The person at the center of this case
David L. Guinn
Missing Person · Open
234 days waiting
Missing Person: David L. Guinn
Justice for David L. Guinn — the trail went cold in 2025, but the truth hasn't.
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Key leads to think about
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evidence
Lead #1Why were personal items including driver's license and keys left in the abandoned vehicle? What does the condition of the vehicle suggest about the circumstances?
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location
Lead #2What was David's purpose in traveling to Monarch Lake Trailhead, and why was the vehicle left there?
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timeline
Lead #3What occurred during the 8-day gap between last contact on October 15 and vehicle discovery on October 23?
David L. Guinn, a 64-year-old male, was last contacted on October 15, 2025, in Colorado Springs. His vehicle was discovered abandoned on October 23, 2025, at the Monarch Lake Trailhead in Granby, Colorado, with his driver's license, keys, baseball cap, and gloves left inside—suggesting an unexpected departure. The circumstances of his disappearance remain unclear, and investigators are seeking information about his whereabouts and what may have occurred after his last known contact.
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More leads to consider
Beyond the top three above — each detail below could be the thread that pulls this case open.
💡
clue
Lead #4The vehicle was described as very clean—was it cleaned before abandonment, and could this indicate premeditation?
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Official wording
Source Narrative
NamUs case MP151782. Missing person: David L.
Guinn. Last known contact: 2025-10-15 in Colorado Springs, El Paso, CO.
Circumstances: Last contact with David was on 10/15/2025. His vehicle was located abandoned but very clean on 10/23/2025 in Granby Colorado in the Monarch Lake Trailhead.
His drivers license, truck keys, baseball cap, and gloves were left in the truck. Demographics: 64 years, Male, White / Caucasian.
Physical description: 5 ft 9 in, 140 lbs, hair: Brown, eyes: Green. Investigating agency: El Paso County Sheriff's Office | 2025-13044 | 2025-10-18.
Timeline of Events
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2025-10-15
Last Known Contact
David L. Guinn was last contacted in Colorado Springs, El Paso County, Colorado.
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2025-10-23
Vehicle Discovery
David's vehicle was located abandoned but very clean at Monarch Lake Trailhead in Granby, Colorado. His driver's license, truck keys, baseball cap, and gloves were found inside the vehicle.
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2025-10-18
Case Opened
El Paso County Sheriff's Office opened investigation case 2025-13044.
Key Locations
Interactive map showing important locations related to this case
Case Information
Incident:October 15, 2025
Last Updated:June 6, 2026
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Phone: 7195207100
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Case Information
Incident:October 15, 2025
Last Updated:June 6, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 7195207100
You can remain anonymous