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2026 Almost New Year's Eve

2026 Almost New Year's Eve

Almost New Year's Eve: a festive trail half at Lake Chabot to close out the year.

Race Date

Dec 31, 2026

Location

Castro Valley, CA

Standout74

Quick facts

Date
Thursday, December 31, 2026
Location
Castro Valley, California
Distance
Half marathon (13.1 mi)
Course
Loop Course
Terrain
Trail
USATF certified
Not listed

Highlights

Good For

Beginner Friendly

Atmosphere

Low Key

The Experience

Celebrate the final miles of the year on the trails of Lake Chabot with Brazen Racing's Almost New Year's Eve event. Now in its 14th edition, this half marathon draws around 360 runners from some 13 states, with nearly a quarter returning year after year. The course loops the lake on dirt trails, offering a serene forest setting with waterfront views. The flat profile—elevation gain near zero—makes it an accessible option for runners of all levels, and the festive atmosphere encourages holiday spirit.

Race day in late December typically brings cool temperatures around 44–55°F and occasional rain, so a light jacket and trail shoes are wise. The event is part of a weekend doubleheader: run this half on Saturday and a second on New Year's Day to earn a coveted mega medal. With well-organized Brazen Racing logistics and a low-key, community vibe, it's a fitting way to ring in the new year without the crowds. The finish line festivities and the chance to log final miles in a beautiful setting make this a hidden gem for local trail runners.

Race-provided description

This is a trail race held at Lake Chabot in Castro Valley on New Year's Eve, offering half marathon, 10K, and 5K distances. It is part of Brazen Racing's New Year's weekend events, with an option to run a second half marathon on New Year's Day to earn a mega medal. The course is on trails, and the event is known for its festive atmosphere and opportunity to log final miles of the year.

Logistics

Race Day

Thursday, December 31, 2026

Start Time

TBA

Start Location

17600 Lake Chabot Road, Castro Valley, CA, 94546

Directions

Course Info

Course Type

Loop Course

Terrain

trail

Scenery

Lake River, Forest

Surface

Dirt Trail

Difficulty

Rolling Hills

Quality Score

Standout74
Methodology
Heritage20/20

14 years running

Size13/15

~364 finishers a year

Momentum2/5

shrinking

Loyalty20/20

23% returning runners

Course & details3/15

5 timing sources

National draw7/10

runners from 13 states

Front-pack speed0/5

winner 1:35:28

Weather10/10

typical high 56°F

Race Day Weather

5-year historical avg

Start (Low)

44°

Afternoon (High)

55°

Ideal racing weather — cool and comfortable

0.4"

Precipitation

10 mph

Wind

84%

Humidity

Frequently asked

When is the 2026 Almost New Year's Eve?

The 2026 Almost New Year's Eve is held on Thursday, December 31, 2026.

Where does the 2026 Almost New Year's Eve take place?

It takes place in Castro Valley, California.

What distances does the 2026 Almost New Year's Eve offer?

The half marathon (13.1 miles).

Is the 2026 Almost New Year's Eve course flat and good for a PR?

The 2026 Almost New Year's Eve is a rolling hills, loop course course.

HalfRuns editorial — independent, no paid placement.

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