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Calero Trail Run (Winter)

Calero Trail Run (Winter), San Jose
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Trail in United States, San Jose

Distances

  • Trail

    50K

    50 km

    Start: Dec 6, 03:00 PM

    Pre-registration: 115.00 EUR

  • Trail

    Trail Marathon

    42.2 km

    Start: Dec 6, 03:00 PM

    Pre-registration: 105.00 EUR

  • Trail

    25K

    25 km

    Start: Dec 6, 03:00 PM

    Pre-registration: 95.00 EUR

  • Trail

    Half Marathon

    21.1 km

    Start: Dec 6, 03:00 PM

    Pre-registration: 85.00 EUR

  • Trail

    15K

    15 km

    Start: Dec 6, 03:00 PM

  • Trail

    10K

    10 km

    Start: Dec 6, 03:00 PM

  • Trail

    5K

    5 km

    Start: Dec 6, 03:00 PM

  • Trail

    1 Mile

    1.6 km

    Start: Dec 6, 03:00 PM

  • Trail

    Kids Run

    1.6 km

    Start: Dec 7, 02:30 PM

About

A trail run at Calero County Park in San Jose offering distances from a kids run to a 50K, with single track, hills, and panoramic vistas. It serves as a trainer for Western States, featuring ample aid stations and volunteer opportunities.

Catering & aid stations

Water, Gatorade, soda, chips, chocolates, candy, power bars, sandwiches, and fruit. Vegetarian and vegan options always available. For longer distances, encouraged to bring your own nutrition and drop bags; checked drop bag service available at start/finish and Rancho Cañada del Oro Aid Station.

Pacers

Pacemaker/Pacer: The term does not appear in the source material; no pacer-specific info found.

Results

View official results

Typical weather in San Jose

Monthly averages based on historical data (2000–present).

Jan59°43°
07:21
17:13
Feb60°44°
06:58
17:47
Mar64°46°
07:18
19:16
Apr68°48°
06:33
19:43
May75°52°
05:59
20:10
Jun82°56°
05:47
20:30
Jul85°60°
06:00
20:28
Aug85°60°
06:25
20:00
Sep84°60°
06:51
19:16
Oct76°55°
07:16
18:31
Nov65°47°
06:48
16:58
Dec58°43°
07:15
16:52

Weather data by Open-Meteo

What's included in entry

  • Race morning bib pick-up (opens an hour before start)
  • At least one fully stocked aid station at every distance
  • Water, Gatorade, soda, chips, chocolates, candy, power bars, sandwiches, fruit; vegetarian/vegan options
  • Checked drop bag service for longer distances at start/finish and Rancho Cañada del Oro
  • Finish medal for all participants
  • Performance tech shirt available for $15 during registration or on race day

Prices & signup

  • Half Marathon85.00 EUR
  • 25K95.00 EUR
  • Trail Marathon105.00 EUR
  • 50K115.00 EUR

FAQ

How many aid stations will there be and what kinds of food can I expect?

There will always be AT LEAST one fully stocked aid station at all our races. We will always have water, Gatorade and soda in stock for you. We also stock up on chips, chocolates, candy, power bars, sandwiches, and fruit, while ensuring that vegetarian and vegan options are always available for our runners. We strongly encourage all longer distance runners with special dietary needs (or cravings such as potatoes, special branded supplements or hydration, PB&J, etc.) to prepare their own nutrition and place it in a drop bag that can be checked in with staff the morning of the race. These will be transported to/from aid stations by staff, accessible to runners during the race and available to pick up at the finish line. Please see our drop bags section below and additional information on each of our race pages.

When and where can I pick up my race bib?

Unless otherwise specified via email or our event race page, Bib Pick-up happens with registration on race morning, which opens an hour before race start.

What happens if I hurt myself during the race?

All races are staffed by at least one EMT. First Aid kits available at all stations.

Where do I park my car?

All races are conveniently located within a short walk from parking lots. We ensure that you don’t have to pay to park for the majority of our races, but please car pool if you can!

What if I can’t make it to a race I signed up for?

Send us an email at least 24 hours before the race’s scheduled start time and we can transfer your race registration to a future race of your choosing (some conditions may apply) for a distance equal to or shorter than the one you signed up for. No-shows and requests received within 24 hours of race start forfeit their registration fees, so please contact us at least 24 hours before the race to take advantage of our ‘most generous in the industry’ rollover policy.

