The person at the center of this case
David L. Guinn
Missing Person · Open
324 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 David's driver's license, keys, and personal items left in an otherwise clean vehicle?
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location
Lead #2What is the significance of the Monarch Lake Trailhead location, and did David have plans to hike or visit that area?
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timeline
Lead #3What occurred between October 15 and October 23 that led to the vehicle being abandoned at this remote location?
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 still inside—suggesting an unexpected departure. The circumstances of his disappearance remain unclear, and investigators are seeking information about his whereabouts.
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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 condition of the vehicle (very clean) may indicate premeditation or specific circumstances—was there evidence of foul play or voluntary departure?
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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 Contact
David L. Guinn was last contacted in Colorado Springs, El Paso County, Colorado.
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2025-10-23
Vehicle Located
David's vehicle was found abandoned at Monarch Lake Trailhead in Granby, Colorado. The vehicle was clean and contained his driver's license, truck keys, baseball cap, and gloves.
Key Locations
Interactive map showing important locations related to this case
Case Information
Incident:October 15, 2025
Last Updated:June 11, 2026
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Any information, no matter how small, could be crucial to solving this case.
Phone: 7195207100
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Case Information
Incident:October 15, 2025
Last Updated:June 11, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 7195207100
You can remain anonymous