Golden Super Cruise Car Show (first Saturday monthly May-October)
The South Golden Road area around the Sonic drive-in is home to a very large monthly car show called the Golden Super Cruise. They typically hold this event on the first Saturday of every month from May through October. One of the best things to do in Golden on a Saturday evening.
Mountain Fest
Mountain Fest. It’s as fun as it sounds.
Enjoy an afternoon of mountain-centric activities and discover all the exciting benefits of Colorado Mountain Club membership from noon to 4pm Saturday, March 25. This FREE event will be held at the American Mountaineering Center, 710 10th Street in Golden, Colorado. The festivities will kick off at noon featuring your 1st drink free from Upslope Brewing Company and Stem Ciders. Mountain Fest is the perfect way to get motivated and learn new skills and for spring and summer mountain adventures. This year’s event will feature, outdoor skills clinics, tours and a Beacon clinic in the American Mountaineering Museum, gear demos, open climbing , and CMC membership deals.
The highlight of the afternoon will be an expo featuring the CMC’s schools and courses: Wilderness Trekking School (WTS), Basic Mountaineering School (BMS), Fly Fishing School, Advanced Crevasse Rescue, Alpine Scrambling School, Intro to Hiking Safety, and Backpacking School. Volunteers will be on hand to give personal accounts about participating in CMC’s educational activities. Expo booths will also showcase CMC’s programs and initiatives: CMC’s Adventure Travel Program, Conservation, Youth Education Program (YEP), CMC Press, Denver Trails and how to get started Volunteering in the CMC. The membership booth will feature membership deals.
Free presentations and clinics will include: How to Properly Fit and Purchase Footwear by Adidas- Mountain Fest lead sponsor; Compass demo and clinic presented by Brunton- Mountain Fest sponsor; Climbing the 14ers; Rock Self Rescue; Avalanche Education; Wilderness First Aid; Ten Outdoor Essentials and Mountain Safety; Know Before You Go Avalanche Education; and a Highlight of the CMC’s Adventure Travel Trips from all over the world!
For a full schedule, please visit the CMC website at www.cmc.org/mountainfest
Don't miss this opportunity to experience the CMC for yourself or introduce friends and family to all the adventure the Club has to offer.
Copper Country Music Festival (Labor Day Weekend)
Each year over Labor Day Weekend, Copper Mountain Ski Resort hosts the free Copper Country festival, with two full days of country, blues, and folk music from top name performers.
Creek at the Peak Rafting Festival
The Creek at the Peak raft and kayak race takes place on June 23rd, 2012 and provides a great opportunity to watch rafters and kayakers compete for prizes while supporting a great cause. Come check out the race and the after race festival in Idaho Springs on Saturday June 23rd. The festival takes place on the east side of the Springs at the ball fields. The race finishes just west of Idaho Springs and begins in Lawson.
The festival begins at noon and will feature live music, food from local restaurants, and Idaho Springs' famous Tommyknocker beer!
When: Saturday June 23rd, 2012.
The festival begins around noon and continues through the evening.
The races begin at 5pm and will probably finish around 7:30pm.
Where: Idaho Springs at the ball fields on the east side of town.
For all the details, check the Creek at the Peak site: 
Denver Center for the Performing Arts ($10 tickets)
The Denver Center for the Performing Arts offers a limited number of $10 tickets, every Tuesday morning, for shows coming later in the week.
Morrison Nature Center at Star K Ranch, Aurora (always free)
The beautiful Morrison Nature Center is a free park in Aurora, Colorado that is definitely worth checking out when you are in the area.
Evergreen Chamber Orchestra (Saturday February 2)
The Evergreen Chamber Orchestra will have a free performance on Saturday Feb. 2, 2013, 7pm at Evergreen High School. Talented students from area schools will participate with the Evergreen Orchestra in this free concert.
The Evergreen Chamber Orchestra Web Site:
http://www.evergreenchamberorch.org/
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Avery House, Fort Collins (free Saturday and Sunday)
The Poudre Landmarks Foundation has some of the best Fort Collins attractions for history buffs. Their historic Avery House in Fort Collins offers free tours on Saturdays and Sundays from 1pm to 4pm. The tour guides provide a wealth of information about the city's early days, and what life was like in the front range in the late 1800's. This is one of the great historical things to do in Colorado, as Fort Collins has a rich and colorful early history in the settling of Colorado.
When:
Year-round Saturday and Sunday
1pm to 4pm
For 2014, the Poudre Landmarks web site is incomplete and it is unknown whether Avery House tours are still taking place. Hopefully they will release an updated schedule soon. Call them to check on the latest situation: 970-221-0533
Where:
328 West Mountain Avenue
Fort Collins, CO 80524
Avery House Web Site:
Denver Zoo Free Days
The Denver Zoo free days are by far the most popular Denver free days for families with kids, and are typically held during the fall and winter.
Keystone Ski Resort Free Scenic Chair Lift Rides
Keystone Ski Resort offers free summer scenic chair lift rides every Friday from 3-7pm, starting June 14 and continuing until summer activities close at the end of August. The views are incredible so I would definitely recommend taking a Friday to check out Keystone.
Longmont Studio Tour (September 29-30)
Underhill Museum | Idaho Springs | Always Free
The free Underhill Museum is a small but quaint depiction of early life in downtown Idaho Springs, with several rooms set up to display a typical home setting in the early 1900's. The kitchen in particular is very elaborate, and during better weather the Victorian Garden is open to the public. In addition, there is an old vault, antique cash register, and many photos of Idaho Springs through the years.
This free museum earns revenue for the History Society of Idaho Springs with a bookstore located at the entrance. They have an excellent selection of Colorado books as well as a large used book inventory.
This is a nice free historical museum to visit while browsing the shops in downtown Idaho Springs. I'm no fan of tourist trap shops that are full of cheap imported junk, like many of the shops in more popular Colorado tourist destinations. The shops in Idaho Springs are not like that. Many feature locally made artisan works for reasonable prices.
Fall and Winter hours 2011-2012:
Saturday, Sunday, and Monday 11am to 5pm.
Location:
The Underhill Museum is at the western end of the strip in downtown Idaho Springs on Miner Street. Look for the sign that says "Books".
While you're in the area check out the Visitor Center and Heritage Museum at 2060 Miner Street.
Historic Idaho Springs site:
McCormicks Fish House and Bar (Downtown Denver)
I am a sucker for old buildings, and McCormicks Fish House and Bar, located in LoDo in downtown Denver, has everything I'm looking for.
Denver Museum of Nature and Science (free days)
One of the top things to do in Denver with older kids, the Denver Museum of Nature and Science is a hands-on educational museum that kids love!