Public Service Events
Public Service Events
(Be sure to check back for updates
and additions)
(Be sure to check back for updates
and additions)
Embedded Files
and additions)
Beginning in early spring each year and continuing into early winter many ham radio operators from the Mt. Diablo Amateur Radio Club become involved in doing radio team communications to support various public service events that occur nearby. The events include long distance bike rides, bike races, running races, walkathons, a March for Babies, a half marathon, a Mt Diablo Trail Ride, and local city parades.
The locations include beautiful scenic areas such as nearby regional and wilderness areas, Mt. Diablo State Park, and municipal trails and parks. Some of the agencies and causes that we have helped are: Children's Hospital of Oakland, the MS Society, the March of Dimes, and Save Mt. Diablo.
Clubs that also organize events and we share operators with include:
MDARC (this page) mdarc.org/public-service
Livermore Amateur Radio Klub (LARK) livermoreark.org
Oakland Radio Communications Association (ORCA)
ww6or.org/public-service
Marin Amateur Radio Society (MARS)
w6sg.net/public-serviceSan Francisco Radio Club (SFRC) sfarc.org
Stockton-Delta Amateur Radio Club (SDARC) w6sf.org
Contact the MDARC Public Service Coordinator, Larry Loomer, KI6LNB to sign up for events.
Email laryloomer@yahoo.com
Public Service Events 2026
<2026 coming soon!>
Participating in these events is a thrilling experience for many different reasons. These include:
The magic of radio transmissions
The camaraderie of being part of a radio team that helps make things safer for hundreds, sometimes thousands of event participants
The chance to do something meaningful for a good cause
The fun and satisfaction of using your radio equipment and opportunity to learn its various capabilities in real-life situations
The beautiful places and settings that you get to enjoy
Radio operators are assigned to check points, or to support (SAG) vehicles, or are on bikes, or sometimes in boats. Radio communications in some of these areas can be a challenge, but very gratifying and a whole lot of fun! For most events all you need is a 2 meter hand-held radio with an extra battery. When you participate, consider bringing a family member or friend to show them the excitement of the ham radio hobby.
This is a fun way to get out and use your radio, help a worthwhile cause and gain valuable experience that will come in handy in the event of a major emergency or disaster. It's also great PR for the club and amateur radio in general.
Public Service Events - 2025 Past
LARK - Race to the Flagpole - Running Race
Saturday, January 25, 2025
Running race from-to Independence Park in Livermore
Radio Coordinator: John Street, WB6ETY
https://www.signupgenius.com/go/10C0844AEAD28A6FA7-race
SFRC - San Francisco Half Marathon - Running Race
Sunday, February 2, 2025
Running Race in San Francisco
Radio Coordinator: <antonis@aa6pp.org>
https://sanfranciscohalfmarathon.org/
LARK - Livermore Half Marathon - Running Race
Sunday, March 2, 2025
Running Race from-to Downtown Livermore
Radio Coordinator: George Moorhead, KG6GEM <kg6wiu1@comcast.net>
https://www.signupgenius.com/go/10C0844AEAD28A6FA7-livermore
https://livermorevalleyhalf.com
ORCA - Oakland Marathon - Running Race
Sunday, March 23, 2025
Running Race in Downtown Oakland
Radio Coordinator: Mike Pompa, KB6MP <mpompa@gmail.com>
https://www.ww6or.com/oakland-marathon-signup
MDARC - MS Walk
Sunday, March 30, 2025
Walk at Heather Farms in Walnut Creek
Radio Coordinator: Larry Loomer, KI6LNB <laryloomer@yahoo.com>
