Find the best time to arrive at Front-Range trailheads
Choose a trail from the list or dropdown, tell the day, season, weather, and how many parking spaces you need — this calculator estimates a recommended arrival window and the probability the lot is full by each hour (6 AM → 12 PM). Results are estimates for planning only.
Popular Front Range trailheads (click for official info)
Official trail pages and trusted map resources:
- Chautauqua / Flatirons (Boulder)
- Royal Arch (Boulder)
- Mount Sanitas (Boulder)
- Flatirons Vista (Boulder)
- Mount Falcon — Castle Trail (Morrison)
- Trading Post Loop — Red Rocks (Morrison)
- Rattlesnake Gulch / Eldorado Canyon
- St. Mary's Glacier (Idaho Springs)
- Devil's Head Lookout (Pine / Rampart Range)
- Manitou Incline (Manitou Springs)
- Garden of the Gods trails (Colorado Springs)
- Mount Bierstadt (Guanella Pass area)
- North Table Mountain (Golden)
- Flatirons Vista / Doudy Draw
- Castle Trail (Mount Falcon)
Or choose a trail from the dropdown
Trailhead Parking Time Calculator
Recommended Arrival
—
Chance lot is full by 9 AM
—
Peak fill hour
—
Est. visitors (day)
—
If unknown, approximate actual parking spaces visible at the trailhead.
Estimates use a simple demand model for planning only.
Recommended arrival & hourly probabilities
Choose a trail and inputs, then click Estimate Arrival Window.
| Hour | Probability lot full by this hour |
|---|
These are modelled estimates — real occupancy depends on trail access rules, shuttles, seasonal lot gates, and special events. Arrive earlier on weekends and holidays to reduce risk.
Luke’s Picks Editorial
Last updated • Front-Range trail planning & parking tips.