OP 50 List of 2012 Entrants
| LastName | FirstName | MiddleName | Gender | Age | State |
| Alger | Thom | M | 43 | AZ | |
| Alt | James | Thomas | M | 55 | AZ |
| Alt | Stephen | James | M | 27 | AZ |
| Alt | Thomas | Henry | M | 29 | AZ |
| Anderson | Nate | M | 38 | AZ | |
| Anderson | John | Dietrich | M | 33 | CO |
| Anderson | Susan | G | F | 48 | AZ |
| Apple | Rob | M | 50 | TN | |
| Arter | Julie | F | 51 | AZ | |
| Ashbaugh | Stuart | M | 47 | AZ | |
| Averett | Christian | M | 38 | AZ | |
| Avery | Christopher | E | M | 48 | AZ |
| Bach | Gerald | D | M | 63 | AZ |
| Bane | Christie | F | 35 | AZ | |
| Bellmann | Craig | M | 50 | AZ | |
| Bennett | Bil | M | 40 | AZ | |
| Bindschadler | Brian | M | 47 | AZ | |
| Blanchard | James | M | 62 | WI | |
| Blum | Brett | Charlie | M | 24 | AZ |
| Bowen | Jeffrey | W. | M | 49 | AZ |
| Boyer | John | M | 29 | AZ | |
| Brown | Steve | Wayne | M | 46 | AZ |
| Brown | Kyle | Burton | M | 29 | AZ |
| Burtner | Marcus | M | 39 | AZ | |
| Cantrell | Art | M | 41 | AZ | |
| Chagaris | Tonja | Marie | F | 39 | AZ |
| Chamberlin | Zach | M | 36 | AZ | |
| Chapman | Alan | Daniel | M | 28 | AZ |
| Chapman | Eric | M | 26 | AZ | |
| Chase | Myles | Brigham | M | 26 | NH |
| Coates | Wayne | M | 64 | AZ | |
| Collette | Sandi | F | 51 | AZ | |
| Coy-Cirillo | Deborah | F | 53 | AZ | |
| Crawford | Cat | F | 41 | AZ | |
| Creer | Joe | T | M | 35 | AZ |
| Dasher | Sarah | F | 30 | AZ | |
| DeHesse | Margaret | Mary | F | 55 | AZ |
| Dodson | Amy | F | 49 | AZ | |
| Dorko | Jeffrey | M | 58 | PA | |
| Drelick | Julius | M | 45 | AZ | |
| Early | John | Paul | M | 32 | AZ |
| Erickson | Raoul | M | 43 | AZ | |
| Fagg | Harry | M | 52 | AZ | |
| Fall | Chris | M | 49 | AZ | |
| Feldman | Ian | M | 40 | AZ | |
| Figueroa | Wendy | F | 40 | CO | |
| Fitzgerald | Scott | M | 41 | AZ | |
| Foote | Geoffrey | M | 43 | AZ | |
| Foote | Gregory | M | 48 | CA | |
| Fornara | Lisa | F | 46 | AZ | |
| Frazier | Andrew | Boyd | M | 29 | AZ |
| Gabalski | Dan | M | 40 | AZ | |
| Gaber | Steve | M | 60 | AZ | |
| Galope | Joe | M | 43 | AZ | |
| Ganger | Rob | M | 45 | CO | |
| Garcia | Kelley | F | 46 | NM | |
| Gazzaniga | Anne | F | 44 | AZ | |
| Geist | Greg | M | 32 | AZ | |
| Gerchberg | Terence | J. | M | 40 | NY |
| Gifford | Adam | M | 37 | AZ | |
| Gillespie | Andrew | M | 46 | AZ | |
| Goforth | Mark | M | 51 | AZ | |
| Gohlke | Angela | F | 37 | AZ | |
| Grabau | Matthew | M | 31 | AZ | |
| Grady | Greg | M | 32 | AZ | |
| Greco | Ken | M | 44 | AZ | |
| Grossman | Steven | M | 51 | NM | |
| Gungle | Bruce | M | 53 | AZ | |
| Gutierrez | Ron | M | 44 | CA | |
| Hall | Christy | F | 39 | AZ | |
| Hansen | Dean | M | 56 | AZ | |
| Heard | Andrew | M | 45 | AZ | |
| Heller | Edwin | M | 49 | NM | |
| Henry | Christopher | Sean | M | 35 | CO |
| Herrera | James | O | M | 43 | CO |
| Hintzman | Matthew | M | 28 | AZ | |
| Holmes | Jim | M | 43 | AZ | |
| Hopkins | Maren | P | F | 30 | AZ |
| Hove | Cory | glen | M | 49 | AZ |
| Howard | Annette | Marie | F | 51 | AZ |
| Hughes | Steve | M | 57 | AZ | |
| Irlmeier | Matthew | M | 37 | AZ | |
| Jackson | Robert | Paul | M | 29 | AZ |
| Jackson | Jason | Christopher | M | 34 | AZ |
| Jacobsen | Erik | M | 35 | AZ | |
| James | Mike | M | 40 | MT | |
| Janezic | Brian | M | 25 | AZ | |
| Johnson | Cory | M | 32 | UT | |
| Jones | Justin | W. | M | 32 | AZ |
| Jones | Brian | M | 42 | AZ | |
| Joseph | Gene | M | 59 | AZ | |
