Roosters Backyard Ultra returns to Rohr Park in Chula Vista, California on November 14th, offering runners a unique challenge that tests both physical endurance and mental fortitude. This event is set against the backdrop of San Diego's picturesque landscapes, where participants will traverse smooth, hard-packed trails known for their firm and slightly soft conditions. The race takes place within Sweetwater Valley’s rolling hills, providing an intimate setting amidst nature. On race morning at 7am, runners can expect a cool yet crisp atmosphere with temperatures ranging from mild to chilly. Rohr Park in Chula Vista offers a serene environment that is both challenging and rewarding for its participants. Car camping will be available in the parking lot, allowing racers to spend the night before the event and wake up refreshed at their starting location. The park’s natural setting also includes grassy fields where pop-up tents are permitted. Launched three years ago by Race Director Jose Sosa Jr., Roosters Backyard Ultra has become a cornerstone of the running community in San Diego, California. Each year, hundreds of runners converge on Rohr Park to push their limits and achieve new personal bests. The event supports local initiatives focused on youth development and health awareness within the Chula Vista area. The course at Rooster’s Backyard Ultra features a smooth trail with firm and slightly soft conditions, making it ideal for testing endurance over distance. Participants will face one gentle hill that has become a favorite among runners for its manageable incline and scenic views. The race starts on Sweetwater Road in Bonita, CA, where the finish line also awaits after each loop. A single aid station is located near the start/finish area to provide refreshments throughout the event. Weather conditions are expected to be mild with clear skies and a low UV index of 2.0 (Low), making it comfortable for runners to push their limits without worrying about excessive heat or humidity. The trail will remain firm underfoot, allowing participants to maintain a steady pace over its smooth surface. Temperatures should range from cool mornings to slightly warmer afternoons. The event offers one distance: the Backyard Ultra.
backyard Start: 09:00:00 • Fee: $125.00
To register for Roosters Backyard Ultra, visit https://ultrasignup.com/register.aspx?did=137325 and complete your entry by paying a registration fee of $125.00 per participant. Registration will remain open until November 9th at midnight. Bib pickup is available on race day from 6am to 8:45am in the park’s parking lot near Sweetwater Road, Bonita, CA 91902. Participants must bring a government-issued photo ID and proof of payment upon arrival for bib collection. Additionally, all runners should ensure they are physically prepared for multiple loops around Rohr Park. The race starts promptly at 7am on November 14th from the intersection of Sweetwater Road in Bonita, CA. The event welcomes participants aged 18 years and older who must adhere to the course rules regarding camping equipment and tent types as specified by Race Director Jose Sosa Jr. Roosters Backyard Ultra is an opportunity for runners looking to challenge themselves within a supportive community environment. Roosters Backyard Ultra in Chula Vista, California on November 14th offers participants a unique blend of physical endurance testing and mental fortitude building, making it a compelling event for serious runners seeking a new personal record.
Races Offered
Backyard Ultra ( 4.167 mile loop )
Nov 14, 2026
straighten
Distance —
6.7K
terrain
Type —
Running
timer
09:00
sell
$125.00
Weather History
These values represent the 3-year monthly averages for November in San Diego.
thermostatTemperature
10.9° / 20.8°
wb_sunnyFeels like
8.7° / 18.8°
light_mode
Avg sunshine hours
9h 7m
water_drop
Avg rainfall
1.8 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
7.4 km/h (Light breeze)
opacity
Sweat loss rate
Moderate
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Low (2.0)
humidity_mid
Humidity
66.5%
wb_twilight
Sunrise
07:19
nightlight
Sunset
17:47
About San Diego
Learn more about the host city, San Diego.
From balmy beaches with a laid-back attitude to a gleaming modern image, San Diego offers much for the tourist to enjoy. Situated on the Southern California seacoast, San Diego is the second largest city in the state, with 1.4 million residents (2020), and has long attracted travelers for its ideal climate, miles of beaches, and location on the Mexican border right across from Tijuana.
