San Francisco, California (United States of America) - "Mermaid Run - San Francisco". Mermaid Run San Francisco will be in-person (virtual option also available)! Mermaids ALWAYS receive a stylish race shirt, finisher medal and necklace. 10 Mile: Cross the GOLDEN GATE BRIDGE with the Sirena10 Mile course! Guaranteed to get the best of the BEST views of San Francisco. After crossing the bridge on the Pacific side you'll return on the bay side for stunning views of the San Francisco skyline. 10K: The 10K course goes up and into the Presidio for where you'll soak in views of the bay and the Pacific Ocean. Run underneath the Golden Gate Bridge and pass by the historic Fort Point before heading to the finish. 5K: Flat, yes totally flat... the 5K is great for joggers, walkers and runners looking for the picturesque views without the hills. Virtual: We also offer a virtual run for anyone who can't attend in person. Mermaid Dash: A 1.5 mile dash for girls and boys ages 6 to 12. The dash participants receive a medal, necklace and post race food. Note: The dash entry does not include a race shirt. www.raceroster.com/events/2025/97560/mermaid-run-san-francisco-2025

Half Moon Bay, California (United States of America) - "Annual Half Moon Bay Pumpkin Run by Senior Coastsiders". The Pumpkin Run, a tradition in Half Moon Bay for over four decades, treats participants to a majestic course which runs along the Coastal Trail. Portions of the course hug the coastline along the Pacific Ocean. All proceeds benefit Senior Coastsiders, a local non-profit dedicated to providing opportunities, support, and resources for older adults living on the coast from Montara to Pescadero and Skyline to the Sea. www.raceroster.com/events/2025/95409/47th-annual-pumpkin-run-by-senior-coastsiders-october-19-2025

San Diego, California (United States of America) - "SeaWorld 2025 Howl-O-Sprint". Get ready to hit the ground running at SeaWorld San Diego's 2nd Annual Howl-O-Sprint 5K Run on Sunday, October 19, 2025! Whether you run or walk, this 3.1-mile course will take you on a thrilling journey through the grounds of SeaWorld San Diego, complete with Halloween surprises, themed photo moments, and delightfully spooky characters popping up along the route. With the park decked out for SeaWorld's Howl-O-Scream and Halloween Spooktacular events, it’s the perfect way to add to your Halloween festivities. In addition to the 5K Run, the Kids Fun Run returns for its second year, giving little ones a chance to join the fun. All participants will receive an official race shirt, a race bib with a timing chip, a one-of-a-kind finisher medal, and eligibility for awards. Halloween costumes are encouraged, so come dressed in your spookiest or silliest attire for a frightfully fun time—but please note, masks are not permitted. Race day schedule: 5:30 a.m. parking lot and packet pickup opens, 7:00 a.m. 5K race start, 8:30 a.m. Kids Fun Run start. http://go.evvnt.com/3197681-0?pid=6562

Lincoln, California (United States of America) - "Wise Villa Fall Harvest Run". Like Running or Walking? Love Wine? This race is for you! Join us on Saturday, October 25, 2025 with start times at 8:30am and 10:30am (you will select your start time during registration) for an exciting "Harvest themed" event that features The Wise Villa Winery. Since their first vintage was released in 2009, Wise Villa has been a family owned and operated winery, estate vineyard, and Tuscan-style Gourmet Restaurant located in the heart of the Sierra Foothills Wine Appellation of Placer County. Their grapes are meticulously grown using organic and sustainable practices. During harvest they go a step further by triple sorting and implementing whole berry cold fermentation to retain a balanced wine with natural fresh fruit character. So, whether you are looking to run, walk or just enjoy the wonderful wine and camaraderie this race is a sure thing for a great time and an incredible experience! This race is timed and scored by J3 Timing. Results will be posted at J3Timing.com. Registration Includes: T-shirt: Super Soft Ring Spun Cotton t-shirt included! Wine Glass: Shatterproof, Collapsible, and Portable! Finisher Medal: Wine Glass Shaped Medal! Race Bib: Chip timed 5k run/walk. Results Posted Online. ...and of course, a pour of wine! Please note that the post race drink ticket is available race day only. Runners will also receive 15% off on wine bottles on race day. www.winerun5k.com

Los Angeles, California (United States of America) - "Annual LA Cancer Challenge 5K Walk/Run". Join us on Sunday, October 26, 2025, for the 28th Annual LA Cancer Challenge 5K Walk/Run, the signature fundraising event of the Hirshberg Foundation for Pancreatic Cancer Research. Held on the UCLA campus where much of the Foundation's research takes place the LACC brings together supporters of all ages to raise critical funds and awareness for pancreatic cancer. To date, this beloved Halloween-themed event has raised over $10 million and continues to unite the community in celebration, remembrance, and hope. Participants come together to honor loved ones, support survivors, and champion progress toward a cure. The LACC features a fun and festive morning of fitness and entertainment, including the Fit Family Expo, Candy Land Kids Zone, food and beverage booths and activity tents. In-person registration includes chip timing, a commemorative t-shirt, and custom bib. Medals will be awarded to the top three finishers in each age division, and overall winners will receive special prizes. Virtual registration is also available for those who wish to walk or run in their own neighborhood while supporting the cause. Whether you're racing in memory of someone special or showing up in costume for a fun-filled day, your participation fuels progress in the fight against pancreatic cancer. Register today and be part of the movement that brings us one step closer to a cure. http://lacancerchallenge.com