Tarrell Kullaway

Executive Director

Tarrell leads MCBC’s team of active transportation professionals and guides the organization as it grows and continues to make Marin a safe and accessible place to ride a bike.

Tarrell comes to MCBC with 25 years of non-profit experience, including seven spent as Senior Director of Development for Cascade Bicycle Club, the nation’s largest statewide bicycle organization. While at Cascade, she grew total annual fundraising income by over 500 percent, enabling the construction of a new headquarters and community gathering space, as well as a “bicycle playground” for inner city youth.

Tarrell holds a BA in Communications from Lewis & Clark College and several advanced certificates in fundraising and non-profit development, including as a Certified Fundraising Executive (CFRE). 

Contact Tarrell

Tom Boss

Off-Road & Events Director

Tom joined MCBC in 2008. As the Off-Road and Events Director, he leads the Off-Road Program’s advocacy, education and environmental stewardship. He also manages multiple MCBC events, including the Dirt Fondo, Biketoberfest, and Bike to Work Day.

Tom grew up in Marin, where he adopted a deep appreciation for the outdoors at an early age. He serves on numerous regional boards and committees toward promoting both environmentally conscientious and recreationally inviting land management policies. He commutes to work by bike from the San Geronimo Valley and is happiest when immersed in nature on his mountain bike.

Prior to MCBC, Tom was a professional photographer for more than 10 years. He also ran a successful outdoor film series in Marin, Film Night in the Park. These activities developed the event planning, volunteer coordination and relationship building skills that he draws from to advance MCBC’s goals.

 Contact Tom

Gwen Froh

Education & Encouragement Director

Gwen joined Safe Routes to Schools in 2008. Promoted to Director in 2015, Gwen leads SR2S’s education and encouragement programs toward making active transportation safe and accessible for all Marin children.

Her accomplishments include developing one of the first Safe Routes to Schools Teen Programs in the country. In 2016, she received the Community Partnership Award from the Marin School of Environmental Leadership in recognition of her innovative work with students.

Gwen’s dedication is inspired by her passion for outstanding health. She believes that exercise is key to physical and academic success, and that it is a right, not a privilege. Gwen is often seen riding from MCBC’s Fairfax office to schools throughout Marin, or on her mountain bike where nature invigorates her creativity for working with children.

Prior to joining MCBC, Gwen served as the Chairperson and Business Manager for the Ross Valley School District’s YES Theater Program, and Co-Chaired Manor School’s Winter Faire, directing volunteers to raise over $100,000 for programs that benefit children. Gwen earned a Bachelor’s in Biology from Mount Holyoke College in Massachusetts. 

Contact Gwen

Warren Wells

Policy & Planning Director

Warren joined MCBC in early 2021. Serving as the Policy & Planning Director he is responsible for coordinating advocacy campaigns associated with the Road Program, aiming to complete the North-South and East-West Greenways, and to make bicycling and walking in Marin safer and more convenient.

Warren sees widespread bicycling as a key part of addressing issues of public health, economic justice, and climate change. He is a car-free commuter, giving up his keys in 2015. Since moving to the Bay, he has taken up recreational riding and has ridden hundreds of miles on Mount Tam and in the Marin Headlands.

An east coast native, Warren has experience as a local organizer, coach, and mediator working in restorative justice. He moved to California to earn a master’s degree in Urban and Regional Planning from UCLA and, after receiving his degree, served as a transportation planner for a private firm developing transit and bike/pedestrian projects across the Bay Area. 

Contact Warren

Lynn Liscio

Communications Development Manager

Lynn joined MCBC in 2020. As the Communications & Development Manager, Lynn is responsible for getting the messages you read across MCBC’s website, social media, and E-News out to you, while also assisting with fundraising efforts. She also helps oversee the day to day operations of MCBC. Contact Lynn for membership related questions.

Lynn is an avid bike rider who has traveled all over the world to ride her bike. Prior to joining MCBC, Lynn lived in Italy and led cycling tours around the region. She loves exploring new roads and trails on her bike and can be frequently found riding around Marin County. She is fluent in Italian and French and can share with you the best places to ride in Europe and North America.

Lynn holds a Master’s Degree in Environmental Studies from York University in Toronto and a Bachelor’s Degree in Environmental Science from the University of Guelph, in Guelph, Ontario.

Contact Lynn

Matt Farber

Program Manager, Cory's Ride

Matt joined MCBC at the start of 2021. As the Lead Instructor for Safe Routes to Schools Matt taught 1st - 12th grade students about the importance of bicycle safety, healthy lifestyles, active transportation, and the environment. During that same time, Matt also served as the Outreach Coordinator for MCBC, sharing the benefits of riding bicycles to the broader community through programs like Family Biking, Basic Street Skills, Cory’s Ride, and events like Ride With Us. Matt is now the Program Manager for Cory's Ride, an initiative that provides bikes, education, mentorship, leadership training, and advocacy support to youth in Marin.

Matt is an avid traveler and lover of the outdoors, and can be found hiking and biking pretty much any time he has a free moment. Prior to SR2S/MCBC, Matt led adult and family biking tours around the world for 8 years. He also worked for a number of youth development organizations, particularly ones focused on helping underserved communities and children with disabilities.

Matt holds a BA in Business Administration from the University of Florida and also graduated from the William Esper Studio Acting Conservatory in New York City.

