Race Discovery
Sgrail Marin - Triathlon & Trail Half Marathon
Sgrail Marin - Triathlon & Trail Half Marathon logo

Sgrail Marin - Triathlon & Trail Half Marathon

San Rafael, California, United States View on map
Oct 02, 2026 – Oct 04, 2026 (America/Los_Angeles local time)
Triathlon

About this race

Welcome to the SGRAIL Marin - Triathlon and Trail Half Marathon!

Registration

  1. June 26, 2026 (12:00 PM PST) - Pre-Registration Starts
  2. July 12, 2026 - Early Bird Registration Starts
  3. August 4, 2026 - Regular Registration Starts
  4. September 18, 2026 - Late Registration Starts

September 25, 2026 - Last Day for Triathlon, Triathlon Relay & SGRAIL Challenge Registration

September 30, 2026 - Last Day for Trail Half Marathon Registration

DISTANCES: (ALL COURSES)

  • TRIATHLON - Kids Event (13 & Under) = Details TBA
  • TRIATHLON - Olympic Distance = 1,500 Meter Swim / 40K Bike / 10K Run
  • TRIATHLON - Olympic Relay (2 or 3 person relays) = 1,500 Meter Swim / 40K Bike / 10K Run
  • TRAIL HALF MARATHON = 13.1 Miles/21K
  • SGRAIL CHALLENGE= Triathlon + Trail Half Marathon

EVENT WEEKEND SCHEDULE:

  • THURSDAY - TBA
    • Bib Pick-up
  • FRIDAY - TBA
    • Bib Pick-up
    • Kids Fun Event
  • SATURDAY - 7:00 AM Gates Open | 8:30 AM Roads Close | 9:00 AM Start Time | 1:00 PM Roads Open
    • Olympic Triathlon
    • Olympic Triathlon Relay
  • SUNDAY - 7:00 AM Gates Open | 8:30 AM Start Time | 12:30 PM Event Ends
    • Trail Half Marathon

Pick your distance

Triathlon

Kids "Fun" Event

Oct 02, 2026 Kids "Fun" Event 5:00 PM
Free
Closed

Olympic Triathlon

Oct 02, 2026 Ultra 9:00 AM
$275.00
Closed

Olympic Relay

Oct 02, 2026 Ultra 9:00 AM
$415.00
Closed

Running

SGRAIL Challenge - Triathlon & Trail Half Marathon

Race both the Triathlon on Saturday and the Trail Half Marathon on Sunday

Oct 02, 2026 Ultra 9:00 AM
$350.00
Closed

Trail running

Trail Half Marathon

Oct 02, 2026 Half-Marathon 8:30 AM
$115.00
Open

Typical race-day weather

Based on 4 years of Open-Meteo archive data for this event's race dates in San Rafael, plus the 3 days either side.

Temp (°C)
Minimum temperature (race-week average) 7.9° / Maximum temperature (race-week average) 19.8°
Feels Like (°C)
Minimum feels like — heat index / wind chill (race-week average) 5.9° / Maximum feels like — heat index / wind chill (race-week average) 19.8°
Peak wind (km/h)
Strongest wind of the day (race-week average)
14.2
Precip (mm)
Precipitation over the day (race-week average)
0.1mm
Humidity
Mean relative humidity (race-week average)
72.5%
Sunrise
Sunrise at the start line on October 2, 2026 (PDT)
Sunset
Sunset at the start line on October 2, 2026 (PDT)
Daylight
Hours between sunrise and sunset on race day
11h 44m

The sun rises at 7:06 AM and sets at 6:51 PM local time (PDT) in San Rafael on October 2, 2026 — 11h 44m of daylight.

Course

No course map published yet.

The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.

Reviews

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Results — Sgrail Marin - Triathlon & Trail Half Marathon

2023 edition View Results
2022 edition View Results
2021 edition View Results

Other races near San Rafael

Different organizers, within 40 miles, in the next three months

Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.

  • Entries, prices, waves and inclusions — the event's official registration page
  • Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
  • Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
  • Comparisons and counts — Race Discovery calendar, 3 San Rafael events

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