Two brothers, Paul and Elliot, embark on one last road trip together to Mammoth, California.
Unfortunately the movie Mammoth is not yet available on HBO Max.
| Camera | Caleb Heller | Director of Photography |
| Directing | Ariel Heller | Director |
| Writing | Ariel Heller | Writer |
| Writing | Celia Rettenmaier | Writer |
| Production | David Breschel | Producer |
| Production | Carrie Finklea | Producer |
| Production | Alexandra Canosa | Associate Producer |
| Production | Shelby Malone | Associate Producer |
| Sound | René G. Boscio | Music |
| Editing | Zach Siegel | Editor |
| Art | Chrissie De Guzman | Production Design |
| Art | Lisa Mayo | Set Decoration |
| Costume & Make-Up | Beryl Brachman | Costume Design |
| Costume & Make-Up | Yeritza Bonilla | Makeup Artist |
| Production | Lindsay Eberts | Production Manager |
| Production | Amalia Stark | Production Manager |
| Directing | Linnéa Joelsson | Second Assistant Director |
| Directing | Sharon S. Park | Second Assistant Director |
| Directing | Celia Rettenmaier | Second Assistant Director |
| Directing | Kyle Smithers | Assistant Director |
| Directing | Rayka Zehtabchi | Assistant Director |
| Art | Tereza Hirsch | Set Dresser |
| Sound | Chris Aldi | Boom Operator |
| Sound | Alfonso Cano | Boom Operator |
| Sound | Alfonso Cano | Sound Mixer |
| Sound | Carol Gao | Sound Mixer |
| Sound | Chris Morocco | Supervising Sound Editor |
| Sound | Izumi Rosas | Sound Designer |
| Sound | Izumi Rosas | Sound Mixer |
| Sound | Derek Sepe | Sound Effects Editor |
| Sound | Daniel Zevallos | Boom Operator |
| Sound | Cedric Zhang | Boom Operator |
| Lighting | Kristen Correll | Gaffer |
| Lighting | Marques Green | Best Boy Electric |
| Camera | Harry Heng | Assistant Camera |
| Lighting | Yoni Klein | Gaffer |
| Camera | William Laney | Best Boy Grip |
| Camera | Milo Saarinen | Grip |
| Camera | Nobuyoshi Sakurai | Assistant Camera |
| Camera | Daniel Santoyo | Grip |
| Camera | José Andrés Solórzano Becerra | Key Grip |
| Production | Oona Wuolijoki | Extras Casting |
| Costume & Make-Up | Holly Holcomb | Costumer |
| Editing | Roy Arwas | Assistant Editor |
| Editing | Nathaniel Ray | Assistant Editor |
| Sound | Lauren Johnson | Scoring Mixer |
| Production | Justin Choy | Production Assistant |
| Production | Elan Gallo | Production Assistant |
| Production | Anthony Giacomelli | Production Assistant |
| Production | Jeffrey Gowdy | Production Assistant |
| Directing | Sydney Hoffner | Script Supervisor |
| Production | Vivien Huerta-Guimont | Production Assistant |
| Production | Adam Makary | Location Manager |
| Production | Olivia Shapiro | Production Coordinator |
| Production | Ting Song | Production Assistant |
| Directing | Christy Teichmann | Script Supervisor |
