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| Event | Distance | When | Entry fee | Cap |
|---|---|---|---|---|
| Kid's Run (6yo & younger, 1/4 mi) - Free! | Kids | Jul 10, 20277:50 AM | Free | – |
| 30K | Other | Jul 10, 20278:00 AM | $75$85 after Jul 4, 2027 | – |
| 50K | 50K | Jul 10, 20278:00 AM | $90$100 after Jul 4, 2027 | – |
| Half Marathon | Half Marathon | Jul 10, 20278:00 AM | $70$80 after Jul 4, 2027 | – |
| Marathon | Marathon | Jul 10, 20278:00 AM | $80$90 after Jul 4, 2027 | – |
| 10K | 10K | Jul 10, 20278:15 AM | $60$70 after Jul 4, 2027 | – |
| Coastal Testing | Other | Jul 10, 20278:45 AM | Free | – |
Entry fees exclude processing fees. Prices and dates come from the race's registration page and refresh nightly.
The Other fee goes up to $85 on Jul 4, 2027.
Online registration closes Jul 10, 2027, unless the race fills first.
At $90, entry is about 10 percent below a typical 50K in California, which costs $99.50 right now.
A typical finisher at a 50K in California runs 6:35:17, about 12:43 a mile, based on 21 races with published results. Women typically finish in 6:53:54 and men in 6:30:53.
Sunrise on race morning is at about 5:56 AM, and the Kid's Run (6yo & younger, 1/4 mi) - Free! starts at 7:50 AM. The start sits about 970 feet above sea level.
Fees exclude processing fees. Comparisons use current entry fees and published results from races nearby.
Harvey West Park (Friendship Picnic Area), Santa Cruz, CA 95060
The pin marks the address the race lists, which is usually the start. Course maps are the organizers' own.
Aggregated from official results (Coastal Trail Runs) for San Lorenzo River Trail Run. Individual finisher names are not stored here.
At the 2026 Half Marathon, the fastest tenth finished in 2:16:39 or better, the top quarter in 2:43:48, and half the field in 3:04:40; the last tenth came in after 4:28:51.
At the 2026 10K, the fastest tenth finished in 59:23 or better, the top quarter in 1:07:19, and half the field in 1:16:04; the last tenth came in after 1:39:24.
At the 2026 30K, the fastest tenth finished in 2:58:50 or better, the top quarter in 3:19:14, and half the field in 3:50:30; the last tenth came in after 5:42:21.
| Age | Women | Men |
|---|---|---|
| 20-29 | 2:29:54 | 2:42:08 |
| 30-39 | 2:52:54 | 2:12:02 |
| 40-49 | 3:10:46 | 2:07:27 |
| 50-59 | 3:04:42 | 2:40:37 |
| 60-69 | n/a | 2:31:12 |
| 70+ | n/a | 3:13:53 |
Groups with fewer than five finishers are left out. Awards vary by race; check the race's rules.
Where a finish time would have placed in 2026.
Up 25 percent since 2022.
All events combined, from official results.
From 2022 to 2026, the field went from 109 to 135 finishers, and the median time rose from 2:55:35 to 3:04:40.
| Year | Finishers | Median | Fastest tenth | Winner |
|---|---|---|---|---|
| 2026 | 135 (-8%) | 3:04:40 | under 2:16:39 | 1:58:41 |
| 2025 | 147 (-10%) | 3:00:57 | under 2:13:24 | 1:36:07 |
| 2024 | 164 (+27%) | 3:10:26 | under 2:19:49 | 1:51:50 |
| 2023 | 129 (+18%) | 3:11:08 | under 2:23:59 | 1:59:52 |
| 2022 | 109 | 2:55:35 | under 2:08:16 | 1:40:53 |
From each year's official results for the Half Marathon; virtual options are left out.
Slower than most California trail half marathons
The fastest quarter of the 2026 half marathon field finished under 2:43:48, against 2:21:30 in a typical California trail half marathon, so times here run 16 percent slower.
Compares the fastest quarter of each field, so walkers and first-timers do not skew it. It reflects the course and the field together: a flat course, cool weather, or a competitive crowd all make times faster.
Around July 10 the day usually runs from 54°F at dawn to 73°F in the afternoon, with measurable rain on about 0% of days. Cold snaps dip to 51°F and hot years reach 81°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.
What the organizers of San Lorenzo River Trail Run cover on their registration page, in brief.
Schedule and packet pickup
Race Day: Check-in beginning at 7:00 a.m. at Harvey West Park (Friendship picnic area). Please arrive 45min before your event to receive your bib and shirt. Event start times are listed here. Parking is free. Drop Bags (30K/Marathon/50K)…
Course
10K. Elevation Gain: 800'. Course Surface: Single Track (59%), Dirt Road (41%), Asphalt (0%). Half Marathon. Elevation Gain: 2,175'. Course Surface: Single Track (58%), Dirt Road (42%), Asphalt (0%). 30K. Elevation Gain: 3,000'. Course…
Course
10K. Andrew Wilkey, 32, Hayward, CA ('25) 37:55. Aksiniya Asenova, 32, Sunnyvale, CA ('15) 44:33. Half Marathon. Digger Lauter, 37, Oakland, CA ('21) 1:27:45. Sophia Ditty, 32, Santa Cruz, CA ('22) 1:46:20. 30K. James Ratliff, 19, Santa…
Shirt and medal
To guarantee a shirt, please register 10 business days prior to the event.
Awards
T-shirts will be given to all pre-registered runners. All finishers will receive a custom medal and 50K finishers will also receive a custom coaster. Overall Winners: The top 3 male and female overall winners of every distance will win an…
Rules and FAQ
Entry fees to Coastal events are non-refundable. DEFER YOUR ENTRY. To defer an event that is scheduled as planned: Things happen or you change your mind. If you're just not able to make the event that you had planned on, here are your…
Organize this race? Add details or a correction
Run through 300 foot tall, 1500 year-old Coastal Redwoods, lush stream canyons, open meadows, pine and oak forests, and high dry chaparral-covered ridges. The Half Marathon, 30K, Marathon, and 50K events cross the San Lorenzo River (shown above) multiple times!
(Distances are accurately measured using a Rolatape® surveyor's measuring wheel.)