Contact Matt

Cooper Miley

Volunteer Coordinator, Safe Routes to Schools

Cooper joined MCBC in the summer of 2021 as the Volunteer Coordinator for Safe Routes to Schools. Cooper is passionate about building community with parents, students, and educators in Marin County.

In his day-to-day activities, Cooper will be working with volunteers on developing and delivering programs and events for 1st-5th grade students, focused on the importance of active transportation, traffic reduction, bicycle safety, and a healthy environment. Additionally, Cooper will be assisting with MCBC programs designed to outreach to the broader community with an aim towards Family BikingBasic Street Skills, Cory’s Ride, and events like Ride With Us.

Cooper is an avid cyclist and lover of all things two wheels. In his free time, he can be found riding his road or mountain bike on the myriad of great roads and trails throughout the county. Prior to SR2S/MCBC, Cooper worked for Backroads selling cycling and hiking adventure trips. He is also an active coach with the National Interscholastic Cycling Association (NICA) and spends time coaching and mentoring high school athletes. Cooper holds a BA in Business Administration from the University of Baltimore. 

Contact Cooper

Sandy Allen

Administrative Assistant

Sandy joined the MCBC team in July 2021 as the Administrative Assistant.  She is responsible for assisting with communications, database management, and administration of day-to-day operations of the team. Please contact Sandy for bicycle parking requests and volunteer related questions.

Growing up an Army brat, Sandy has lived all over the United States. Moving to Marin County in 2011 she has enjoyed hiking with her dog, volunteering for Wildcare and cycling all over Northern California. Prior to joining MCBC Sandy owned a jewelry store in Sausalito for nine years, sold real estate in San Diego, managed web services for Total Gym, and worked as marketing director for a corporate relocation company.

Sandy has a degree in Art with a concentration in Photography from San Jose State University. She enjoys metalsmithing and can be found in her jewelry studio, gardening with her neighbors or out on the trails.

Contact Sandy

Peggy Clark

Program Manager, Safe Routes to Schools

Peggy joined the Safe Routes to Schools/MCBC team in 2007. As Program Manager, she coordinates bike and pedestrian safety education for elementary, middle and high school students in over 50 schools throughout Marin.

After facilitating corporate team building events and experiential high ropes courses for 10 years, Peggy discovered her passion for cycling. Her entire family cycles for both fun and function - commuting, running errands and exploring Marin County trails.

As Peggy likes to proclaim, “I don’t ride bikes to add days to my life, I ride to add life to my days!”

 Contact Peggy

Lou Goodwin

Instructor and Teen Coordinator, Safe Routes to Schools

Lou has been with Safe Routes to Schools since 2008. She teaches young people – ranging from 2nd graders to high school students – to safely navigate Marin’s roads, streets and crossings. As the Teen Coordinator, Lou inspires teen clubs to promote green transportation to their student bodies, saying, “There’s nothing that compares to a teenager’s enthusiasm!”

Lou grew up riding her bike through the streets of Chicago but was destined to live in California. You’ll regularly see her on local roads with her panniers full of Safe Routes supplies or other times “way the heck out there” in the mountains around Fairfax.

After 13 years spent working at the University of California, San Francisco and the Meyer Friedman Institute on heart disease research, Lou decided she would rather concentrate on the health and vitality of younger generations. Lou holds a Master’s in Cardiac Rehabilitation from the University of Wisconsin, La Crosse and a Bachelor’s Degree in Exercise Science from Northeastern Illinois University.

Contact Lou

Monica Leifer,

Bilingual Volunteer Coordinator, Safe Routes to Schools

Monica came aboard in 2014 as the Safe Routes to Schools Bilingual Coordinator. She promotes Safe Routes at schools with large Hispanic student bodies. Through events and competitions, Monica pursues the goal of steadily increasing the number of walkers, bikers and carpools in Marin’s bilingual schools.

Biking is an important weekend activity for the Leifer family. Monica and her family frequently ride to Phoenix Lake. Monica’s bike is also her primary mode of transportation to the Larkspur Ferry Terminal and the Downtown San Rafael SMART Station.

Prior to her job with Safe Routes, Monica was Assistant Director of Media Relations at the University of San Francisco. Previously, she worked as a television reporter for the Colombian national news, as the Press Secretary to the Minister of Finance of Colombia, and as a Sales/Marketing Manager at Latin Finance Magazine in Miami, Florida. Monica holds a Bachelor's Degree in Communication Studies and Journalism from the Pontificia Universidad Javeriana in Bogota. 

Contact Monica


Emma-Louise Anderson

Director, The Seed Fund

Debbie Alley

Civic Leader + Climate Advocate

Morris Beazley

MCBC Vice President, VP Autodesk Inc. (Retired)

Xantha Bruso

Principal, Strategic Electrification at The Cadmus Group

Mark Comin

RSA Security, LLC, Account Executive

Ken Cook

Environmental Working Group, President & Co-founder

Steve Giondomenica

Jennifer Harrison

Community Volunteer

Annabel Heinemann

Richard Petersen

MCBC President

Partner, Levin Easterly Partners

Francine Prophet

MCBC Treasurer


Dan Stevens

Co-Founder, VP of Business Development, Windfall

Julia Violich

Violich Farms & Capay Farms, Owner & CFO

Organization associations: USAC, USACF, NorCal, IMBA, NICA