An independent outdoor journalTrails · Rivers · Roads less traveled

The next starting line

Prospective races.

Find a place. Pick a climb. Bring a few good billy goats.
A growing race shelf, organized by where you want to go.

Put those uphill feet toward TETON CREST TRIPLE →

These California races come from our High-Flyer field notes. TETON CREST TRIPLE is independent of Brazen’s series: your recorded ascent from these races or other qualifying outings can count toward 39,088 feet.

Typical months are subject to change. Confirm current dates and routes with each organizer. Within each location, cards follow typical calendar order.

Marin County, California

01 / routes
Schematic route map for Double Dipsea at STINSON BEACH ↔ MILL VALLEY, not to scale.
DOUBLE DIPSEA+4,500 ft

Double Dipsea

Stinson to Mill Valley and back on the Dipsea Trail, via Cardiac Hill, Muir Woods, and Old Mill Park.

Typically heldAugust*

  1. TURNAROUND
  2. CARDIAC
  3. MUIR WOODS
  4. OLD MILL / TURN
  5. START / FINISH

Published cutoff checkpoints: Old Mill Park (6.8 mi), Muir Woods Aid (8.6 mi), Cardiac Aid (10.6 mi).

Brazen course notes ↗

Lake Chabot, California

03 / routes
Schematic route map for Brazen New Year’s Day Half Marathon at LAKE CHABOT / CA, not to scale.
HALF MARATHON+2,075 ft

Brazen New Year’s Day Half

A mostly-dirt loop around Lake Chabot, run in reverse from the New Year’s Eve course.

Typically heldJanuary*

Cutoff checkpoints

  1. Aid station · 10.7 mi

Profile drawn from the organizer’s published route. Elevations and route versions may vary.

Brazen course notes ↗

Schematic route map for Bad Bass Half Marathon at LAKE CHABOT MARINA / CA, not to scale.
HALF MARATHON+2,075 ft

Bad Bass Half Marathon

A Lake Chabot loop with rolling hills and a power-hike climb up Live Oak.

Typically heldJuly*

Cutoff checkpoints

  1. Aid station · 4.3 mi
  2. Aid station · 8.7 mi

Profile drawn from the organizer’s published route. Elevations and route versions may vary.

Brazen course notes ↗

Schematic route map for Brazen “Almost” New Year’s Eve Half Marathon at LAKE CHABOT / CA, not to scale.
HALF MARATHON+2,075 ft

Brazen “Almost” New Year’s Eve Half

A rolling Lake Chabot loop, with the half course mostly on dirt trail.

Typically heldDecember*

Profile drawn from the organizer’s published route. Elevations and route versions may vary.

Brazen course notes ↗

Mount Diablo, California

04 / routes
Schematic route map for Diablo Trails Challenge Half Marathon at CASTLE ROCK / MT. DIABLO, not to scale.
HALF MARATHON+2,492 ft

Diablo Trails Challenge

Dirt trails climb from Castle Rock toward Curry Point, then loop back through Mount Diablo State Park.

Typically heldApril*

Cutoff checkpoints

  1. Curry Point · 7.9 mi

Profile drawn from the organizer’s published route. Elevations and route versions may vary.

Brazen course notes ↗

Schematic route map for Diablo Trails Challenge 50K at CASTLE ROCK / MT. DIABLO, not to scale.
50K+8,246 ft

Diablo Trails Challenge

Castle Rock, Rock City, Curry Point, the summit, Juniper, and Burma mark the long mountain loop.

Typically heldApril*

Cutoff checkpoints

  1. Curry Point · 13 mi
  2. Summit · 16.5 mi
  3. Juniper · 23.1 mi
  4. Burma · 27.3 mi

Profile drawn from the organizer’s published route. Elevations and route versions may vary.

Brazen course notes ↗

Schematic route map for Diablo Summit Stomp Half Marathon at CASTLE ROCK / MT. DIABLO, not to scale.
HALF MARATHON+2,492 ft

Diablo Summit Stomp

Dirt trails climb from Castle Rock into Mount Diablo State Park; the longer 30K reaches the summit.

