| NASCAR Xfinity Series closest finishes |
| Rank | Race | Margin (seconds) | Winner | 2nd Place | Track | Date |
| 1 | 2018 PowerShares QQQ 300 | 0.0004 | Tyler Reddick | Elliott Sadler | Daytona International Speedway | February 17, 2018 |
| 2 | 1996 Sears Auto Center 250 | 0.002 | Buckshot Jones | Mike McLaughlin | Milwaukee Mile | July 7, 1996 |
| 1999 Touchstone Energy 300 | Terry Labonte | Joe Nemechek | Talladega Superspeedway | April 24, 1999 |
| 2024 Andy's Frozen Custard 300 | Sam Mayer | Ryan Sieg | Texas Motor Speedway | April 13, 2024 |
| 5 | 2018 Coca-Cola Firecracker 250 | 0.005 | Kyle Larson | Elliott Sadler | Daytona International Speedway | July 6, 2018 |
| 2023 Wawa 250 | Justin Allgaier | Sheldon Creed | Daytona International Speedway | August 25, 2023 |
| 7 | 2011 DRIVE4COPD 300 | 0.007 | Tony Stewart | Clint Bowyer | Daytona International Speedway | February 19, 2011 |
| 8 | 1998 Jiffy Lube Miami 300 | 0.010 | Jeff Burton | Jimmy Spencer | Homestead-Miami Speedway | November 15, 1998 |
| 9 | 2010 NAPA Auto Parts 200 | 0.012 | Boris Said | Max Papis | Circuit Gilles Villeneuve | August 29, 2010 |
| 2017 Irish Hills 250 | Denny Hamlin | William Byron | Michigan International Speedway | June 17, 2017 |
| 11 | 2014 DRIVE4COPD 300 | 0.013 | Regan Smith | Brad Keselowski | Daytona International Speedway | February 22, 2014 |
| 12 | 2022 Sparks 300 | 0.015 | A. J. Allmendinger | Sam Mayer | Talladega Superspeedway | October 1, 2022 |
| 13 | 2011 Food City 250 | 0.019 | Kyle Busch | Joey Logano | Bristol Motor Speedway | August 26, 2011 |
| 14 | 2014 Subway Firecracker 250 | 0.020 | Kasey Kahne | Regan Smith | Daytona International Speedway | July 4, 2014 |
| 15 | 2013 Jeff Foxworthy's Grit Chips 300 | 0.023 | Kyle Busch | Kyle Larson | Bristol Motor Speedway | March 16, 2013 |
| 2021 Wawa 250 | Justin Haley | A. J. Allmendinger | Daytona International Speedway | August 28, 2021 |
| 17 | 2005 United Way 300 | 0.030 | Kasey Kahne | Greg Biffle | Kansas Speedway | October 8, 2005 |
| 2009 Aaron's 312 | David Ragan | Ryan Newman | Talladega Superspeedway | April 25, 2009 |
| 2021 Desert Diamond Casino West Valley 200 | Daniel Hemric | Austin Cindric | Phoenix Raceway | November 6, 2021 |
| 20 | 2023 Dead On Tools 250 | 0.032 | Justin Allgaier | Sheldon Creed | Martinsville Speedway | October 28, 2023 |
| 21 | 2012 Aaron's 312 | 0.034 | Joey Logano | Kyle Busch | Talladega Superspeedway | May 5, 2012 |
| 22 | 2002 Kroger 300 | 0.036 | Todd Bodine | Greg Biffle | Kentucky Speedway | June 16, 2002 |
| 23 | 2011 Subway Jalapeño 250 | 0.040 | Joey Logano | Jason Leffler | Daytona International Speedway | July 1, 2011 |
| 24 | 2004 Mr. Goodcents 300 | 0.041 | Joe Nemechek | Greg Biffle | Kansas Speedway | October 9, 2004 |
| 25 | 2016 Powershares QQQ 300 | 0.043 | Chase Elliott | Joey Logano | Daytona International Speedway | February 20, 2016 |
| 26 | 2004 O'Reilly 300 | 0.044 | Matt Kenseth | Kyle Busch | Texas Motor Speedway | April 3, 2004 |
| 27 | 2025 GOVX 200 | 0.045 | Aric Almirola | Alex Bowman | Phoenix Raceway | March 8, 2025 |
| 28 | 1997 Winston Motorsports 300 | 0.048 | Randy LaJoie | Dale Shaw | South Boston Speedway | June 13, 1997 |
| 29 | 2010 Stater Brothers 300 | 0.051 | Kyle Busch | Greg Biffle | Auto Club Speedway | February 20, 2010 |
