Quick Info
Size: 310 acres. Highlights: Challenge Hill (200 steps), zipline, trails. Admission: Free for trails and stairs; fees for some activities. Hours: Dawn to dusk daily.
Philip S. Miller Park is Castle Rock's flagship recreation destination. The 310-acre park features the famous Challenge Hill staircase—200 steps straight up the hillside—plus miles of trails, a zipline, adventure playground, and amphitheater. It's become a fitness destination drawing visitors from across the Denver metro.
Challenge Hill
The signature attraction is the 200-step staircase:
- Climbs roughly 200 feet of elevation
- Similar concept to the Manitou Incline, but more accessible
- Wide wooden steps with handrails
- Multiple viewing platforms for rest
- Trail options to descend without going back down stairs
The stairs attract everyone from casual visitors doing them once to fitness enthusiasts doing multiple laps. Weekend mornings are busiest.
Zipline
A zipline course offers aerial adventure:
- Multiple ziplines of varying lengths
- Fee-based activity (reservations recommended)
- Weight and age restrictions apply
- Operates seasonally, weather permitting
Trails
The park features extensive trail options:
Ridgeline Trail: Follows the top of the ridge with views in all directions. Connects to Challenge Hill.
Loop trails: Various lengths for hiking and running. Mostly natural surface.
Connections: Links to the broader Castle Rock trail system for longer outings.
Other Facilities
- Adventure Playground: Large play structure for kids
- Amphitheater: Outdoor venue for concerts and events
- Fieldhouse: Indoor recreation facility
- Picnic areas: Tables and shelters available
- Restrooms: Clean facilities at the main parking area
Tips
Arrive early on weekends. The parking lot fills up, especially on nice mornings. By 9am on Saturdays, expect competition for spots.
Bring water. The stairs are a workout. No water fountains on the hill itself.
Start with the stairs. Do Challenge Hill first while fresh, then explore trails or let kids play.
Check event schedules. The amphitheater hosts concerts that can affect parking and access.
Frequently Asked Questions
How hard is Challenge Hill?
Challenging but doable for most reasonably fit people. Take your time, use the rest platforms. Serious athletes do multiple laps; casual visitors do it once and feel accomplished.
Is there a fee?
The park, trails, and Challenge Hill are free. The zipline and some organized activities have fees.
Is it good for kids?
Yes. The adventure playground is excellent, and kids enjoy the stairs (often more than parents). Good for active families.
How does it compare to the Manitou Incline?
Challenge Hill is shorter, less steep, and more accessible. The Incline is a serious mountain challenge; this is a tough urban workout. Both are worthwhile.