Rotten Tomatoes
Suggestions will appear as you start typing. Submit search Movies Tv shows RT App News Showtimes

Run Fat Boy Run

Play trailer Poster for Run Fat Boy Run PG-13 2008 1h 40m Romance Comedy Play Trailer Watchlist
Watchlist Tomatometer Popcornmeter
46% Tomatometer 151 Reviews 64% Popcornmeter 100,000+ Ratings
Five years earlier, nervous bridegroom Dennis (Simon Pegg) leaves his pregnant girlfriend, Libby (Thandie Newton), at the altar. Now he realizes he made a big mistake and wants to win her back. Unfortunately, Libby is involved with a handsome, attentive and fit financier (Hank Azaria), who plans to run in a charity marathon. Out-of-shape Dennis enters the race -- hoping to impress Libby -- even though he only has three weeks to prepare.
Run Fat Boy Run

What to Know

Critics Consensus

Run, Fat Boy, Run features sporadic laughs, but is ultimately too formulaic and predictable.

Read Critics Reviews

Critics Reviews

View More
Anil Sinanan Time Out Oct 24, 2017
The film jogs along uncertain whether it is aiming to be an episode of Friends or a Farrelly brothers farce. Overrun with fart jokes, it is fitfully funny and hamstrung by a sentimental and implausible plot. Go to Full Review Alissa Wilkinson Paste Magazine Apr 12, 2016
Satisfyingly entertaining. Go to Full Review J. R. Jones Chicago Reader Dec 17, 2008
This feeble premise limits the movie to perfunctory gags about the hero's sloth and some canned underdog drama. Go to Full Review Mike Massie Gone With The Twins Nov 28, 2020
3/10
It comes as no surprise that the film is simply terrible. Go to Full Review Leigh Paatsch Herald Sun (Australia) Nov 17, 2020
1.5/5
A predictably puerile plod along a road we've all been down before. Runs out of puff well before the big race. Go to Full Review Debbie Lynn Elias Behind The Lens Nov 9, 2019
Meticulous, detailed, cohesive, comedic, charming, embraceable and entertaining. David Schwimmer has done Mom proud with this one. Go to Full Review Read all reviews

Audience Reviews

View More
Robert P @Superbad 4 hrs ago Run Fat Boy Run is a *3* star Movie! See more Tripti G @Tiripiri Jun 8, 2026 So a rewatch since I don't remember much as a kid, but also never really knew how star studded the line up was. See more Shane O @Shanes_DVD_Shack Mar 19, 2025 A good fun movie , I have watched it a bunch of times and still like it See more Mickey S @RT95763402 Oct 21, 2024 This movie is a gem. If you’re looking for a good time, a fun comedy with heart, this hits the spot. See more Jace E @thefilmguy Sep 17, 2024 I am a bit higher on this movie than the general public. Everything about it is charming and endearing to me. The premise is straightforward but pretty relatable. Simon Pegg acts his heart out, which makes for more than a few tender moments. It's full of clichés, but I can look past that. Run, Fatboy, Run is underrated and a movie that I would gladly recommend. See more Bahad j @RT27093708 Jul 18, 2024 The movie was a very exciting adventure from start to finish See more Read all reviews
Run Fat Boy Run

My Rating

Read More Read Less WRITE A REVIEW EDIT REVIEW POST RATING

Cast & Crew

View All

David Schwimmer

Director

Simon Pegg

Dennis

Thandiwe Newton

Libby

Hank Azaria

Whit

Dylan Moran

Gordon

Harish Patel

Mr. Goshdashtidar

More Like This

View All
Dan in Real Life 65% 69% Dan in Real Life Watchlist The Wedding Date 12% 67% The Wedding Date Watchlist The Accidental Husband 12% 36% The Accidental Husband Watchlist I Could Never Be Your Woman 69% 44% I Could Never Be Your Woman Watchlist My First Wedding 0% 25% My First Wedding Watchlist Discover more movies and TV shows. View More
View All

Run Fat Boy Run

View more photos

Movie Info

Synopsis Five years earlier, nervous bridegroom Dennis (Simon Pegg) leaves his pregnant girlfriend, Libby (Thandie Newton), at the altar. Now he realizes he made a big mistake and wants to win her back. Unfortunately, Libby is involved with a handsome, attentive and fit financier (Hank Azaria), who plans to run in a charity marathon. Out-of-shape Dennis enters the race -- hoping to impress Libby -- even though he only has three weeks to prepare.
Director
David Schwimmer
Producer
Robert Jones, Sarah Curtis
Screenwriter
Michael Ian Black, Simon Pegg
Distributor
Picturehouse
Production Co
Material, Entertainment Films, Beech Hill Films
Rating
PG-13 (Nudity|Language|Smoking|Some Rude and Sexual Humor)
Genre
Romance, Comedy
Original Language
English
Release Date (Theaters)
Mar 28, 2008, Wide
Release Date (Streaming)
Jul 2, 2010
Box Office (Gross USA)
$6.0M
Runtime
1h 40m
Sound Mix
Dolby SRD, DTS, SDDS
Aspect Ratio
Scope (2.35:1)
Join The Newsletter Join The Newsletter Cookie Settings