Updates:
- March 12th: Added Lauren Brandon, Haley Chura, Paula Findlay, Mollie Hebda, Jenna Horner, Heather Jackson, Taylor Knibb, Pamella Oliveira, Daniela Ryf, Frankie Sanjana, Chelsea Sodaro, Brianna Troksa, Alexandra Watt (WPRO), Bart Aernouts, Alistair Brownlee, Andreas Dreitz, Arnaud Guilloux, Chris Hammer, Matt Hanson, Tripp Hipple, Eric Lagerstrom, James Lubinski, Brent McMahon, Kristian Roed, Matthew Russell, Lionel Sanders, Brennen Smith, Ted Treise, Rudy Von Berg, Jason West, Travis Wood (MPRO)
- March 7th: Added Mirinda Carfrae, Luisa Duarte, Jackie Hering, Danielle Lewis, Jocelyn McCauley, Skye Moench, Danielle Treise, Ai Ueda, Amy Vantassel, Britt Vocke (WPRO), Antoine Francoeur, Blake Kappler, Andy Krueger, Jackson Laundry, Sam Long, Steven McKenna, Loren Nelson, Steven Parker, Jason Pohl, Kevin Portmann, Tomasz Szala, Antonio Villardaga (MPRO)
Slots for 70.3 Worlds and Prize Money
70.3 California has 3m+3f Pro slot(s) for 70.3 Worlds. It has a total prize purse of 50.000 US$, paying 8 deep.
Male Race Participants
| Name | Nation |
| Bart Aernouts | BEL |
| Josh Amberger | AUS |
| Sam Appleton | AUS |
| Cody Beals | CAN |
| Marek Bialkowski | CAN |
| Kyle Boorsma | CAN |
| Harrison Brown | USA |
| Alistair Brownlee | GBR |
| Vinicius Canhedo | BRA |
| Nick Cosman | CAN |
| Andreas Dreitz | GER |
| Benjamin Ford | USA |
| Antoine Francoeur | CAN |
| Pedro Gomes | POR |
| Grant Grafentin | USA |
| Arnaud Guilloux (KQ) | FRA |
| Chris Hammer | USA |
| Matt Hanson | USA |
| Tripp Hipple | USA |
| David Hodge | AUS |
| Yu Hsiao | TWN |
| Ben Kanute | USA |
| Blake Kappler | AUS |
| Andy Krueger | USA |
| Eric Lagerstrom | USA |
| Jackson Laundry | CAN |
| Chris Leiferman | USA |
| Sam Long | USA |
| Andre Lopes | BRA |
| James Lubinski | USA |
| Steven McKenna | AUS |
| Brent McMahon | CAN |
| David McNamee | GBR |
| Clement Mignon | FRA |
| Klodian Mitri | USA |
| Loren Nelson | CAN |
| Tristan Olij | NED |
| Steven Parker | USA |
| Erik Peterson | USA |
| Jason Pohl | CAN |
| Kevin Portmann | FRA |
| Andy Potts | USA |
| Evan Price | USA |
| Duncan Reid | USA |
| Kristian Roed | NOR |
| Matthew Russell | USA |
| Paul Ruttmann | AUT |
| Lionel Sanders (KQ) | CAN |
| Eduardo Perez Sandi Garcia | MEX |
| James Scott-Farrington | GBR |
| Simon Shi | USA |
| Brennen Smith | CAN |
| Tomasz Szala | POL |
| Ted Treise | USA |
| Antonio Villardaga | MEX |
| Rudy Von Berg | USA |
| Michael Weiss | AUT |
| Jason West | USA |
| Tyson Wieland | USA |
| Travis Wood | USA |
Female Race Participants
| Name | Nation |
| Ruth Astle (KQ) | GBR |
| Lauren Babineau | CAN |
| Melanie Baumann | SUI |
| Lauren Brandon | USA |
| Mirinda Carfrae | AUS |
| Haley Chura | USA |
| Stefanie Cullingford | USA |
| Luisa Duarte | BRA |
| Paula Findlay | CAN |
| Ashleigh Gentle | AUS |
| Lara Gruden | USA |
| Mollie Hebda | USA |
| Jackie Hering | USA |
| Jenna Horner | USA |
| Tyler Hudacek | USA |
| Heather Jackson (KQ) | USA |
| Dominika Jamnicky | CAN |
| Tamara Jewett | CAN |
| Sarah Karpinski | USA |
| Taylor Knibb | USA |
| Holly Lawrence | GBR |
| Danielle Lewis | USA |
| Jocelyn McCauley | USA |
| Melanie McQuaid | CAN |
| Skye Moench (KQ) | USA |
| Angela Naeth | CAN |
| Pamella Oliveira | BRA |
| Irena Ossola | USA |
| Cecilia Perez | MEX |
| Daniela Ryf (KQ) | SUI |
| Frankie Sanjana | GBR |
| Chelsea Sodaro | USA |
| Danielle Treise | USA |
| Brianna Troksa | USA |
| Ai Ueda | JPN |
| Amy Vantassel | USA |
| Britt Vocke | USA |
| Alexandra Watt | USA |