The EDGE Ziplines & Adventures (Formerly Castle Rock Adventure Park)

Name: The EDGE Ziplines & Adventures (Formerly Castle Rock Adventure Park)
Telephone: (720) 733-9477
Rating: 4.9

Outdoor Adventures

4.9(1481 reviews)

The take

The former Castle Rock Adventure Park, rebranded in 2024, built on the edge of Philip S. Miller Park. The 10-line zipline tour is the best legitimate outdoor adrenaline activity within 40 minutes of Denver, not the Sky Trek, not the Adventure Tower. The zips.

Why it's here

The Edge sits on the western rim above Castle Rock, which is the actual geography you're paying for: the zips cross a mile and a half of canyon at up to 50 mph, with real exposure and Front Range views on three of the lines. The 10-line tour ($139 for the Zip & Play combo with Sky Trek, higher solo) runs about 2.5 hours with harness time and the ATV shuttle between platforms. It's a guided tour, not a solo send, two guides per group, clipping and unclipping you at every platform, which is why the weight minimum is 70 lbs and the upper end is 250 lbs.

Everything else on the property is secondary. The Epic Sky Trek is a four-story aerial ropes course with 110+ obstacles, fine for kids, underwhelming for adults who've done any real climbing. The Adventure Tower (free-fall, rappel, climbing wall) is a 15-minute novelty. The Ninja Course is glorified playground equipment.

The property rebranded from "Castle Rock Adventure Park" to "The Edge" sometime in 2024, some Google listings and older review sites still show the old name. Weather-dependent: they run in rain, but thunderstorms and high wind shut everything down, and winter operations are reduced. Confirm same-day before driving.

Know before you go

Go for

•The 10-line zipline tour, full length, not the shorter intro options
•Zip & Play combo ($139/person) if you want a half-day
•Summer evening slots (4pm or later) for golden-hour views on the last three lines
•Birthday groups of 6–8, the guides lean into it

Timing

May through October is prime. Morning tours (9–11am) have the calmest wind. Afternoon summer tours get hit by 3pm thunderstorms routinely.

Pro tip

Bring sunglasses with a strap and wear closed-toe shoes that lace. Slip-ons will fly off on line six. The parking lot is shared with Philip S. Miller Park, not reserved, on busy summer Saturdays, park at the Miller Activity Complex and walk over.

Skip / heads up

Don't waste money on the Adventure Tower as a standalone. It's a 15-minute activity padded to feel longer. If someone in your group is under 70 lbs, they can't zip, they'll be stuck doing Sky Trek alone. Confirm weights before booking.

Parking

Shared with Philip S. Miller Park. On busy summer Saturdays, park at the Miller Activity Complex and walk over.

By Mara Holloway