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Jon Challberg Missing Person Case

Last seen in Sacramento, California on Feb 6, 1986

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Victim Details

Mar 6, 2018

Jan 12, 2024

Jon

Challberg

78

38

71 inches

72 inches

190 lbs

200 lbs

White / Caucasian

Male

Feb 6, 1986

Sacramento

California

Sacramento County

95833

32007

Sacramento Police Department

Sacramento

California

Sacramento County

95822

Alexandr Giy

Detective

5770 Freeport Boulevard, California

9168080560

Local

Law Enforcement

86-009398

Feb 7, 1986

Sacramento Police Department

10619

Blond/Strawberry

Blue

Blue

Oct 8, 2026


Area Last Seen:

Case Description

Any updates on this case? Let us know!
Summary based on the NamUs case record (MP42480) and 3 other sources
Jon Jeffrey Challberg, 38, was last seen on February 6, 1986, in Sacramento, California. On that evening, he attempted to swim across the Sacramento River, but he never made it to the other side and has not been heard from since. Despite efforts to locate him, no further information has emerged, leaving his case unresolved for decades.

Challberg was described as a white male, around 5'11" to 6'0" tall. At the time of his disappearance, few details beyond the attempted swim and subsequent disappearance were available. His case remains classified as a missing person, with law enforcement agencies continuing to seek any information that might help solve the mystery of his disappearance.
Last Seen: Feb 6, 1986

Links to Additional Sources (3)

See any mistakes? Let us know!
  • Missing Person / NamUs #MP42480
  • Sacramento law enforcement to host missing persons conference at ...
  • Valencia Scott Vs. Kenneth Challberg Court Records | Trellis.Law

    • Possible Unidentified Matches (10)

    Unidentified remains cases whose details are consistent with this person, ranked by how closely they compare. Fields that are unknown in either case are left out of the score.

    82%Moderate
    John Doe — Sacramento, California
    UP2399 • Found Feb 20, 1986
    View case
    Sex ✓Male
    Age 85%Est. 30–50 vs 38
    Race 100%White
    Location 100%3 mi away, same county
    TimingFound 14 days after last seen
    Height 100%6'1" vs 5'11"–6'0"
    Weight 100%210 lb vs 190–200 lb
    Hair 50%Brown vs Blond
    80%Moderate
    John Doe — Sausalito, California
    UP17718 • Found Sep 9, 1990
    View case
    Sex ✓Male
    Age 100%Est. 35–45 vs 38 when missing
    Race 100%White
    Location 82%74 mi away, same state
    TimingFound 5 years after last seen
    Height 100%5'11" vs 5'11"–6'0"
    Weight 89%160 lb vs 190–200 lb
    Hair 50%Brown vs Blond
    Eyes 70%Gray vs Blue
    79%Possible
    John Doe — Sausalito, California
    UP17743 • Found Feb 17, 1987
    View case
    Sex ✓Male
    Age 100%Est. 33–39 vs 38 when missing
    Race 100%White
    Location 82%74 mi away, same state
    TimingFound 12 months after last seen
    Height 100%5'10" vs 5'11"–6'0"
    Weight 89%160 lb vs 190–200 lb
    Hair 10%Black vs Blond
    78%Possible
    John Doe — Oakland, California
    UP54081 • Found Dec 12, 1986
    View case
    Sex ✓Male
    Age 100%Est. 25–40 vs 38
    Race 100%White
    Location 84%70 mi away, same state
    TimingFound 10 months after last seen
    Height 84%5'9" vs 5'11"–6'0"
    Weight 100%219 lb vs 190–200 lb
    Hair 50%Brown vs Blond
    Eyes 0%Brown vs Blue
    78%Possible
    John Doe — California - unidentified case UP2363
    John Doe — California
    UP2363 • Found Mar 9, 2003
    View case
    Sex ✓Male
    Age 100%Est. 30–45 vs 38 when missing
    Race 100%White
    Location 99%13 mi away, same county
    TimingFound 17 years after last seen
    Height 100%5'11" vs 5'11"–6'0"
    Hair 50%Brown vs Blond
    78%Possible
    John Doe — San Francisco, California
    UP5919 • Found Apr 1, 1987
    View case
    Sex ✓Male
    Age 85%Est. 40–60 vs 38 when missing
    Race 100%White
    Location 82%76 mi away, same state
    TimingFound 14 months after last seen
    Height 100%5'10" vs 5'11"–6'0"
    Weight 100%190 lb vs 190–200 lb
    77%Possible
    John Doe — San Francisco, California
    UP5927 • Found Oct 2, 1989
    View case
    Sex ✓Male
    Age 85%Est. 30–50 vs 38 when missing
    Race 100%White
    Location 82%76 mi away, same state
    TimingFound 4 years after last seen
    Height 100%6'0" vs 5'11"–6'0"
    Weight 100%205 lb vs 190–200 lb
    Hair 50%Brown vs Blond
    77%Possible
    John Doe — San Francisco, California
    UP5923 • Found Oct 17, 1987
    View case
    Sex ✓Male
    Age 85%Est. 30–50 vs 38 when missing
    Race 100%White
    Location 82%76 mi away, same state
    TimingFound 20 months after last seen
    Height 100%5'11" vs 5'11"–6'0"
    Weight 68%140 lb vs 190–200 lb
    Hair 40%Gray vs Blond
    76%Possible
    John Doe — Napa, California
    UP69733 • Found Dec 14, 2007
    View case
    Sex ✓Male
    Age 100%Est. 28–42 vs 38 when missing
    Race 100%White
    Location 90%47 mi away, same state
    TimingFound 22 years after last seen
    Height 100%6'0"–6'3" vs 5'11"–6'0"
    76%Possible
    John Doe — Forestville, California
    UP93104 • Found Dec 31, 1994
    View case
    Sex ✓Male
    Age 100%Est. 35–45 vs 38 when missing
    Race 100%White
    Location 82%75 mi away, same state
    TimingFound 9 years after last seen
    Height 100%5'11"–6'1" vs 5'11"–6'0"

    These comparisons are generated automatically from public NamUs case data and are not confirmed identifications. Only DNA, dental or fingerprint comparison by investigators can confirm an identity. If you believe two cases are connected, contact the agency handling the unidentified case.

    Unidentified photos are blurred because many are post-mortem. Tap a photo to reveal it.

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    Forum Posts (1)

    Jon Jeffrey Challberg, 38, was last seen on February 6, 1986, in Sacramento, California. That... ...Read More
    02/29/2024

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