SGRAIL Marin - Triathlon & Trail Half Marathon 2026
- Date
- Race weekend: Friday to Sunday, October 2 to 4, 2026
- Start time
- 5:00 PM start (Los Angeles)
- Location
- San Rafael, California
- Entry fee
- From Free
- Included with entry
- Includes a shirt
Registration is open.
We earn a small commission when you register through this link, at no cost to you. Details
Official race websiteAdd to calendar: Apple or Outlook · Google
Events and entry fees
| Event | Distance | When | Entry fee | Cap |
|---|---|---|---|---|
| Friday, Oct 2, 2026 | ||||
| Kids "Fun" Event | Kids | Oct 2, 20265:00 PM | Free | – |
| Saturday, Oct 3, 2026 | ||||
| Olympic Relay | Olympic TriathlonRelay or teamOpen water swim | Oct 3, 20269:00 AM | $390 | – |
| Olympic Triathlon | Olympic TriathlonOpen water swim | Oct 3, 20269:00 AM | $265 | – |
| SGRAIL Challenge - Triathlon & Trail Half Marathon | Ultra | Oct 3, 20269:00 AM | $330 | – |
| Sunday, Oct 4, 2026 | ||||
| Trail Half Marathon | Half Marathon | Oct 4, 20268:30 AM | $105 | – |
Entry fees exclude processing fees. Prices and dates come from the race's registration page and refresh nightly.
Race day planning
Entry fee schedule
- Kids "Fun" Event: Free until Sep 30.
- Olympic Relay: $390 until Oct 1.
- Olympic Triathlon: $265 until Oct 1.
- SGRAIL Challenge - Triathlon & Trail Half Marathon: $330 until Oct 1.
Online registration closes Oct 1, 2026, unless the race fills first.
Light and altitude
Sunrise on race morning is at about 7:05 AM, and the Kids "Fun" Event starts at 5:00 PM. The start sits about 260 feet above sea level.
Fees exclude processing fees. Comparisons use current entry fees and published results from races nearby.
Start location and course
McNear’s Beach Park, San Rafael, CA 94901
The pin marks the address the race lists, which is usually the start. The organizers have not shared a course map with us yet.
2023 results
All results (3 years)Sprint Triathlon
Olympic Triathlon
Olympic Relay
Aggregated from official results for SGRAIL Marin - Triathlon & Trail Half Marathon. Individual finisher names are not stored here.
How fast do you need to be at SGRAIL Marin - Triathlon & Trail Half Marathon?
At the 2023 Sprint Triathlon, the fastest tenth finished in 1:26:00 or better, the top quarter in 1:34:10, and half the field in 1:46:15; the last tenth came in after 2:08:50.
At the 2023 Olympic Triathlon, the fastest tenth finished in 2:44:18 or better, the top quarter in 2:54:08, and half the field in 3:15:55; the last tenth came in after 4:01:25.
At the 2023 Olympic Relay, the fastest tenth finished in 2:27:43 or better, the top quarter in 2:39:54, and half the field in 2:47:04; the last tenth came in after 3:24:39.
| Age | Women | Men |
|---|---|---|
| Under 20 | n/a | 1:45:46 |
| 20-29 | 1:35:00 | 1:19:28 |
| 30-39 | 1:29:36 | 1:21:46 |
| 40-49 | 1:41:34 | 1:23:25 |
| 50-59 | 1:43:42 | 1:22:36 |
| 60-69 | n/a | 1:49:33 |
Groups with fewer than five finishers are left out. Awards vary by race; check the race's rules.
What would my time get me?
Where a finish time would have placed in 2023.
Swim, bike and run splits at SGRAIL Marin - Triathlon & Trail Half Marathon
At the 2023 Sprint Triathlon, the bike decided the most: the middle of the field lost about 6:55 to the top quarter there, 59% of the gap across the three legs.
| Leg | Top 10% | Top 25% | Median | Slowest 25% |
|---|---|---|---|---|
| Swim | 6:41 | 7:01 | 7:38 | 8:35+ |
| T1 | 5:03 | 11:21 | 13:32 | 16:22+ |
| Bike | 44:19 | 47:37 | 52:58 | 59:05+ |
| T2 | 1:26 | 1:44 | 2:26 | 3:22+ |
| Run | 27:56 | 29:53 | 34:33 | 39:54+ |
Each column ranks finishers on that leg alone, from the race's published results. T1 and T2 are transitions.
