Eldorado Canyon is a hidden treasure right in Boulders backyard! Whether its hiking amidst the towering sandstone cliffs, picnicking along scenic South Boulder Creek or climbing Eldo's sheer golden walls, Eldorado Canyon State Park truly has something for everyone! Discover this hidden jewel and take home memories that will last a lifetime. Eldorado Canyon State Park selected as one of Ten State Parks You Can't Miss by SmarterTravel.com Eldorado Canyon offers over five hundred technical rock climbing routes luring climbers from around the world to challenge their skills on Eldos golden cliffs. The beauty of this canyon engages all who visit. Hike or mountain bike our picturesque trails that vary from easy to difficult and connect with Boulder's trail systems. Enjoy a picnic by, or fish in, scenic South Boulder Creek. In the winter, Eldorado Canyon offers cross-country skiing and snowshoeing. The quiet beauty of the park can be experienced best in the cooler months, and during summer weekdays. Please avoid the summer weekend crowds! Eldorado Canyon almost always reaches vehicle capacity on weekends and holidays from May through September, i.e. after filling the Park, vehicles are only admitted when space becomes available.
Just got back. This is the second time on this trail and its still one of my favorites. Be warned, this trail involves a heavy amount of ascent. The trail is almost exclusively switchbacks with a step grade at times. As others have mentioned, if you can hold out till the end there will be fantastic views which make you forget about the trail up. Today the trail had between 4-6 inches of snow covering some ice. I made it without traction devices but snowshoes or micro-spikes would have made it much easier. Take water, take breaks, and enjoy!
The trail is great for all moderate to low key skill levels, and getting to the top is so worth the views. It was really icy yesterday when we went, so yak traks or some kind of anti-slipping device on your shoes and maybe even hiking poles would be a great idea! Lots of dogs, lots of fun!
Mike H. on Rattlesnake Gulch Trail
Great hike, but note that it's really about 5 miles total if starting from the parking lot area. Maybe I didn't read enough of the reviews, but I thought the loop, as well as the out and back to/from the loop would be 3.5 miles total. I still enjoyed it and there definitely are beautiful views. Was 8 bucks to get into the park, and starting at about 3pm on a Friday it was not crowded at all. TIP: Don't put the parking sticker on your windshield... it's one of those annoying paper stickers that leaves a ton of paper and residue on your windshield when you try and take it off.