump tracks, said at the event.

He commended IMBA and the MORE volunteers for their work building the track.

"You want to have a creative shape and design of it, so it stays interesting for locals riding it everyday," Lenosky said. "They did a good job of it."