2026 Lake Chabot Trail Challenge (Half Marathon & 5K) 2026 — Castro Valley, CA

Date
June 7, 2026
Location
Castro Valley, CA
Venue
17404 Lake Chabot Road
Start Time
8:00 AM
Entry Fee
$40.00 – $70.00
Events
Half Marathon, 5K Run
Includes
Lake Chabot Trail Challenge Cotton T-Shirt | Lake Chabot Trail Challenge T-Shirt (cotton)
Register NowRegistration Open
“Beginning July 1, 2024, the “Honest Pricing Law” or “Hidden Fees Statute,” SB 478, makes it illegal for businesses to advertise or list a price for a good or service that does not include all required fees or charges other than certain government taxes and shipping costs.” RACE INFO: We are so excited to celebrate the 42nd annual Lake Chabot Trail Challenge Half Marathon and 5K. This race is well regarded amongst serious trail runners in the outlying areas. The race begins at 8am for the Half Marathon and 8:30am for the 5K. Please arrive early so that you may find parking, pick up your bibs, use restrooms facilities, and be properly prepared to race before the start. Race takes place rain or shine and there are no refunds. RACE COURSE: The half marathon course is a scenic, hilly loop, mainly on dirt fire roads. The ridge-line views look down upon scenic Lake Chabot, surrounding grassy slopes, and eucalyptus groves. Mt. Diablo and San Francisco Bay are visible along the route. There ar

Hotels Near This Race

Find accommodation close to the start line in Castro Valley, CA. Sorted by distance from the race venue. Book early — race weekend hotels fill fast.

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2026 Lake Chabot Trail Challenge (Half Marathon & 5K) 2026 — Castro Valley, CA

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Race Travel Insurance

Don't forget travel insurance for June 7.

You've trained for months and booked a trip to Castro Valley, CA. A pre-race injury, a delayed flight, or a family emergency can derail the whole thing. Travel insurance can help cover your race entry fee, hotel, and flights if you can't make it, and may cover medical costs if something goes wrong on the course. Plans typically only run 5-7% of your total trip cost — and running events are covered under standard plans with no additional coverage needed.

  • Trip cancellation up to 100% of prepaid costs
  • Running events covered under standard plans — no add-ons needed
  • Trip interruption up to 150% of non-refundable costs
  • Emergency medical up to $250,000
  • Cancel For Any Reason add-on available
  • 24/7 real-time support

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