Typically heldOctober*

Profile drawn from the organizer’s published route. Elevations and route versions may vary.

Brazen course notes ↗

Schematic route map for Diablo Summit Stomp 30K at CASTLE ROCK / MT. DIABLO, not to scale.
30K+4,254 ft

Diablo Summit Stomp

The longer climb runs from Castle Rock to the Mount Diablo summit, with a high-country return.

Typically heldOctober*

Cutoff checkpoints

  1. Helipad · outbound · 9 mi
  2. Summit · 12 mi
  3. Helipad · return · 15 mi

Profile drawn from the organizer’s published route. Elevations and route versions may vary.

Brazen course notes ↗

East Bay parks, California

04 / routes
Schematic route map for Badger Cove Half Marathon at LAKE DEL VALLE / CA, not to scale.
HALF MARATHON+1,948 ft

Badger Cove Half Marathon

A hilly loop through the emerald trails and rolling ridges around Lake Del Valle.

Typically heldApril*

Profile drawn from the organizer’s published route. Elevations and route versions may vary.

Brazen course notes ↗

Schematic route map for Wildcat Half Marathon at WILDCAT CANYON / CA, not to scale.
HALF MARATHON+2,204 ft

Wildcat Half Marathon

Fire-road climbs with a singletrack stretch and wide Bay views from Wildcat Canyon.

Typically heldMay*

Profile drawn from the organizer’s published route. Elevations and route versions may vary.

Brazen course notes ↗

Schematic route map for Bear Creek Half Marathon at BRIONES REGIONAL PARK / CA, not to scale.
HALF MARATHON+3,088 ft

Bear Creek Half Marathon

A rolling Briones loop finishes with a shaded 1.1-mile singletrack descent.

Typically heldAugust*

Cutoff checkpoints

  1. Aid station 2 · 5.79 mi
  2. Aid station 3 · 9.92 mi

Profile drawn from the organizer’s published route. Elevations and route versions may vary.

Brazen course notes ↗

Schematic route map for Rocky Ridge Half Marathon · Series Finale at LAS TRAMPAS / SAN RAMON, CA, not to scale.
HALF MARATHON+3,989 ft

Rocky Ridge Half Marathon

A figure-eight through Las Trampas climbs out of the valley, crosses east, and reaches Rocky Ridge Trail.

Typically heldSeptember*

Cutoff checkpoints

  1. Aid station 3 · 9.36 mi

Profile drawn from the organizer’s published route. Elevations and route versions may vary.

Brazen course notes ↗

Santa Cruz Mountains, California

02 / routes
Schematic route map for Trailquake Half Marathon at SANBORN PARK / CA, not to scale.
HALF MARATHON+2,906 ft

Trailquake Half Marathon

Redwoods, fire roads, and singletrack lead to the high point of Sanborn Park.

Typically heldMay*

Profile drawn from the organizer’s published route. Elevations and route versions may vary.

Brazen course notes ↗

Schematic route map for Summit Rock Half Marathon at SANBORN COUNTY PARK / CA, not to scale.
HALF MARATHON+2,867 ft

Summit Rock Half Marathon

Fire roads and singletrack climb through Sanborn’s redwoods to high ground and open views.

Typically heldDecember*

  1. SANBORN
  2. SINGLETRACK
  3. SUMMIT ROCK
  4. START / FINISH

Brazen course notes ↗

Auburn, California

01 / routes
Schematic route map for Auburn Half Marathon at AUBURN OVERLOOK / CA, not to scale.
HALF MARATHON+2,465 ft

The Auburn Half Marathon

Western States Trail to No Hands Bridge and toward Cool, then back to Overlook Park.

Typically heldSeptember*

Cutoff checkpoints

  1. Aid station 4 · 9.7 mi
  2. Aid station 5 · 11.85 mi

Profile drawn from the organizer’s published route. Elevations and route versions may vary.

Brazen course notes ↗

Salmon overlays indicate approaches to published cutoff checkpoints, not verified withdrawal hotspots. Maps and profiles are illustrative and not for navigation. Double Dipsea and Summit Rock use original brand-styled redraws. Check official course maps before heading out.