https://events.nationalmssociety.org/index.cfm?fuseaction=donorDrive.event&eventID=2216
MDARC - Diablo Trails Challenge - Running Race
Saturday, April 5, 2025
Running Race from Castle Rock Park, Walnut Creek
Radio Coordinator: Larry Loomer, KI6LNB <laryloomer@yahoo.com>
Brazen Racing https://brazenracing.com/diablotrailschallenge
LARK - Cinderella Bike Ride - in Livermore
Saturday, April 5, 2025
Ladies' Bike Ride around Livermore
Radio Coordinator: George Moorhead, KG6GEM <kg6wiu1@comcast.net>
https://www.signupgenius.com/go/10C0844AEAD28A6FA7-cinderella1
https://www.valleyspokesmen.org
ORCA - Sea Otter Classic - Laguna Seca Raceway
April 10-13, 2025
Festival in Salinas
Radio Coordination: https://sbcara.org/otter/
https://www.seaotterclassic.com/
MDARC - Primavera Ride - Rios Lovell Winery
Sunday, April 13, 2025
Bike Ride in Livermore Valley
See: Larry Loomer, KI6LNB <laryloomer@yahoo.com>
Tony Flusche https://ffbc.org/primavera/
MARS - MCBC Jane Fondo - Bike Ride
Saturday, April 19, 2025
Bike ride in Marin County
See: Larry Loomer, KI6LNB <laryloomer@yahoo.com>
https://marinbike.org/janefondo/
MDARC - Berkeley Hills Road Race
Saturday, April 26, 2025
Bike ride in the East Bay Hills
Radio Coordinator: Mark Walsh, KM6XU <mark@km6xu.com>
https://www.berkeleybike.org/?page_id=474
MARS - Ridge to Bridge Bike Ride
Saturday, April 26, 2025
Bike Ride in Marin County
See: Larry Loomer, KI6LNB <laryloomer@yahoo.com>
https://ridgetrail.org/ridge-to-bridge/
LARK - Devil Mountain Double Century Bike Ride
Saturday, April 26, 2025
Bike Ride in San Jose
Radio Coordinator: John Street <WB6ETY@sbcglobal.net>
https://www.signupgenius.com/go/10C0844AEAD28A6FA7-2022
https://devilmountaindouble.godaddysites.com/
MARS - Miwok 100k
Saturday, May 3, 2025
Running race in Marin
Radio Coordinator: Larry Loomer, KI6LNB <laryloomer@yahoo.com>
SDARC - Delta Century Ride
Saturday, May 3, 2025
Bike Ride in Lodi
Radio Coordinator: <w6sf.147165@gmail.com>
https://stocktonbikeclub.org/deltacentury/
LARK - Devil Mountain Double Run
Sunday, May 4, 2025
Running race in Danville
Radio Coordinator: George Moorhead, KG6GEM <kg6wiu1@comcast.net>
https://www.signupgenius.com/go/10C0844AEAD28A6FA7-devil1
MDARC - Hope Walk
Saturday, May 17, 2025
Walk at Heather Farms, WC, map
Radio Coordinator: Larry Loomer, KI6LNB <laryloomer@yahoo.com>
https://cancersupport.net/event/hope-walk/
SDARC - Linden Cherry Festival
Saturday, May 17, 2025
Festival in Linden
Radio Coordinator: <w6sf.147165@gmail.com>
https://lindenchamber.net/cherryfestival
LARK - Boy Scout Hike Berkeley Hills
Saturday, May 17, 2025
Scouts Hike 20 miles in Tilden Park
Radio Coordinator: Dave Shaw, WB6WTM <wb6wtm@arrl.net>
https://www.signupgenius.com/go/10C0844AEAD28A6FA7-scouts
MDARC - Lake Chabot Trail Challenge - Running Race
Sunday, June 1, 2025
Running race, 5k, and 1/2 Marathon in Castro Valley
Radio Coordinator: Larry Loomer, KI6LNB <laryloomer@yahoo.com>
Race Director: Rachel Lunt <teamlunt07@gmail.com>
https://www.castrovalleysportsfoundation.org/trail-challenge
ORCA - Sequoia Bicycle Challenge
Sunday, June 1, 2025
Bicycle race in Los Altos Hills
Radio Coordination: signup
MARS - Dipsea
Sunday, June 8, 2025
Running race in Marin
Radio Coordinator: Larry Loomer, KI6LNB <laryloomer@yahoo.com>
ALL - Field Day
Sat & Sun, June 28 & 29, 2025
Annual event, many locations
2730 Salvio St, Concord, CA
https://www.mdarc.org/activities/field-day
https://www.arrl.org/field-day including:
livermoreark.org, ww6or.org, sfarc.org, w6sg.net, w6sf.org, darc.club
LARK - 4th of July Race
Friday, July 4, 2025
Running race in Livermore
Radio Coordinator: George Moorehead, KG6GEM<kg6wiu1@comcast.net>
https://www.larpd.org/independence-day-dash-2025
