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Castro Valley · destination, not courseCastro Valley destination photo, not a view of this race course. Castro Valley Library entrance (2026-09-15 19:01:01). Photo by BriefEdits · CC BY-SA 4.0 · Original image. Resized, display-cropped and gently color-graded.
Mixed surfaces running; the exact distance still needs confirmation.
Partial information
Half is approximately 70% dirt and 30% paved, with rolling hills. Actual Ultra Half mileage/ascent still need confirmation.
Total ascent not verified.
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Time limit needs rechecking
Verification overdue; confirm the current time allowance. Some evidence is overdue; confirm current details.
Personal fit
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Recorded
Mixed surfaces · loop
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A New Year’s Day trail half marathon at Lake Chabot. It is part of the Ultra Half Series.
Approximately 30% paved and 70% dirt.
Exact-distance organizer download linked on current event page. GPX link provenance verified; raw route geometry not inspected.
Pacific time
Currently linked by the explicitly dated 2027 event home. Web extraction of directions is cached seven months ago, while search extraction reports last month. Direct current fetch returned 403; precise live page freshness is not established.
Regular half time limit.
Currently linked by the explicitly dated 2027 event home. Web extraction of directions is cached seven months ago, while search extraction reports last month. Direct current fetch returned 403; precise live page freshness is not established.
This map shows the race’s listed city, not a verified start or finish. Exact start and finish locations are not confirmed.
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Price not yet confirmed
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Official organizer information
Recorded source snapshot, prepared Oct 10, 2026. Availability, fees and logistics may change. Live details will refresh when available; the recorded details may change. This snapshot date is a data retrieval date, not a new organizer verification.
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