The 2026 installment of Project 13.1 will return on Saturday, March 21, 2026. Registration will open on October 1, 2025. There will only be 500 spots available in this event so if you plan to race, please grab your spot early. More details coming soon.

America’s Fastest Half

The Course

The Project 13.1 course, renowned as one of the fastest in the country, is a USATF/IAAF-certified route designed for speed. Runners will head out for roughly 3/4 mile, make a 180-degree turn, pass the start line, and then complete four clockwise loops around the lake. To ensure everyone follows the shortest possible path, we'll have someone marking the tangents along the course, giving you the most efficient line for every loop.

Race Day Information!

  • Two Waves: In order to provide the best possible race experience for all athletes and minimize lapping and overcrowding out on the course, we will be running this event in two waves. The waves will be: 

    • 7:00 AM: For those aiming to run 1:16:00 or faster.

    • 8:25 AM: For those aiming to run 1:16:00 or slower.

    **The cutoffs for each race are subject to change. They will likely be in the 1:15 - 1:19 ranges and will be determined based on final entries. Athletes will have the ability to select which race they would prefer to race in.

  • Bib Pickup: We will have a bib pickup at Rockland Lake State Park, Parking Lot 5, from 2-5 PM the day before the event. You can also grab your bib on race day starting at 5:45 AM.

  • Pacer Targets: Anticipated pacer targets for each wave can be found below. Once again these are subject to change and will be determined based on final entries.

    • 7:00am: Wave 1 (Sub-1:16 Runners)

      • 1:03:00 

      • 1:05:00

      • 1:06:00

      • 1:08:00

      • 1:10:00

      • 1:11:00

      • 1:13:00

      • 1:15:00

    • 8:25am: Wave 2 (1:16+ Runners)

      • 1:16:00

      • 1:18:00

      • 1:20:00

      • 1:21:00

      • 1:22:00

      • 1:24:00

      • 1:25:00

      • 1:27:00

      • 1:30:00

  • The event will start in Parking Lot 5. There will be spots there for about 100 or so cars. After that lot fills up you will be required to park in Parking Lot 4, at the bottom of the map below. Please keep in mind that that is about a 1/3rd mile walk from the starting line.

  • All participants receive a complimentary hot breakfast with their race entry, featuring eggs, French toast, roasted potatoes, baked goods, and more. We’re also offering a limited number of breakfast tickets for friends and family who want to enjoy a meal while cheering you on.

  • A water station will be located near the start/finish line, along with designated tables for individualized bottle service.

Additional Information

Is there a time standard to enter this event?

Kinda! Project 13.1 is built for runners aiming to complete a half marathon in under 90 minutes. We’ll have pacers to support runners going for times under that goal, and if you anticipate running a slower time, be aware that you might find yourself running solo—and other races may offer a better experience for you this spring. That said, if you’re up for the challenge and excited about what this race represents, we’d be happy to have you!

I am interested in pacing? How do I signup?

This event relies on incredible pacers! If you're interested in pacing one of the groups listed above, let us know by filling out this form. Pacing this event is a great way to log a hard workout, and you’re welcome to pace the first half and then finish the race. Pacers receive free entry to a future Trials of Miles event of their choice, event swag, and breakfast after the event. Questions? Email joe@trialsofmilesracing.com.

Is there a capacity limit on this event?

Yes. Like we did last year we anticipate having two races each with around 250-300 participants. Once we sell out of those initial spots there will be a waitlist.

WHere should I stay?

If you are coming from out of town and need a place to stay near the race course, we have a room block reserved at the DoubleTree by Hilton Hotel, Nanuet (425 East Route 59), which is a 15 min drive from the park. It’s $129/night and the cutoff date is March 7. The group code is TMP. Use this link to reserve a room.

Project 13.1 V1-v3

This will be our fifth installment of Project 13.1, a race that we first hosted in November 2020 during the height of the pandemic. That first race saw Thomas Toth 1:04:07 (4:53/mile) and Annmarie Tuxbury in 1:14:38 (5:42/mile) take home the wins. In September 2021, we hosted the second edition with larger fields led by Patricio Castillo (1:02:14, 4:45/mile), and Susanna Sullivan (1:10:49, 5:24/mile). Our third event, held in early 2023 saw three men and four women dip under the half marathon OTQ times, led by Nathan Martin in 1:02:41.75 (4:47/mile) and Jacqueline Gaughan in 1:11:17.33 (5:27/mile).

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California Distance Night | December 13