Stefan Walz

Stefan is a former graphic designer and novice carpenter who enjoys road riding, mountain biking and commuting. He’s fascinated by the individuals that make up the fabric of the Tucson cycling community. When time permits, Stefan searches the city streets and west side trails via two wheels to discover new sights and unexpected terrain. The bike has become an ever-increasing and endearing hobby for him. When he’s not riding, Stefan enjoys spending time with his wife in their empty nest, teaching yoga and discussing proper nutrition while enjoying dessert.

Dr. Jody Bartz

Known as a passionate advocate for ALL kids—and it is fair to say that Jody is
incredibly enthusiastic about empowering kids and using bikes as “the tool.” She prides herself on connecting with families and the community in which she lives. You will most often find Jody on a bike–commuting, out on the gravel roads in the region, or on the amazing trails of Tucson. She enjoys competing in endurance gravel and mountain bike races and looks forward to mentoring our “junior” level (El Grupito and Manzo Elementary) youth who choose to race in the future or guiding those who want to embrace the bike as an awesome mode of transportation.

Jody has extensive program development experience, and a solid record of securing project funding, and looks forward to “leveling up” programs across Grupo. She is excited to bring her professional and personal experiences and combine those with my ability to enlist, engage, and mentor our amazing El Grupito team members to help grow our dynamic, youth-centered cycling program.

Sam Alexander

Sam has been involved with El Grupo for nearly a decade. Starting as a rider in 2013, Sam stayed with the program all the way through high school, racing and even placing 4th overall in the NICA high school MTB league. After high school, Sam shifted from racer to full-time commuter, graduated from the University of Arizona with a Bachelors in Photography, Video, and Imagery, and now is starting a photo-based festival for Southern Arizona. Sam has returned to coach with Grupito and help push the next generation of riders to be safe on the street and to ‘Be Your Own Rider’!

David Cross

David’s love of cycling has taken him on some pretty amazing bike rides. He completed the Lands End To John A Groats ride in the UK, an epic 1000 mile ride taking in Great Britain from its furthest two points. He has ridden some of the legendary climbs of the Pyrenees, traversing from the Atlantic… Read more »

Nikos Casto

Nikos was born in Tucson but spent five years living in Pennsylvania before moving back to Tucson where he attended high school and now college. Coming from a family of six with three sets of twins, Nikos has always focused on family and his connections with others. He believes in El Grupo as a way… Read more »

Deidra Bustos

Deidra Bustos grew up commuting the streets of Tucson by bike. She was a volunteer coach at El Grupo from 2014 until 1018. Deidra became a Pima Bicycle Ambassador in 2015 and has taught traffic safety skills in multiple schools across Tucson. She has been a mountain biker for eight years and started bikepacking in… Read more »

Juliana Cullen

The daughter of Brazilian immigrants, Juliana has lived in seven different states in the US and in Germany. She got into cycling after one move during high school when she enjoyed finding her way around her new town in New England. After moving to Colorado for college Juliana did some mountain biking and distance riding… Read more »