Marathon

"Oliver died for more than this Earth's survival. Oliver laid down his life so the people he loved could live theirs. That includes you. Life's a marathon, not a sprint, Barry. Slow down and enjoy it."

—John Diggle to Barry Allen

"Marathon"
Information
Season 6 » Episode 10
Episode number	124 of 184
Original airdate	February 4, 2020
Written by	Sam Chalsen Lauren Barnett
Directed by	Stefan Pleszczynski
Chronology
Preceded by	"Crisis on Infinite Earths: Part Three"
Followed by	"Love Is A Battlefield"

"Marathon" is the tenth and midseason premiere episode of the sixth season of The Flash, and the one-hundred-twenty-fourth episode overall. It aired on February 4, 2020.

Synopsis

After The Citizen prints an explosive story, Iris's life is threatened. Refusing to hide from those that are attacking her, Iris sets out to expose a dangerous organization. Meanwhile, Barry must face the consequences of the Crisis and fulfill Oliver Queen's wish for him.[src]

Cast

Starring

• Grant Gustin as Barry Allen/The Flash
• Candice Patton as Iris West-Allen
• Danielle Panabaker as Dr. Caitlin Snow/Frost
• Carlos Valdes as Cisco Ramon
• Hartley Sawyer (credit only)
• Danielle Nicolet as Defense Attorney Cecile Horton
• Tom Cavanagh as Dr. Harrison Nash Wells and Dr. Harrison "Harry" Wells
• Jesse L. Martin as Captain Joe West

Special guest star

• David Ramsey as John Diggle

Guest starring

• Victoria Park as Kamilla Hwang
• Kayla Compton as Allegra Garcia and Maya (photo)
• Eric Nenninger as Joseph Carver
• Emmie Nagata as Dr. Kimiyo Hoshi/Dr. Light
• William MacDonald as Gene Huskk

Co-starring

• Tess Atkins as Natalie
• Eduard Witzke as Sterling Brooks
• Andrew J. Hampton as Maurice
• Gary Starkell as Riggs Wellington
• Emmett Lee Stang as Mystery Man
• Arran Henn as CatCo Reporter
• Sonia Beeksma as KPJT Reporter
• Jarryd Baine as Channel 52 News Reporter

Trivia

• This episode takes place before the events of "Fadeout".
• This episode introduced a new title card which contains a montage of different characters, similar to the one DC's Legends of Tomorrow debuted the same day.
• Recurring robber Sterling Brooks returns in the cold open of this episode.
  • However, unlike the past 2 seasons, he was defeated by The Flash instead of Elongated Man.
• Barry brought his equipment from the crime lab to John since he would not like Barry to speed him there.
  • This references the events in "Legends of Today", "Invasion!", "Crisis on Earth-X, Part 4", "Think Fast" and "Elseworlds, Part 1" where he vomits after Barry speeds him to different locations.
  • A later part of that scene also references this as John takes and swallows a ludicrous amount of motion sickness pills when Barry is about to speed him to Lian Yu.
• The box Barry thought it would contain Mirakuru is identical to the one appearing in "The Scientist".
• Cisco made a drawing of a new world map which shows important locations on Earth-Prime including:
  • United States: Star City, National City, Gotham City, Central City, Metropolis, Freeland, Happy Harbor.
  • Central America: San Monte, Santa Prisca
  • South America: Corto Maltese
  • Europe: Markovia, Kasnia
  • Asia: Qurac, Nanda Parbat, Tokyo
  • Africa: Zambesi, Tinasha, Gorilla City
  • Pacific Ocean: Kooey Kooey Island, Dinosaur Island, Lian Yu
  • The Arctic: Fortress of Solitude
• Cisco revealed his 52nd draft of a diagram labelled "Post Crisis Timeline" which recaps important events and heroes' debuts on Earth-Prime, including:
  • 2000: The murder of Nora Allen.
  • 2003: Kara's pod lands on Earth.
  • 2005: J'onn J'onzz becomes Hank Henshaw.
  • 2007: The Queen's Gambit sinks.
  • 2008: Slade Wilson is injected by Mirakuru.
  • 2009: Hong Kong is hit by the Alpha-Omega virus, Black Lightning retires from vigilantism.
  • 2011: Damien Darhk gains magic
  • 2012: The Hood debuts in Starling City.
  • 2013: The Undertaking occurs.
  • 2014: The particle accelerator explodes. Slade invades Starling City with his Mirakuru army. Barry wakes up from his coma and becomes The Flash. John Diggle, Jr. and Sara Diggle are born.
  • 2015: Bruce Wayne leaves Gotham City. Supergirl debuts in National City. Rip Hunter recruits the Legends.
  • 2016: Flash and Supergirl team up. Zoom and his army invade Central City, perhaps created by the singularity instead of Earth-2. The Ray debuts. The Dominators invade Central City.
  • 2017: Barry and Iris's wedding, perhaps interrupted by time traveling Nazi clones.
  • 2018: Batwoman debuts. Black Lightning returns. Thunder debuts. President Marsdin is exposed as an alien.
  • 2019: The Crisis begins.
  • 2020: The heroes return and defeat the Anti-Monitor.

• The diagram is the 52nd draft, referencing The New 52 in DC comics.
• Cisco also made a "Who's Who" binder of villains on Earth-Prime, including:
  • Abra Kadabra
  • Amunet Black
  • Arielle McAlpin
  • Block
  • Bug-Eyed Bandit
  • Dan Fisk
  • Dr. Derek Stricker
  • The Dominators
  • Emily Palizzi
  • Frankie Kane and her Magenta side
  • Girder
  • Grodd
  • Hotness
  • Kimiyo Hoshi
  • King Shark
  • Mist
  • Null
  • Pied Piper
  • Top
  • Trickster
  • Ultraviolet
  • Weather Witch
  • Weather Wizard

Gallery

Videos

The Flash 6x10 Promo "Marathon"

The Flash Season 6 Episode 10 A Clue On Oliver's Mask Scene The CW