Dipsea Race
E700101
The Dipsea Race is a historic and challenging annual trail running event in Marin County, California, renowned as the oldest trail race in the United States.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Dipsea Race canonical | 3 |
| Dipsea Race Committee | 1 |
| the Dipsea Race | 1 |
| the annual Dipsea Race | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7855229 — 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: Dipsea Race Context triple: [Mill Valley, California, hasEvent, Dipsea Race]
-
A.
Mount Wilson Trail Race
The Mount Wilson Trail Race is a historic and challenging annual mountain running event in Southern California that follows one of the region’s oldest hiking trails up the slopes of Mount Wilson.
-
B.
Jura Fell Race
The Jura Fell Race is a renowned and challenging Scottish hill-running event held annually on the Isle of Jura, featuring a rugged course over the island’s steep and remote mountains.
-
C.
The Great American Race
The Great American Race is a prestigious annual NASCAR Cup Series event held at Daytona International Speedway, widely regarded as the sport’s most important and iconic stock car race.
-
D.
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.
-
E.
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.
- 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: Dipsea Race Target entity description: The Dipsea Race is a historic and challenging annual trail running event in Marin County, California, renowned as the oldest trail race in the United States.
-
A.
Mount Wilson Trail Race
The Mount Wilson Trail Race is a historic and challenging annual mountain running event in Southern California that follows one of the region’s oldest hiking trails up the slopes of Mount Wilson.
-
B.
Jura Fell Race
The Jura Fell Race is a renowned and challenging Scottish hill-running event held annually on the Isle of Jura, featuring a rugged course over the island’s steep and remote mountains.
-
C.
The Great American Race
The Great American Race is a prestigious annual NASCAR Cup Series event held at Daytona International Speedway, widely regarded as the sport’s most important and iconic stock car race.
-
D.
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.
-
E.
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.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
annual sporting event
ⓘ
foot race ⓘ trail running race ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| crosses |
Mount Tamalpais area
ⓘ
linked to:
Mount Tamalpais State Park
|
| distance |
approximately 12 kilometers
ⓘ
approximately 7.4 miles ⓘ |
| endPoint |
Stinson Beach, California
ⓘ
linked to:
Stinson Beach
|
| frequency | annual ⓘ |
| hasCategory |
masters
ⓘ
men ⓘ women ⓘ youth ⓘ |
| hasFeature |
age- and gender-based head starts
ⓘ
handicap start system ⓘ limited field size ⓘ lottery-based entry ⓘ scenic coastal views ⓘ single-track trails ⓘ stair sections ⓘ steep climbs ⓘ technical descents ⓘ |
| hasHeritage | one of the oldest foot races in the western United States ⓘ |
| inception | 1905 ⓘ |
| knownAs | oldest trail race in the United States ⓘ |
| locatedIn |
California
ⓘ
linked to:
California, United States
Marin County, California ⓘ
linked to:
Marin County
Mill Valley, California ⓘ Stinson Beach, California ⓘ
linked to:
Stinson Beach
|
| notableFor |
challenging course
ⓘ
competitive handicap format ⓘ historic status ⓘ |
| organizer |
Dipsea Race Committee
ⓘ
linked to:
Dipsea Race
|
| region | San Francisco Bay Area ⓘ |
| sport |
long-distance running
ⓘ
trail running ⓘ |
| startMonth | June ⓘ |
| startPoint | Mill Valley, California ⓘ |
| surface |
dirt trails
ⓘ
paved road sections ⓘ stairs ⓘ |
| terrain | trail ⓘ |
| timeZone | Pacific Time Zone ⓘ |
| website | https://www.dipsea.org/ ⓘ |
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: Dipsea Race Description of subject: The Dipsea Race is a historic and challenging annual trail running event in Marin County, California, renowned as the oldest trail race in the United States.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Dipsea Race
linked to: Dipsea Race
linked to: Dipsea Race