Date
Sat, 3 Apr 2027
Start
08:00
Venue
Almaden Quicksilver County Park Hacienda Entrance, 21785 Almaden Rd, San Jose, CA 95120
San Jose, Santa Clara County
Countdown
April
A trail half marathon with real climbing, over 1,000 m on an out-and-back. It's a proper workout, not a casual jog.
Key facts
014.5-hour time limit
02Course cutoff at 12:30
03Out-and-back course
Create a free training plan for the Sierra Azul Trail Challenge 21 km
7-day free trial, no card required
The course
The route
San Jose
Distance21km
Total climb1,092m
StartElevation
0 kmDrag map to rotate20.8 km
Weather
Early-April, San Jose
17°CTypical high
7°CTypical low
2°CColdest in 20 years
26%Days with rain
Highs around 17°C and lows around 7°C, but it has dropped to 2°C. Rain on 26% of days.
NASA POWER data, 2006-2025, the week either side of race day
2025 results
Who finishes, and how
#RiderTimeAvg speed
01Katherine Lynch02:06:4910.0 km/h
02Diana Wilson02:14:089.4 km/h
03Chrissy Lynch02:21:199.0 km/h
6
Women finishers
2:31:07
Median time
8.4 km/h
Median speed
Women · 2025 results, as published by the organiser.
How fast could you finish?
Get a prediction based on your recent training
Organiser
OrganiserTroy's California Trail Runs
Websitetctruns.com
Instagram@troyscaliforniatrailruns
Running since2012
Training
Training for the Sierra Azul Trail Challenge 21 km
We don't do generic plans. We combine deep knowledge of this race's demands with your recent training, then build a plan with you that progresses as you do.
Beina integrates directly with your existing tools to understand your current fitness, and synchronise your planned sessions.
Intervals.icuWhat a Sierra Azul Trail Challenge 21 km plan targets
Typical sessions
21 km with 1,092 m of climbing
Time on feet and fatigue resistance
Fuelling and pacing for the whole event
What your weeks look like
Typical sessions
Long runs that build time on your feet
Tempo and threshold sessions to hold race pace
Back-to-back weekend runs for fatigue resistance
Not a generic schedule
Typical sessions
Built from your current fitness and the time you actually have
Adapts every week as Beina learns how you respond
Syncs your sessions straight to Garmin and Wahoo
One clear next session, never a wall of spreadsheet
Entries open now
Get your Sierra Azul Trail Challenge 21 km plan.
7-day free trial, no card required.
Other races at Sierra Azul Trail Challenge
More events in April in United States
Bedrock Valley Trail RunsSat, 3 Apr 2027 · Hemet→Behind the Rocks UltraSat, 3 Apr 2027 · Moab→Mt. Toby Ultra & Trail RacesExpected Early April 2027 · Sunderland→Mudslinger XCSat, 3 Apr 2027 · Blodgett→OC MTB Saddleback XC RaceExpected Early April 2027 · Saddleback Wilderness→Rough Road 100Expected Early April 2027 · Morris→
