One day, three races and a whole lot of dirt give locals a range of athletic options.

"It's just fun," said Robert Espinoza, owner of Fleet Feet Sports and adviser for one of those races.

DIRTY UP RUN

Make like an aircraft this weekend: Take off for full speed ahead on Hunter Army Airfield's airstrip for the "Dirty Up" Flight Line 5K/10K Run.

And despite the "Dirty Up" name, runners should stay fairly clean.

"Dirty Up" happens as an aircraft lands and kicks up a dust cloud.

"It's a perfect fit to describe a race that takes place on an airfield," said Steve Hart, spokesman for Hunter's public affairs office.

Athletes - or those planning a leisurely stroll - take the path for 5K or 10K timed races at 8 a.m. June 21.

Costs differ for military members and civilians (they pay $25 and $30, respectively, online through June 19) but increase to $45 for all on race day. Then, only cash or checks are accepted.

Organizers wanted to bring civilians together with the military "to run alongside our soldiers and families," Hart said.

Two live bands, the 3rd Infantry Division rock band and classic rock unit Bad Justice, will play at the event, plus food vendors and a beer garden offer refreshments.

Also, 170 aircraft will be in view, as well as multiple airliners positioned along the runway, including Chinook and Black Hawk helicopters and an unmanned surveillance aircraft.

The airstrip itself is another race perk.

"Our runway is the longest runway east of the Mississippi River," Hart said of the roughly 2-mile takeoff strip.

"It's just a good opportunity for us to showcase what our installation has," said Kristy Adams, fitness center director at Hunter. "It's pretty impressive once you actually stand out there.''

JCB MUD RUN

Mud: It's just what the hot, former June run at JCB needed.

The company has tractors, after all, be it for moving earth for construction or mud runs.

"It was the perfect fit," said Robert Espinoza, JCB Mud Run adviser.

In its third year, the Pooler race again looks to host 1,000-plus mud lovers.

It starts at 8 a.m. June 21 at JCB in Pooler.

Costs for two-person teams are $120 for civilians and $100 for military online until June 18. Afterward, racers register at Fleet Feet Sports, 3405 Waters Ave., between 10 a.m. and 6 p.m. June 20, or starting at 6 a.m. race day at JCB.

The roughly 5.5-mile trek features more than 20 obstacles, including a 20-foot feet-first water plunge "and all kinds of mud holes," Espinoza said.

But he's mum on a surprise of "mud plus something else" for participants.

The timed race is suitable for those keen on competition, too.

But racers need not be very active or even swimmers.

"You just pull yourself across" the lake in front of the JCB facility, according to Espinoza, or racers can go around the water.

First- and second-place winners in 13 categories receive awards.

The post-race party offers showers, food, beer and non-alcoholic drinks, plus live music from local reggae band Domino Effect.

Non-racers may attend the party with $10 cash or check for The Lady Bamford Center for Early Childhood Development.

The center, which receives race proceeds, serves 79 children with more than 100 on its waiting list.

They give priority to children with troubles such as homelessness, low income or physical, mental or emotional difficulties.

DIG THE RIDE

Yes, our Lowcountry land is pretty much level.

But don't dismiss mountain biking altogether.

No mere street bikes will do for the first JCB Dig the Ride race at 11 a.m. June 21 at JCB.

The race costs $50 online until June 19, or racers can pay $60 race day at JCB.

"You will not make it around the course on a beach cruiser or a road bike," said Meg Albertson, dealer marketing manager for JCB North America.

Categories ranging from 5-15 miles for youth, novice, intermediate and advanced determine the number of laps around the 5-mile course.

The path includes climbs, drops, bridges, berms and light obstacles.

Even seasoned all-terrain riders can expect challenging abbreviated climbs, according to Albertson.

People who ride the single track courses at Tom Triplett Community Park will definitely want to do this race, she said.

The path has some muddy patches, but racers shouldn't get as dirty as JCB Mud Run racers.

Mud Run racers may participate for free in Dig the Ride, which also benefits The Lady Bamford Center for Early Childhood Development.

Just like it made sense for the company that moves dirt for a living to host a mud run, it seemed logical to add the off-road bike race, according to Albertson.

"We are always looking for bigger, better, more fun and interesting ways to get involved with and engage our surrounding communities," Albertson said.