"Marathon" effectively transitions Iris West-Allen from a supporting love interest back to her roots as a fearless investigative journalist.
“The theme of this episode seems to be "Slow Down"... it’s a fairly relevant message, especially for Barry, who’s suffering from survivor’s guilt.” Bob Canada's BlogWorld · 6 years ago REVIEW: The Flash – Season 6, Episode 10 "Marathon" [S6E10] Marathon
“"Marathon" deals with the fallout of Crisis while setting up the second half of the season... it manages to be more gripping and heartfelt than that boring, anticlimactic waste of a crossover was.” Geeks + Gamers · 6 years ago it manages to be more gripping and heartfelt
: The episode concludes with a striking cliffhanger: Iris is pulled into a mirror by silver arms, signaling the arrival of a new iteration of Mirror Master. Visuals & Tone While some viewers found the episode "boring" or
" Marathon ," the 10th episode of The Flash 's sixth season, serves as a grounded, emotional "breather" that pivots the series away from the cosmic scale of Crisis on Infinite Earths and toward a new, more intimate central conflict. Narrative Pivot & Post-Crisis Fallout
Critics noted the introduction of a "spiffy new title sequence" and praised the show's improved tone management. While some viewers found the episode "boring" or "basic" due to its slower pace compared to the crossover, others appreciated its "intriguing and emotional" focus on character development over spectacle. Community Perspectives
Reviewers and viewers highlighting the emotional weight and thematic depth of the episode: