Finish Line

"Barry isn't going to hell. But like all runners must eventually, he's reached his finish line. His race is over."

- The Speed Force

"Finish Line" is the twenty-third and final episode of the third season of The Flash, and the sixty-ninth episode overall. It aired on May 23, 2017.

Synopsis
With nothing left to lose, Barry takes on Savitar in an epic conclusion to season three.

Trivia

 * Savitar mentions DeVoe as he recalls his memory in S.T.A.R. Labs. This is likely a reference to Clifford DeVoe, a villain known as the Thinker. This is the second time a reference on DeVoe was made. The first being in Abra Kadabra, by Abra Kadabra.
 * Cisco refers to Savitar as "Two-Face" after he was rescued by Gypsy. This is a tongue-in-cheek reference to the comics villain Harvey Dent, aka Two-Face, an antagonist of Batman.
 * A quote from Mark Twain appears on H.R.'s tombstone.
 * Iris tells a story of John Lennon regarding his youth at the funeral.
 * Cisco asks Wally to "reverse the polarity on the neutron flow", referencing a catchphrase of the Third Doctor in Doctor Who; "reverse the polarity of the neutron flow"
 * Hunter Zolomon's current form has been named as Black Flash by Savitar.
 * This episode airs on May 23, 2017, which coincidentally was also the date in which Savitar originally killed Iris on.
 * This is the season 3 finale of "The Flash".
 * Gypsy returns in this episode.
 * Jay Garrick is freed from the speed force.
 * The scene where Savitar holds Cisco while vibrating his hand and telling him that he will die "the same way twice" references the erased timeline in the Season 1 episode Out of Time in which he got killed by Eobard Thawne who was posing as Harrison Wells at the time in which he vibrates his hand and phase his hand through his chest. That timeline was erased thanks to Barry who travels back in time to prevent the city to be destroyed.