At the 2023 Olympic Triathlon, the bike decided the most: the middle of the field lost about 12:53 to the top quarter there, 47% of the gap across the three legs.
| Leg | Top 10% | Top 25% | Median | Slowest 25% |
|---|---|---|---|---|
| Swim | 24:10 | 26:52 | 30:07 | 33:37+ |
| T1 | 3:07 | 3:59 | 5:36 | 11:25+ |
| Bike | 1:25:00 | 1:29:44 | 1:37:45 | 1:49:51+ |
| T2 | 1:37 | 2:09 | 2:54 | 3:48+ |
| Run | 45:06 | 49:38 | 56:07 | 1:06:01+ |
Each column ranks finishers on that leg alone, from the race's published results. T1 and T2 are transitions.
Finishers by year
Up 8 percent since 2021.
All events combined, from official results.
SGRAIL Marin - Triathlon & Trail Half Marathon Sprint Triathlon year by year
From 2021 to 2023, the field went from 112 to 228 finishers, and the median time rose from 1:06:53 to 1:46:15.
| Year | Finishers | Median | Fastest tenth | Winner |
|---|---|---|---|---|
| 2023 | 228 (+21%) | 1:46:15 | under 1:26:00 | 1:07:22 |
| 2022 | 188 (+68%) | 1:31:05 | under 1:14:53 | 59:58 |
| 2021 | 112 | 1:06:53 | under 56:14 | 46:10 |
From each year's official results for the Sprint Triathlon; virtual options are left out.
Typical race-day weather
Around October 2 the day usually runs from 55°F at dawn to 77°F in the afternoon, with measurable rain on about 4% of days. Cold snaps dip to 52°F and hot years reach 93°F.
Based on 75 days within a week of the date over the last 5 years, from historical weather for the start area. Not a forecast.
Race details
- Where
- McNear’s Beach Park, San Rafael, CA 94901Map
- Course
- Trail
- Start elevation
- About 260 feet
- Included with entry
- Ryzon Premium T-Shirt
- Distances
- Olympic Triathlon, Half Marathon, Ultra, Kids
- Editions
- 2026 (Oct 3, 2026), 2025 (Apr 12, 2025), 2023 (Oct 28, 2023), 2022 (Oct 29, 2022), 2021 (Oct 30, 2021)
Organize this race? Add details or a correction
Quick answers
- When is SGRAIL Marin - Triathlon & Trail Half Marathon?
- It is a race weekend, Friday to Sunday, October 2 to 4, 2026: Kids on Friday; Olympic Triathlon, Ultra on Saturday; Half Marathon on Sunday.
- How much does it cost?
- Entry starts at Free before processing fees.
- When does registration close?
- Online registration closes Oct 1, 2026, unless the race fills first.
- Do athletes get a shirt or medal?
- Entry includes a shirt, according to the race's registration page. Check it for sizes and whether kids' races get the same.
- What distances are offered?
- Olympic Triathlon, Half Marathon, Ultra, Kids.
- How big is it, and how fast?
- In 2023, 228 athletes finished the Sprint Triathlon; the median finish was 1:46:15 and the winner finished in 1:07:22.
- Where does it start?
- McNear’s Beach Park, San Rafael, CA 94901.
From the organizers
REGISTER NOW — REGULAR PRICING IS ON. We extended regular pricing. Don't wait.
Last day — Triathlon, Relay & SGRAIL Challenge: Sep 30 · Last day — Trail Half Marathon: Sep 30
DISTANCES
Olympic Triathlon — 1,500 m swim / 40K bike / 10K run
Olympic Relay (2–3 people) — 1,500 m swim / 40K bike / 10K run
Trail Half Marathon — 13.1 mi / 21K
SGRAIL Challenge — Triathlon + Trail Half Marathon (both days)
Kids "Fun" Event (13 & under) — Friday, October 2 - 1 Mile Bike / 0.6 Mile Run
All participants of this race will receive a complimentary Annual Youth Membership
EVENT WEEKEND SCHEDULE