| Jourdon | Jerome | Xavier | M | 38 | AZ |
| Juskiewicz | Nicholas | M | 51 | NM | |
| Justice | Holly | F | 34 | AZ | |
| Kablack | Alison | F | 38 | AZ | |
| Kapiloff | Betsy | F | 52 | NM | |
| Ketchell | Bob | M | 56 | NY | |
| Ketchell | Jennifer | F | 31 | NY | |
| Ketchell | Robby | M | 29 | NH | |
| Korosec | Adrian | M | 41 | AZ | |
| Krall | George | M | 55 | AZ | |
| Krebs | Andy | M | 37 | AZ | |
| Labban | Diane | F | 43 | AZ | |
| Larkindale | Jane | F | 36 | AZ | |
| Lauters | Nick | E | M | 29 | CO |
| Loesche | Kathi | F | 54 | AZ | |
| Maat | Bill | M | 56 | MI | |
| Maddieson | Ian | M | 69 | NM | |
| Marcus | Jackie | F | 62 | AZ | |
| Mastrangel-B | Danielle | F | 33 | AZ | |
| McCarty | Angie | F | 39 | AZ | |
| McCoy | Ruth | F | 35 | CA | |
| McKenna | Shawna | F | 47 | AZ | |
| McKinley | Brian | M | 25 | AZ | |
| McLean | John | M | 55 | AZ | |
| Melchiors | Mike | M | 51 | AZ | |
| Miller | Holly | F | 37 | AZ | |
| Miller | Michelle | F | 50 | AZ | |
| Mollenhour | John | M | 55 | GA | |
| Munoz | Mike | M | 31 | TX | |
| O'Bryant | Collin | M | 26 | AZ | |
| Ochoa | Stephen | M | 52 | AZ | |
| Oliver | Pamela | Joyce | F | 53 | CO |
| Oljaca | Miroslav | M | 49 | AZ | |
| Orkney | Brittany | Tremaine | F | 26 | AZ |
| Parks | Chrissy | F | 34 | AZ | |
| Peschka | Justin | B | M | 37 | AZ |
| Peterson | Derek | M | 50 | ND | |
| Petta | Alveratta | Mary | F | 53 | AZ |
| Phillips | Scout | F | 33 | AZ | |
| Piehl | Kimberly | F | 29 | AZ | |
| Pina | Ronald | M | 53 | AZ | |
| Poe | Brad | M | 56 | AZ | |
| Potter | Krystle | Violet | F | 25 | AZ |
| Ramirez | David | Hector | M | 55 | AZ |
| Ramsey | Dale | M | 48 | AZ | |
| Rasor | Amy | F | 33 | AZ | |
| Rathbun | Alisa | F | 44 | AZ | |
| Recca | Steve | M | 50 | CO | |
| Reed | Ryan | M | 45 | AZ | |
| Reimondo | Evan | M | 26 | AZ | |
| Reitz | Rachel | F | 30 | AZ | |
| Renquist | Benjamin | M | 33 | AZ | |
| Riddick | Jerry | M | 60 | AZ | |
| Rinehart | Bob | M | 58 | AZ | |
| Rizza | Joseph | gene | M | 64 | AZ |
| Roberts | Frederic | M | 51 | AZ | |
| Roig | Jonathan | M | 36 | AZ | |
| Roush | Rebecca | F | 37 | AZ | |
| Roynestad | Andrew | M | 30 | AZ | |
| Ruckle | Brett | M | 45 | AZ | |
| Sandbank | Daren | M | 53 | AZ | |
| Scheiwiller | Lindsay | F | 30 | AZ | |
| Schiess | Brigette | Alane | F | 44 | AZ |
| Scronic | Jason | M | 30 | AZ | |
| Sfekas | Andrew | M | 35 | PA | |
| Shipek | Catlow | M | 33 | AZ | |
| Silla | Lito | M | 49 | AZ | |
| Simmons | Matt | M | 36 | AZ | |
| Simon | David | M | 36 | AZ | |
| Sniffen | Adam | M | 30 | AZ | |
| Solheim | Karsten | Louis | M | 74 | AZ |
| Sooter | Alacia | F | 41 | AZ | |
| Stackhouse | Tim | M | 30 | AZ | |
| Stanton | Morgan | Julia | F | 29 | AZ |
| Stark | Brian | R | M | 40 | AZ |
| Stevens | Renee | F | 44 | AZ | |
| Still | Billy | M | 58 | AZ | |
| Swan | Reid | M | 35 | AZ | |
| Talattof | Kamran | M | 57 | AZ | |
| Telles | Louie | M | 51 | NM | |
| Teo | Daryl | M | 40 | AZ | |
| Thibodeau | Alyson | F | 30 | AZ | |
| Thompson | Jeff | M | 31 | AZ | |
| Toma | Marius | M | 34 | AZ | |
| Turman | Jeff | M | 35 | AZ | |
| Unrast | Dan | M | 47 | AZ | |
| Vaughan | Antoinette | F | 41 | AZ | |
| Verwolf | Scott | M | 42 | AZ | |
| Vollinger | Robin | F | 46 | AZ | |
| Walters | Fred | M | 60 | MI | |
| Wasowicz | Dawn | F | 47 | AZ | |
| Weeden | Eric | M | 41 | AZ | |
| Weston | Jeffrey | M | 47 | ME | |
| Williams | Alison | F | 28 | AZ | |
| Wrinkle | Allen | M | 47 | AZ |