Through Saturday. The Boulder County Fair finishes up its run this weekend with two days of down-home country fun. Most events at the fair are free of charge, including kids’ storytelling, a stick-horse parade, a vintage farm equipment show and live music. There’s also plenty of livestock showing and judging as well – this is a county fair, after all. Saturday starts early with a pancake breakfast presented by the Optimist Club, followed by the final day of festivities: a chili-and-salsa-cookoff, kids’ talent show and the fair’s 150th-birthday party. A carnival midway will be spinning and swirling, too, for thrill-seeking fairgoers. 10 a.m. to 10 p.m. tonight, 6 a.m. to 10 p.m. Saturday. Boulder County Fairgrounds, 9595 Nelson Road, Longmont; 720-864-6460. Admission is free. Carnival rides are an additional fee. Bull riding, demolition derby and kids’ rodeo require tickets; prices are $5-$15. bouldercountyfair.org

Saturday. Spend a Saturday evening with the Highlands Ranch Concert Band when they present “Playin’ in the Park,” their annual free children’s concert. Youngsters will be able to participate in the lighthearted show, helping to conduct songs and dancing in front of the stage. Afterward, they can snag a free popsicle and check out the instruments up close. The program includes lots of pop-culture favorites, like Henry Mancini’s theme from “The Pink Panther,” music from “Pirates of the Caribbean” and a medley of tunes from Pixar films. 6:30 p.m. Saturday. Civic Green Park, 9370 Ridgeline Blvd., Highlands Ranch. Admission is free. hrconcertband.org

Sunday. Join the fight against cancer at Step Up for Cancer at Dick’s Sporting Good Park. Participants go up and down the stairs of the stadium, with some hardy souls competing against each other. Climbers can choose their own pace and how many rows they want to climb, or opt for a flat, stairless course. Before and after the climb, participants and spectators are invited to get a massage, join in a yoga class and visit informational and vendor booths. If they’re not wiped out from the stair-climb, kids can have some fun of their own in a special Kids Zone. 7-11 a.m. Sunday. Dick’s Sporting Goods Park, 6000 Victory Way, Commerce City. Registration is $30 for adults; $20 for kids age 17 and younger and seniors age 60 and older, or for a stairless course. Register at stepupforcancer.org.

Saturday. The big, purple dinosaur returns: “Barney Live in Concert – Birthday Bash!” turns the Pepsi Center into preschool party time in two Saturday performances. The live stage show features Barney and his dinosaur pals Baby Bop, BJ and Riff, plus lots of sing-along songs from the PBS series. Tunes like “Mr. Knickerbocker” and “Dino Dance” mix in with traditional children’s favorites like “The Itsy Bitsy Spider” and “If You’re Happy and You Know It,” complete with dancing dinos and a toddler-friendly storyline. 1 p.m. and 4:30 p.m. Saturday. Pepsi Center, 1000 Chopper Circle; 303-405-1100. Tickets are $18-$65, plus fees. Buy seats at tickethorse.com or call 866-461-6556. barneylivetour.com

Sunday. Parker will be all abuzz during the town’s fourth annual Honey Fest. Learn about Parker’s Thunder Bee project, established to help bolster diminishing honeybee populations through education and 8 Town of Parker beehives. Sample honey products, find out what plants are honeybee-friendly and rock out to live music. The High Land Beekeeping Club will have hives on-site to demonstrate beekeeping and show how bees make their honey. 11 a.m. to 2 p.m. Sunday. O’Brien Park, 10795 Victorian Drive, Parker. Admission is free. parkeronline.org.

Kathleen St. John, Photo: Daily Camera