Wine Country Century — May 5, 2018 Four routes through Sonoma County wine country with options for 35 miles, 66 miles, 100 miles, or 130 miles. Limit 2,500; sponsored by Santa Rosa Bicycling Club (registration opens Feb. 1)
Flat, Fast, Fun Bike Ride (3F Century) — May 5, 2018 Billed as a flat century through the pastoral scenery of Colusa and Sutter counties. Also a metric century and 38-mile ride. Starts in Colusa.
Tour of Novato — May 5, 2018 The route follows rural roads with rolling hills and a few challenging climbs. Tour of Novato cyclists choose either a 40- or 13-kilometer route. Sponsored by School Fuel, the Novato Foundation for Public Schools to benefit students and classrooms.
Grizzly Peak Century — May 6, 2018 A 100-mile ride up Grizzly Peak in eastern suburbs of San Francisco Bay; leaves from Campolindo High School, Moraga; sponsored by Grizzly Peak Cyclists
Tour de Cure – Yountville (Napa Valley) — May 6, 2018 Starts at the Veterans Home of California, featuring several options from 10 to 100 miles. Fund-raiser for American Diabetes Foundation.
Race Across America Cycling Challenge – Oceanside — (No ride in 2018; see RAAM Challenge Texas) Presented by Race Across America, the weekend includes two non-competitive rides (60 and 120 miles), 2 endurance races (200 and 400 miles), and an expo and post-event party. The 120-mile ride is a Gran Fondo; the races are solo, or 2- or 4-person teams.
Cruisin’ the Conejo — Taking a break in 2017 Celebrating its 32nd year in 2016, the southern California bike ride features five route options up to 100 miles. Leaves from Thousand Oaks, sponsored by Conejo Valley Cyclists.
Healdsburg Bicycle Tour — May 12, 2018 Bicycle rides of 23, 37 or 60 miles are routed in and around Healdsburg in the wine country of Sonoma County.
I Care Classic — May 12, 2018 The South County Century and Bicycle Tour features a 100-mile course, a 100-kilometer course, a 50-kilometer course and a 20-mile course. Based out of Morgan Hill.
Tour of Long Beach — May 12, 2018 Options include a 5-mile Free Family Fun Ride, the picturesque 30-mile course on the bike paths and streets of Long Beach, the 62-mile through Long Beach to Newport Beach or the 100-mile Cruz Gran Fondo which loops through Long Beach then heads south down the Southern California Coast through Sunset Beach, Huntington Beach, Newport Beach and Laguna Beach. Benefits pediatric cancer research at Miller Children’s & Women’s Hospital Long Beach.
NorCal AIDS Challenge (Sacramento) May 10-13, 2018 This 330-mile bike ride in Central California to benefits HIV/AIDS services in the Sacramento Valley. There’s also a shorter weekend option. Online support for training and fund-raising.
Central Coast Double Century — May 12, 2018 The bike ride leaves Paso Robles and climbs into the Santa Lucia Range and down the Salinas Valley; total 209 miles and 13,000 feet of climbing; part of the Triple Crown; there’s also a 170-mile Central Coast Challenge.
Tour de Lincoln — May 12, 2018 Based in Lincoln, the bicycle tour offers four routes — The Pleasure Cruise (10 miles), The Rolling Hills (20 miles), The Country Climb (40 miles) and the Metric Century (63 miles). Longer rides have some climbing. Benefits Rotary service projects.
Davis Double Century — May 19, 2018 A one-day, 200-mile ride through Yolo, Solano, Napa, and Lake counties. Presented by Davis Bike Club. Always 3rd Saturday in May.
Sonoma County Backroad Challenge — May 19, 2018 Features three bike ride options on Sonoma County’s pastoral roads — 99, 70 and 35 miles. The loops start and finish at Lagunitas Brewery in Petaluma. Presented by Petaluma Sunrise Rotary.
San Diego Century Bicycle Tour — May 19, 2018 A 102-, 65- and 37-mile bike ride options are included in this year’s Encinitas Sports and Fitness Festival. Bicyclists make their way up Dos Pico Peak on the century ride for a 30-mile descent to the finish. Sponsored by city of Encinitas.
Tour of the Unknown Coast — May 19, 2018 Bicyclists can tour northern California’s remote Humboldt County on routes ranging from 20 miles to 200 miles; metric century and century bike rides offered as well.
Gold Country Cycling Challenge — May 19, 2018 Cyclists will tour the backcountry roads of Nevada County – the heart of California’s gold rush. Options of 100, 74, 54, and 35 miles.
Tour delle Vigne Lodi Sunrise Century — May 19, 2018 Presented by the Lodi Sunrise Rotary Club, the ride offers options of 50k, 100k and a 100 mile grand tour through the wine country surrounding Lodi.
Heartbreak Hundred — May 19, 2018 The third stage of the Planet Ultra King of the Mountains challenge. The 100-mile ride in the Los Padres National Forest starts near Lebec. 8,800 feet of climbing in this timed event.
Belgian Waffle and Belgian Wafer Rides — See April 15, 2018
Climate Ride California Central Coast — May 20-24, 2018 The bike tour explores the North Coast at 37 to 73 miles per day.
Strawberry Fields Forever — May 20, 2018 A fund-raiser for Cyclists for Cultural Exchange, with the express purpose of furthering peace and international understanding through exchanges between people with a common interest in cycling. Three route options of 30, 65 or 100 miles leaves from Pajaro Valley High School, 500 Harkins Slough Rd, Watsonville, CA, 95076.
Ride the Parkway — May 20, 2018 Choose from 3 different routes along the paved Jedediah Smith Memorial Bike Trail, stretching from downtown Sacramento to the Nimbus Fish Hatchery.
Apple Blossom Bike Tour — May 20, 2018 Several options for rides through El Dorado County’s vineyards and apple orchards.
Great Western Bike Rally — May 25-28, 2018 The rally over Memorial Day weekend in Paso Robles features 25 bicycling routes for rides of 5 to 100 miles. Also mountain biking routes and a bike train. Although most rides are unsupported, there is a supported century and metric century. Also bike swap, vendors, BBQ, etc. Tent camping or RV at the fairgrounds.
Indian Valley Century Bike Rides — May 26, 2018 Bicyclists can choose from a century, metric century, or a 30-miler. All rides start in Greenville.
Ride Ataxia NorCal — See June calendar
Ojai Valley Century — See June calendar
Sierra Century — See April calendar
Auburn Century — See June calendar
Sequoia Century — See June calendar
AIDS Lifecycle See June calendar.
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