Marathon

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 fulfil Oliver Queen's wish for him.

Main/Featured Characters

 * Team Flash
 * The Flash (Barry Allen)
 * Cisco Ramon
 * Frost (Caitlin Snow)
 * Nash Wells
 * John Diggle
 * John Diggle
 * John Diggle
 * John Diggle
 * John Diggle
 * John Diggle
 * John Diggle
 * John Diggle

Who's Who Binder

 * The following characters was pictured and named in the episode. Unless specified, they were not mentioned nor appear in the episode.

Other Characters

 * Diggle family
 * Diggle family
 * Diggle family
 * Diggle family
 * Diggle family
 * Diggle family
 * Diggle family
 * Diggle family
 * Diggle family
 * Diggle family
 * Diggle family
 * Diggle family
 * Diggle family
 * Diggle family
 * Diggle family

Organisations

 * S.T.A.R. Labs
 * R & D Division (first appearance) (mentioned)
 * Channel 52
 * CatCo Worldwide Media
 * R & D Division (first appearance) (mentioned)
 * Channel 52
 * CatCo Worldwide Media
 * Channel 52
 * CatCo Worldwide Media
 * Channel 52
 * CatCo Worldwide Media
 * CatCo Worldwide Media
 * CatCo Worldwide Media

Species

 * Humans
 * Meta-Humans

Objects

 * The Flash Suits
 * Frost Suit
 * Holographic Device
 * Guns
 * Harrison Nash Wells' Gauntlet
 * Harrison Nash Wells' Techno Fanny Pack
 * Guns
 * Harrison Nash Wells' Gauntlet
 * Harrison Nash Wells' Techno Fanny Pack
 * Guns
 * Harrison Nash Wells' Gauntlet
 * Harrison Nash Wells' Techno Fanny Pack
 * Harrison Nash Wells' Gauntlet
 * Harrison Nash Wells' Techno Fanny Pack
 * Harrison Nash Wells' Techno Fanny Pack
 * Harrison Nash Wells' Techno Fanny Pack

Locations

 * Earth-Prime
 * Earth
 * United States of America
 * Missouri
 * Central City
 * S.T.A.R. Labs
 * West-House (first appearance)
 * Lian Yu
 * West-House (first appearance)
 * Lian Yu
 * Lian Yu
 * Lian Yu
 * Lian Yu
 * Lian Yu
 * Lian Yu
 * Lian Yu
 * Lian Yu
 * Lian Yu
 * Lian Yu
 * Lian Yu
 * Lian Yu
 * Lian Yu

Trivia

 * Doctor Light made her first live action debut in this episode.
 * This episode reveals more of Nash's backstory.
 * On the board of the world map, we can see multiple location fron the DC Comics.:
 * Happy Harbor (the base of operations of the Justice League in the comics before the Watchtower)
 * Santa Prisca (a prison known for hosting Bane a Batman villain)