Rio Linda, California · Saturday, March 27, 2027
The Bad Ass Backyard Ultra is a backyard ultra and ultra event held on Saturday, March 27, 2027. It is located at Dry Creek Rd in Rio Linda, California.
Join us as we have fun raising funds in support of the bleeding disorders community!
Featuring:
Vampire Run 5K – join us at our first ever 5K on the trails of Roseville, CA! All runners will get a special Vampire Run medal and entry into our Community Festival. We encourage capes, teeth, and costumes! Entry fees are $30 for adults and $10 for those under 14. Five and under can enter the festival for free. This is a timed run.
Food – all entrants will receive coffee from a coffee cart, juice, donuts, and other snacks! Who could pass up sno-cones and popcorn?
Games and Fun! – join us for carnival games, crafts, and face painting…all included in the race fee!
Schedule of Events:
8:30 5K starts
9:00 Carnival and booths open
11:00 Bleeding Disorders Remembrance Ceremony
11:15 1 Mile Walk
12:00 Carnival closes
Event Location
Location: Wild Runners Fair Oaks, 10149 Fair Oaks Blvd, Fair Oaks, CA
Participant Packet Pick Up
Saturday, October 24, 2026, 10 am – 4 pm
Race Day, Sunday, October 25, 2026, 6:30am - 7:30 am
Location: Wild Runners Fair Oaks, 10149 Fair Oaks Blvd, Fair Oaks Ca 95628
Race Day Schedule
6:30 am - 7:30 am: Race day registration and packet pick up
7:30 am: All final items dropped off for the La Ofrenda
8:05 am - Kids Races begin
8:20 am - Day of the Dead progression to starting line
8:30 am - Day of the Dead 5k/10k race begins
9:30 am - Awards ceremony and costume contest
Swag & Event
All participants receive:
Bib number, timing device and safety pins
Short-sleeved event shirt
Finisher medal
Coupon for one-free tamale for each participant*
Special offers from our sponsors
Redeemable only at the post-event expo and festival on October 25, 2026.
Family-Friendly Walk/Run Events: The Day of the Dead 5k has something for every generation to enjoy from a 5k for adults to our Kid Races.
Live Entertainment: Immerse yourself in Mexican tradition with live music and performances. With stilt walkers and live music, transport yourself to another time as we pay homage to the cultural heritage of our grandparents.
La Ofrenda: To honor loved ones who have passed, bring offerings, such as photographs, flowers, nostalgic items, and foods as we create a collective space of remembrance and gratitude. All items should be placed on La Ofrenda by 7:30am in front of the Wild Runners store at 10149 Fair Oaks Blvd.
Antojitos Delights: Enjoy the flavors and culinary delights that our grandparents cherished. In addition to free home-made tamales for race participants, indulge in the food and delectable treats of Mexican heritage.
Post-Race Festival and Expo: Unwind and connect with fellow participants post race! Explore our Community Partner and vendor booths showcasing the latest in fitness, wellness, and recovery services.
5k Course
The race kicks off with a 0.5-mile downhill through the charming Old Fair Oaks Village neighborhood and over the bridge. Following a 3.2-mile out-and-back path along the picturesque American River Trail towards Bannister Park, the course remains entirely on paved roads and trails, catering to participants of all abilities and those with strollers. The race concludes with an approximate half-mile ascent back to the finish line.
Day of the Dead 5k race course - Wild Runners Fair Oaks
Awards & Age Divisions
Awards ceremony to follow event at 9:30 a.m. for the 5k and costume contest. Prizes for overall male and female winners will be presented. Top three finishers in each age division will receive a special prize. Age-group winners pick up prizes at the Awards table.
Top boy and girl finishers in the 1/4 and 1/2 mile races will receive a special prize. All other kid finishers will receive medals.
Top 3 finishers in the male and female races will respectively receive:
1st Place: $100 gift card to Wild Runners
2nd Place: $50 gift card to Wild Runners
3rd Place: $25 gift card to Wild Runners
1st place finishers in each Age Group (5k Run) will receive a free pair of socks from our sponsor from OS1st:
12 & Under, 13-15, 16-18, 19-24, 25-29, 30-34, 35-39, 40-44, 45-49, 50-54, 55-59, 60-64, 65-69, 70-74, 75-79, 80+
Costume Contest:
1st Place: $100 gift card to Wild Runners
2nd Place: $50 gift card to Wild Runners
3rd Place: $25 gift card to Wild Runners
Rules & Guidelines for all entrants*
Bib numbers must not be altered, should be worn on the front of the runner, and be visible.
No unregistered runners, walkers or pacers.
Wearing headphones is discouraged.
No bicycles.
Your pup is welcome to participate in the 5k race (always on leash and after signing a waiver).
Strollers are welcome.
Walkers/runners of all abilities and capabilities welcome.
Shirts are not guaranteed for the late registration ( you can ask for previos year shirt)
No refunds
The Jewel of the Sierra Nevada
November 7-8, 2026
Welcome to the 2026 Rio Del Lago Endurance Runs Presented by Altra!
🎉 Celebrating 25 Years of the Rio 100 & 5 Years of the Rio 50K!
The celebration is on! The Rio Del Lago Endurance Runs presented by Altra return on November 7, 2026, marking the 25th anniversary of the legendary Rio 100 Mile Endurance Run and the 5th running of the fan-favorite Rio 50K.
Whether this is your first Rio or your twenty-fifth, we’re doing cartwheels to welcome you to this milestone year. Together, we’ll honor a quarter century of endurance, community, and trail magic on one of Northern California’s most iconic courses.
🌄 About the Races
Rio 100 Mile Endurance Run presented by Altra
A true test of grit, determination, and heart. The Rio 100 takes runners on a breathtaking journey from Folsom to Auburn and back, showcasing miles of rolling singletrack, river views, and the rugged beauty of the Sierra foothills.
Rio 50K Endurance Run presented by Altra
Now in its 5th year, the Rio 50K starts alongside the 100 milers at Beal’s Point and follows the scenic early miles of the course. With stunning views along Folsom Lake, Lake Natoma, and the infamous Johnny Cash Trail, it’s the perfect distance for your first ultra or your fastest 50K yet!
🌟 A Milestone Year — A Legendary Experience
As we celebrate 25 years of Rio, expect an unforgettable weekend filled with tradition, camaraderie, and celebration. From world-class race organization and well-stocked aid stations to the warmth of our incredible volunteers, this year’s event will capture everything that makes Rio Del Lago truly special.
🎽 All Entries Include:
NorCalUltras Goody Swag Bag
Commemorative 25th Anniversary Technical Race Shirt
Finisher Medallion
100 Mile Finisher Belt Buckle (sub-30-hour finishers)
100 Mile Finisher Athleisure Lightweight Pullover
Neversecond Gels on Course
Skratch Hydration on Course
B-Tag Chip Timing
Bob and Brandt's Breakfast Bistro
Chef Tim’s “Soup for the Soul”
Beer Garden
🏕️ Plan Your Race Weekend
Visit our official website for detailed race information, course maps, and lodging options in our host city of Folsom, California.
💛 Join the Celebration
Be part of history as we honor 25 years of the Rio 100 and 5 years of the Rio 50K — a milestone weekend filled with tradition, community, and endurance.
25 Years Strong. 25 Years of Grit. 25 Years of Rio.
We can’t wait to celebrate this special year with you on the trails!
– The NorCalUltras Team