Can I be refunded for a race if I don’t make it?

Unfortunately no. All race registration sales are final. We are happy to accommodate a race transfer if you get in touch with us at least 24 hours beforehand, but we do not offer refunds, and we cannot transfer “no-shows” on race day.

When will race results and photos of the race be posted?

We aim to have all race results published to our website within 72 hours of the race finish. Often this occurs much sooner. You can find your results here. Please check our CrowdPic-linked race photos page here. Continue to check back within the week following the race as additional photos may continue to be added!

Can I register for a race on the day of the race?

Race day registration is available for an additional fee as indicated on each registration page. We accept Cash, check, or Credit Cards via Venmo on the morning of the race.

Where can I find additional information for a race I am signed up to?

Any updates to our races, such as cancellations or changes will be emailed to you via the email you signed up with and all information will be published to our Facebook Page and website.

Is there anything I should plan to bring with me on race day?

Our aid stations are fully stocked with most everything you need. However, for our longer distances, we recommend that you bring a running pack/hydration backpack or water bottle(s) and at least one warm clothing item. Anything else you might like to bring is at your discretion. We do offer checked drop bag service and we strongly encourage all longer distance runners with special dietary needs to prepare their own nutrition and place it in a drop bag that can be checked in with staff the morning of the race. These will be transported to/from aid stations by staff, accessible to runners during the race and available to pick up at the finish line. Please see our drop bags section below and additional information on each of our race pages.

Does everyone receive a T-Shirt and Medal?

All of our race participants will receive a medal at the finish line for their distance. Performance tech shirts with the Troy’s California Trail Runs logo are available for $15 at the time of your online registration and can be purchased on race day as well. Order ahead to guarantee we have your size.

How are the races marked?

All races are marked with ribbons and gypsum chalk. Full course maps, including elevation profiles, are available on our website for each race. Additionally, we present a trail briefing 15 minutes before the start of our races.

What happens in case of inclement weather?

All courses and distances are subject to change due to unforeseen circumstances, including weather. If this happens, we will do the best we can to keep the intended distances as close as possible on any new courses.

What is your cancellation policy?

If an event is canceled by the Park Service Authority due to a natural disaster or bad weather, a property owner decides to cancel the event, or the race director needs to cancel for any other reason, your registration will be rolled over to another event. Due to the massive expense of putting on these events, it is not possible to issue refunds if we must cancel an event.

Do you offer any discounts?

Active Military & First Responders receive a 15% discount. First Responders include firefighters, law enforcement officers, paramedics, and emergency medical personnel. Please email team@tctruns.com to process your military or first responders registration discount before registering.

Can I volunteer for your races?

Yes Please! Visit our Volunteers Page for more information.

Will there be a photographer at your races?

Yes! We love and appreciate our volunteer photographers, and make an effort to have at least one to capture the magic for each of our races. If you have any race day photos you’d like to share with us, please visit our Photos Page.

Can I wear headphones/earphones at your races?

Yes, however, when you come into aid stations we recommend that you remove your listening devices so that we can communicate with you effectively. We also highly recommend being aware of your surroundings on the trails, which headphones/earphones might have an affect on.

Are poles allowed at your races?

Yes, they are allowed at all of our trail races.

How does your drop bag service work?

We strongly encourage all longer distance runners with special dietary needs (or cravings such as potatoes, special branded supplements or hydration, PB&J, etc.) to prepare their own nutrition and place it in a drop bag that can be checked in with staff the morning of the race. These will be transported to/from aid stations by staff, accessible to runners during the race and available to pick up at the finish line. This included service is usually available for all runners attempting any distance longer than a half marathon, but varies at each race by terrain, staffing and aid station placements. Additional details that pertain to a specific race will be listed on that race’s web page. While we always take great care to safeguard your belongings, we strongly encourage using a sturdy but disposable (if possible) bag and not checking any electronics or valuable items as we cannot be held liable for the contents. We have several runners at each race who simply forget to retrieve their drop bags at the finish and it creates extra work for everyone coordinating their returns. While we will make every attempt to return drop bags to the finish line prior to the runner finishing, they are subject to delay on occasion and we would not want anyone upset they are waiting for important items.

Last updated: Jun 6, 2026, 12:03:40 AM

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