The person at the center of this case
David L. Guinn
Missing Person · Open
1 year waiting · since 2025
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 was the abandoned vehicle unusually clean, and what does this suggest about the circumstances of David's disappearance?
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location
Lead #2What is the significance of the Monarch Lake Trailhead location—was David known to hike or frequent this area?
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timeline
Lead #3What occurred during the eight-day gap between October 15 and October 23 when the vehicle was discovered?
David L. Guinn, a 64-year-old male, was last contacted on October 15, 2025, in Colorado Springs. His vehicle was discovered abandoned and unusually clean at the Monarch Lake Trailhead in Granby, Colorado on October 23, 2025, with his driver's license, keys, baseball cap, and gloves left inside—raising questions about the circumstances of his disappearance. The El Paso County Sheriff's Office is actively investigating, and anyone with information about David's whereabouts or activities between October 15 and 23 is urged to come forward.
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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 personal items left in the truck (license, keys, cap, gloves) suggest David may have exited the vehicle intentionally—did he plan to hike or meet someone?
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Even the smallest detail could be the key to solving this case.
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 with David L. Guinn
Last known contact with David L. Guinn in Colorado Springs, El Paso County, Colorado.
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2025-10-23
Vehicle Discovery
David's vehicle was located abandoned at Monarch Lake Trailhead in Granby, Colorado. The vehicle was very clean. His driver's license, truck keys, baseball cap, and gloves were left inside.
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2025-10-18
Investigation Initiated
El Paso County Sheriff's Office opened case MP151782 and began investigating the disappearance.
Key Locations
Interactive map showing important locations related to this case
Case Information
Incident:October 15, 2025
Last Updated:September 26, 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:September 26, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 7195207100
You can remain anonymous