Summer has arrived in Colorado's high country, and a quartet of high-altitude resorts in Summit County are cranking up for a bustling summer at four of the Rocky Mountain's busiest mountains.

Typically opening mid-June, standard warm-weather attractions include scenic chairlift or gondola rides, coasters and slides, hiking and mountain biking, disc golf, climbing walls, and music, food and drink. Expect that some labor-intensive activities like ziplining may have hours curtailed or, in the case of Breckenridge and Vail, be shut down.

At Arapahoe Basin, Summit County's only via ferreta has half- and full-day guided tours on the "iron way" -- a series of iron rungs fixed in the rock face -- that begin at 12,000 feet of elevation, and top out at the 13,000-foot summit on West Ridge. Near the base, the Aerial Adventure Park runs ziplines, swings, and balancing acts through old-growth forest.

Down the road at Keystone, tubing lives on into the summer, as crews pile up leftover snow atop Dercum Mountain (11,640). Lanes typically stay open into July, 10 a.m to 2 p.m. You must buy a ride up the gondola to the summit, and pre-pay by the run for tubing. Plenty of other activities at mountain-top Adventure Point.

On the other side of Dillon Reservoir, the force of gravity prevails at Breckenridge in the summertime. The Gold Runner Alpine Coaster pitches down 2,500 feet on elevated tracks, with two 360-degree loops and a top speed of 27 mph. The resort also has three alpine slides that run 2,600 feet down concave tracks -- with manual braking.

And to the west, Copper Mountain's summer starts in the base area. Check out bumper boats on West Lake, and a challenging go-kart track. The Woodward Wrecktangle presents a dozen obstacles to overcome in the Woodward Copper extreme sport complex. All-day summer pass includes Wrecktangle, unlimited rides up the chairlift, and limited shots at other activities.

The cheapest activities at any of the resorts are hiking and mountain biking. Check Forest Service regulations for e-bikes. Most have designated trails.

The usual suspects will extend the 2021-2022 ski and snowboard season through May and beyond, as a flurry of late-season storms has reinforced the snowpack throughout the West.

Summer visitors to Colorado ski and snowboard mountains will see plenty of construction going on, as seven resorts across the state string new lifts for the upcoming season.

March is typically the snowiest month in the state of Colorado, and this year, Summit County ski areas are recording over 200 inches combined.

Coronavirus is still a worry, but now ski hill operators must wrestle with too few workers and not enough places to house the ones they’ve hired.

A quartet of Colorado resorts in the Epic Pass system is set to show off improvements as the 2021-2022 ski and snowboard season gains momentum.

Having paused lift construction in the 2020-2021 season, Vail Resorts unleashed its financial wherewithal to make it easier to move around a half-dozen of the 19 of its ski and snowboard mountains in the Rockies and the Sierra.

It takes more than good terrain to be a truly great ski town. When you're walking in ski boots and lugging your equipment around, a town that sits at the base of the ski area or has a great bus system will make all the difference.

At many ski and snowboard resorts, October comes in September -- in the form of the lederhosen, dirndl, clogs, knee socks, and, of course, beer.

When the snow melts and all that’s left of Colorado’s ski resorts are the seemingly endless trails, rushing mountain water, bright green aspen glades and wildflower-covered meadows, what is there to possibly do?

As the weather heats up, Front Range residents and visitors turn their eyes toward the mountains, where they will find cool temps, fresh air, and tons of summer activities awaiting them.

Several Colorado ski areas are taking advantage of recent snowstorms and extending their ski seasons through late spring.

Winter Park has extended their season through Sunday where they currently have 1,325 acres open. 

Breckenridge plans to stay open through Memorial Day weekend - May 31st.

Arapahoe Basin is aiming for a closing date of June 6th this year.

After a warm first week of April, the snowpack took a nosedive across the state. But a cooler and wetter pattern through mid-April halted the early snowmelt for several more weeks and even added to the snowpack slightly.

The vast majority of U.S. ski and snowboard resorts have shuttered operations for the season -- many of them extending past announced closing dates -- but a hearty dozen will spin their lifts deep into the spring.

With Copper Mountain and Snowmass shutting down ski operations for the season on Sunday, four Colorado ski areas remain open, and two of them will be closed in two weeks.

Thanks to a snowy March and persistent pent-up desire to hit the slopes, a slew of Colorado ski and snowboard resorts will keep their lifts spinning beyond original closing dates.

After the majority of the 470 ski areas in the United States closed in mid-March 2020 due to the COVID-19 pandemic, the National Ski Areas Association reported skier visitor numbers dropped 14% compared to the 2018-19 season. It was a blow to the resorts, the towns they call home and a multitude of businesses that serve the industry with everything from gear and accessories to hotels, shuttle companies and more.

Health officials in eight counties have not traced positive tests back to lift lines, chairlifts or ski slopes.

The holiday season is upon us and, despite the headwinds of Covid-19, thousands of skiers and snowboarders have been aiming toward the mountains for welcome relief.

In the spring, during the initial outbreak of COVID-19 in the United States, Colorado’s Summit County — home to the sought-after mountain destination of Breckenridge — enacted one of the strictest stay-at-home lockdowns in the country.

Significant increases in positive coronavirus cases in Colorado -- and resultant stress on hospital capacities -- have forced further restrictions on the number of skiers and riders who can hit the slopes at the same time.