Sunday, October 21st

Join us for our flagship race, capping the year with the most challenging routes and right in the middle of peak race season. The Pasadena Trail Half  route showcases our best and toughest trails for even the most experienced trail runners. Register soon as Pasadena Trail Half spots sell out!


Trail Race Series

The final and most popular of the series, the Pasadena Trail Half  and 5K/10K! Remember, the Trail Half is a challenging event and is known to sell out early. Receive your Series Gift at this event, after completing the 2018 Pasadena Trail Race Series!


Race Details

Everything from early packet pick up and addresses to finish festival info can be found here. Answers to all your basic questions


Runner Perks

The whole package! Check out all the race features and inclusions that come along with your race registration.


Course Maps

Distance, elevation profiles, terrain details and more can be found here.


Training Partners

Pasadena Running Company & Partners offer a variety of opportunites for you to train and prepare yourself for upcoming races.


Trail Tips

New to trail running or looking to improve your skills? Check out these articles for tips on maximizing your trail running experience.



Didn't find what you're looking for? Additional details & info in our FAQs section.


Race Details

Pasadena Running Co. presents the 2018 Pasadena Trail Half & 5K/10K. The third in a series of (3) trail running events in our 2018 Race Series. Explore Pasadena's beautiful and vast connected trail system and challenge yourself on the varied terrain surrounding our  great city.  We'll be offering (3) distances options: 5K, 10K & Half Marathon.

Early Packet Pick Up

  • Time: Saturday, October 20th | 11:00A - 4:00P
  • Location: Run With Us Pasadena
  • Address: 235 N Lake Ave. Pasadena, CA
  • Required Items: ID/Driver License & Signed Waiver

Race Day Timeline

  • 7:00A - Registration Opens
  • 7:30A - Trail Half  Start
  • 8:00A - 10K Start
  • 8:15A - 5K Start
  • 9:00A - Post Race Festival Begins
  • 10:00A - Overall & A/G Awards
  • 11:30A - Event Conclusion

Race Location

Hahamongna Watershed Park, nestled in the Foothills of Pasadena and unknown to many local residents offers a variety of interconnected trails, oak woodlands, picnic areas, equestrian riding & disc golf. Within the Angeles National Forest, the Watershed flood basin greatly contributes to the City of Pasadena's water conservation efforts.


Race Parking

Race day parking info to be announced.

Runner Perks

  • Pasadena Running Co. Race Shirt
  • 2018 Trail Half Commemorative Medal
  • Race Goodie Bag w/ Sponsor Swag & Special Offers
  • Electronic/Chip Timed Event w/ SmartResults
  • Warm-Up & Cool Down Yoga Sessions on Race Day
  • Exclusive Offers & Discounts to Run With Us Pasadena 
  • FREE Training Plans & Advice from Pasadena Pacers 
  • Professionally marked & supported race course
  • FREE Event Photos to download
  • Post-Race Fruit, Breads & Drinks from Pasadena & Whittier Pacers

Course Maps

5K Run Course Review:

  • Distance: 3.12 Mi.
  • Elevation Gain: + 306 ft.
  • Trail Type: Mixed Use/Truck Trail
  • Featured Climbs: N/A
  • Difficulty Rating: 2.5/10 - Beginner

10K Run Course Review:

  • Distance: 6.2 Mi.
  • Elevation Gain: + 400 ft.
  • Trail Type: Mixed Use/Fire Roads 
  • Featured Climbs: Gabrieleno Trail
  • Difficulty Rating: 4.5/10 - Intermediate

Trail Half Course Review:

  • Distance: 13.12 Mi.
  • Elevation Gain: + 1855 ft.
  • Trail Type: Single Track/ Rocky Terrain
  • Featured Climbs: El Prieto Canyon/Brown Mtn Rd.
  • Difficulty Rating: 7.5/10 - Experienced 

Training Partners

Pasadena Running Company & Partners offer a variety of opportunites for you to train and prepare yourself for upcoming races.   Here's a quick list of training runs, local run clubs and groups that can help you get ready for race day!

FREE PREVIEW RUN hosted by Run With Us Pasadena

Join other registrants in the months prior to race day for a preview of the Trail Half marathon route for the upcoming race. We encourage runners new to trail running or participants looking to run the Trail Half to join us and review the challenging terrain. 


Pasadena Running Company Partner, Run With Us Pasadena offers Weekly Monday Night Training Runs from their store on Lake Ave. Runners can select from (2) different distances each Monday night and often enjoy great raffles and post-run treats. Run With Us also offers rotating Sunday AM Trail Runs stopping at great locations throughout San Gabriel Valley. 


In addition to being a Pasadena Running Company Partner the Pasadena Pacers is a completely FREE Run Club offering multiple training runs weekly and provide Pacer Leaders offering expert training/advice for runners. Trail-loving Pacer Groups also have rotating trail runs in Griffith Park and Greater Pasadena Area. Check out the Pacer Nation site for additional details & schedules.


Join Pasadena's 1st social run club that meets every Tuesdays at 6pm at Dog Haus Biergarten (93 E. Green St.) in Old Town Pasadena! Run a 5K and meet new friends at happy hour, post-run. Membership is FREE and you earn incentives at various milestones when you continue to run with us! All levels welcome. Dog Haus Running Club is an affiliate of FFP Running Clubs, a 501c(3) non-profit organization dedicated to promoting a stronger culture of Fitness, Fun, and Philanthropy. 

Trail Running Guide

New to trail running? Check out this sweet article from Runners World with helpful tips & tricks for you. 

Looking to take your training and racing to the next level? Read the Expert Trail Guide article below for pro tips and training options.  


What if it rains?

The event will take place rain or shine! We do not offer refunds or deferrals due to weather. In case of flooding, routes may be altered. 

I registered, and can no longer attend, can I have a refund?

Unfortunately, there are no refunds offered due to injury, pregnancy, business trips, illnesses, or any other reason. However, we will miss you! To accommodate, we will allow you to transfer your bib to another participant. Transfers will not be accepted within 10 days of the event. 

Is the event timed?

Yes! Each event in the series is professionally timed by Clear Timing. Visit Pasadena Running Co. after the race for official results. 

I’m slow, do the races have time limits?

Each distance does have a time limit. However, the limits are all achievable by a standard walker. As long as you don’t stop to read a book under the shade of a tree, we will have a medal waiting for you at the finish line!

Race Photos?

Limited photos will be available post-race free of charge. Stay tuned for details, and be sure to wear your bib on the front of your shirt!

How will the course be marked?

Each distance will be marked on the groud with arrows made of flour! Additional signage will be posted throughout the courses. Before the run, visit the Registration Booth to see a sample of the course arrow. 

Are there aid stations on course?

Yes! Each distance will have at least one aid station. All participants running over 5 miles are required to carry hydration with them. Hydration options include handheld water bottles and hydration back packs. Check out the inventory at Run With Us!