MARS - MCBC Dirt Fondo
Saturday, July 19, 2025
Bicycle race in Marin
Radio Coordinator: Larry Loomer, KI6LNB <laryloomer@yahoo.com>
https://marinbike.org/event/2025-dirt-fondo
MARS - San Francisco Marathon
Saturday, July 27, 2025
Running race in San Francisco
Radio Coordinator: Larry Loomer, KI6LNB <laryloomer@yahoo.com>
MARS - Marin Century
Saturday, August 2, 2025
Bicycle race in Marin
Radio Coordinator: Larry Loomer, KI6LNB <laryloomer@yahoo.com>
MDARC - Skyline 50k
Sunday, August 3, 2025
Running race in the Oakland Hills
Radio Coordinator: Larry Loomer, KI6LNB <laryloomer@yahoo.com>
Scena Performance <adam.ray@scenaperformance.com>
https://scenaperformance.com/events/skyline-50k
LARK - Patterson Pass Road Race
Sunday, August 3, 2025
Bicycle race in Marin
Radio Coordinator: George Moorehead, KG6GEM<kg6wiu1@comcast.net>
https://www.signupgenius.com/go/10C0844AEAD28A6FA7-patterson1
MARS - Double Dipsea
Saturday, August 23, 2025
Running race in Marin
Radio Coordinator: Larry Loomer, KI6LNB <laryloomer@yahoo.com>
https://brazenracing.com/doubledipsea
MDARC - Moonlight on the Mountain Confirmed*
Saturday, September 6, 2025
Fund Raising catered dinner at Mt. Diablo's China Wall in Alamo
Radio Coordinator: Larry Loomer, KI6LNB <laryloomer@yahoo.com>
https://savemountdiablo.org 925-947-3535
MDARC - Dick Collins Firetrails 50M Confirmed*
Saturday, September 27, 2025
Running race in the Oakland Hills
Radio Coordinator: Larry Loomer, KI6LNB <laryloomer@yahoo.com>
Scena Performance <adam.ray@scenaperformance.com>
https://scenaperformance.com/events/dick-collins-firetrails
MDARC - Mothers Against Drunk Driving (MADD) Walk Confirmed*
Sunday, October 5, 2025
Walk From and To Civic Park, Walnut Creek, CA
Radio Coordinator: Lowell Richards, KA6LER <ler@lerichards.com>
https://www.walklikemadd.org/home
MDARC - Mount Diablo Challenge Confirmed*
Sunday, October 5, 2025
Bicycle race from Danville, CA, up Mt. Diablo
Radio Coordinator: Larry Loomer, KI6LNB <laryloomer@yahoo.com>
Brazen Racing https://brazenracing.com/diablotrailschallenge/
MDARC - pacificon.org
October 10, 11 & 12, 2025
Pacific Division Conference in San Ramon, CA
https://www.pacificon.org/registration/volunteers
https://www.pacificon.org/finding-everything/talk-in
https://www.mdarc.org/activities/pacificon-table
LARK - pacificon.org
October 10, 11 & 12, 2025
Pacific Division Conference in San Ramon, CA
Coordinator: George Moorehead, KG6GEM<kg6wiu1@comcast.net>
Sun Swap Meet https://www.signupgenius.com/go/10C0844AEAD28A6FA7-pacificon1#/
LARK Booth https://www.signupgenius.com/go/10C0844AEAD28A6FA7-44377069-lark#/
LARK - Habitat Cycle of Hope
Sunday, October 19, 2025
Bicycle Race from Patelco Center, Dublin, CA
Radio Coordinator: George Moorehead, KG6GEM<kg6wiu1@comcast.net>
https://www.signupgenius.com/go/10C0844AEAD28A6FA7-44577659-cycle
https://www.habitatcycleofhope.org/Race/CA/Dublin/CycleofHope
MDARC - Diablo Summit Stomp
Saturday, October 18, 2025
Running Race from Castle Rock Park, Walnut Creek, CA
Radio Coordinator: Larry Loomer, KI6LNB <laryloomer@yahoo.com>
Brazen Racing https://brazenracing.com/summitstomp
SDARC - Walk Against Alzheimer's
Saturday, October 18, 2025
Walk in Fairfield, CA
Radio Coordinator: w6sf.org
https://act.alz.org/site/TR/Walk2025/CA-NorthernCaliforniaandNorthernNevada?fr_id=18458
MDARC - Lake Chabot Trail Run Not Confirmed*
Saturday, November 8, 2025
Running Race in the Oakland Hills
Radio Coordinator: Larry Loomer, KI6LNB <laryloomer@yahoo.com>
Race Director: Rachel Lunt <teamlunt07@gmail.com>
https://runsignup.com/Race/CA/CastroValley/LakeChabotTrailRun
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