San Quentin Marathon
E669986
The San Quentin Marathon is an annual 26.2-mile race run entirely inside California’s San Quentin State Prison, where incarcerated runners complete dozens of laps around the prison yard.
All labels observed (2)
| Label | Occurrences |
|---|---|
| 1,000 Mile Club at San Quentin State Prison | 1 |
| San Quentin Marathon canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7512153 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: San Quentin Marathon Context triple: [San Quentin State Prison, hasNotableProgram, San Quentin Marathon]
-
A.
Prefontaine Memorial Run
The Prefontaine Memorial Run is an annual road race in Coos Bay, Oregon, held in honor of legendary American distance runner Steve Prefontaine.
-
B.
Marathon
Marathon is an ancient town in northeastern Attica, Greece, best known as the site of the pivotal Battle of Marathon in 490 BC that inspired the modern long-distance race.
-
C.
Marathon
Marathon is a city in the Florida Keys known for its island chain, boating and fishing culture, and position along the historic route of the Overseas Highway and former Overseas Railroad.
-
D.
Marathon
Marathon is a small town in northwestern Ontario, Canada, known historically for its forestry and mining industries along the north shore of Lake Superior.
-
E.
Marathon
"Marathon" is a 2003 studio album by the legendary Latin rock guitarist Carlos Santana, blending rock, jazz, and Latin influences.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: San Quentin Marathon Target entity description: The San Quentin Marathon is an annual 26.2-mile race run entirely inside California’s San Quentin State Prison, where incarcerated runners complete dozens of laps around the prison yard.
-
A.
Prefontaine Memorial Run
The Prefontaine Memorial Run is an annual road race in Coos Bay, Oregon, held in honor of legendary American distance runner Steve Prefontaine.
-
B.
Marathon
Marathon is an ancient town in northeastern Attica, Greece, best known as the site of the pivotal Battle of Marathon in 490 BC that inspired the modern long-distance race.
-
C.
Marathon
Marathon is a city in the Florida Keys known for its island chain, boating and fishing culture, and position along the historic route of the Overseas Highway and former Overseas Railroad.
-
D.
Marathon
Marathon is a small town in northwestern Ontario, Canada, known historically for its forestry and mining industries along the north shore of Lake Superior.
-
E.
Marathon
"Marathon" is a 2003 studio album by the legendary Latin rock guitarist Carlos Santana, blending rock, jazz, and Latin influences.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
annual sporting event
ⓘ
endurance running event ⓘ foot race ⓘ marathon ⓘ |
| accessRestrictions | held inside a maximum-security prison ⓘ |
| category |
Marathons in the United States
ⓘ
Prison sports ⓘ Sports in Marin County, California ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| courseConstraints | confined to secure prison yard perimeter ⓘ |
| courseType | loop course ⓘ |
| distance |
26.2 miles
ⓘ
42.195 kilometers ⓘ |
| distanceCategory | full marathon ⓘ |
| eligibility | primarily incarcerated men at San Quentin State Prison ⓘ |
| environment | run within prison walls ⓘ |
| frequency | annual ⓘ |
| lapsRequired | dozens of laps around the prison yard ⓘ |
| locatedIn |
California
ⓘ
linked to:
California, United States
Marin County, California ⓘ
linked to:
Marin County
San Quentin, California ⓘ
linked to:
San Quentin State Prison
United States ⓘ
linked to:
United States of America
|
| location | San Quentin State Prison ⓘ |
| mediaCoverage |
covered by documentary filmmakers
ⓘ
covered by running magazines ⓘ |
| notableFeature |
multiple short laps instead of a point-to-point course
ⓘ
organized for incarcerated athletes ⓘ run entirely inside a prison ⓘ |
| organizer |
1,000 Mile Club at San Quentin State Prison
ⓘ
linked to:
San Quentin Marathon
|
| participants |
incarcerated runners
ⓘ
prison staff volunteers ⓘ |
| purpose |
promote fitness among incarcerated people
ⓘ
provide rehabilitation opportunities through sport ⓘ |
| relatedEvent | San Quentin Half Marathon ⓘ |
| relatedOrganization | San Quentin 1,000 Mile Club ⓘ |
| safetyMeasures | run under prison security rules ⓘ |
| spectators | limited to people with prison access ⓘ |
| sport | long-distance running ⓘ |
| startFinish |
San Quentin prison yard
ⓘ
linked to:
San Quentin State Prison
|
| startType | mass start within the yard ⓘ |
| surface |
asphalt
ⓘ
concrete ⓘ |
| timingMethod | lap counting and manual timing inside the yard ⓘ |
| trainingProgram | participants train with the 1,000 Mile Club ⓘ |
| venueType | prison yard ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: San Quentin Marathon Description of subject: The San Quentin Marathon is an annual 26.2-mile race run entirely inside California’s San Quentin State Prison, where incarcerated runners complete dozens of laps around the prison yard.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: San Quentin Marathon