| 30 | 2007 Aaron's 312 | 0.052 | Bobby Labonte | Tony Stewart | Talladega Superspeedway | April 28, 2007 |
| 31 | 2012 Subway Jalapeño 250 | 0.054 | Kurt Busch | Ricky Stenhouse Jr. | Daytona International Speedway | July 6, 2012 |
| 2017 U.S. Cellular 250 | Ryan Preece | Kyle Benjamin | Iowa Speedway | July 29, 2017 |
| 33 | 2001 Carquest Auto Parts 300 | 0.055 | Jeff Green | Matt Kenseth | Charlotte Motor Speedway | May 26, 2001 |
| 34 | 1995 Humminbird Fishfinder 500K | 0.060 | Chad Little | Jimmy Spencer | Talladega Superspeedway | July 22, 1995 |
| 35 | 2012 Virginia 529 College Savings 250 | 0.062 | Kurt Busch | Denny Hamlin | Richmond Raceway | April 27, 2012 |
| 36 | 2021 Dead On Tools 250 | 0.064 | Noah Gragson | Austin Cindric | Martinsville Speedway | October 30, 2021 |
| 37 | 1998 Diamond Hill Plywood 200 | 0.066 | Bobby Labonte | Jeff Burton | Darlington Raceway | March 21, 1998 |
| 2011 U.S. Cellular 250 | Ricky Stenhouse Jr. | Carl Edwards | Iowa Speedway | August 6, 2011 |
| 39 | 2009 Camping World 300 | 0.068 | Tony Stewart | Carl Edwards | Daytona International Speedway | February 14, 2009 |
| 40 | 2020 Contender Boats 250 | 0.072 | Chase Briscoe | Brandon Jones | Homestead–Miami Speedway | June 14, 2020 |
| 41 | 1994 Fram Filter 500k | 0.080 | Ken Schrader | Terry Labonte | Talladega Superspeedway | July 23, 1994 |
| 42 | 2021 Food City 300 | 0.082 | A. J. Allmendinger | Austin Cindric | Bristol Motor Speedway | September 17, 2021 |
| 43 | 2007 Yellow Transportation 300 | 0.085 | Kyle Busch | Matt Kenseth | Kansas Speedway | September 29, 2007 |
| 2021 Contender Boats 250 | Myatt Snider | Tyler Reddick | Homestead-Miami Speedway | February 27, 2021 |
| 2023 RAPTOR King of Tough 250 | Austin Hill | Daniel Hemric | Atlanta Motor Speedway | March 18, 2023 |
| 46 | 2006 Aaron's 312 | 0.086 | Martin Truex Jr. | Kevin Harvick | Talladega Superspeedway | April 29, 2006 |
| 2020 Toyota 200 | Chase Briscoe | Kyle Busch | Darlington Raceway | May 21, 2020 |
| 48 | 2015 Alert Today Florida 300 | 0.089 | Ryan Reed | Chris Buescher | Daytona International Speedway | February 21, 2015 |
| 49 | 2009 Kroger On Track for the Cure 250 | 0.090 | Brad Keselowski | Kyle Busch | Memphis Motorsports Park | October 24, 2009 |
| 50 | 1998 GM Goodwrench Service Plus 200 | 0.092 | Matt Kenseth | Tony Stewart | Rockingham Speedway | February 21, 1998 |
| 2018 Lilly Diabetes 250 | Justin Allgaier | Tyler Reddick | Indianapolis Motor Speedway | September 10, 2018 |
| 52 | 2010 Subway Jalapeño 250 | 0.094 | Dale Earnhardt Jr. | Joey Logano | Daytona International Speedway | July 2, 2010 |
| 53 | 2008 Hefty Odor Block 200 | 0.096 | Carl Edwards | Denny Hamlin | Phoenix Raceway | November 8, 2008 |
| 54 | 1996 BellSouth/Opryland USA 320 | 0.100 | Bobby Labonte | David Green | Nashville Fairgrounds Speedway | March 17, 1996 |
| 1997 Birmingham Auto Dealers Easycare 500k | Mark Martin | Steve Park | Talladega Superspeedway | April 26, 1997 |
| 2004 Food City 250 | Dale Earnhardt Jr. | Matt Kenseth | Bristol Motor Speedway | August 27, 2004 |
| 57 | 2007 Sam's Town 300 | 0.101 | Jeff Burton | Kyle Busch | Las Vegas Motor Speedway | March 10, 2007 |
| 58 | 2007 Winn-Dixie 250 | 0.103 | Kyle Busch | Kevin Harvick | Daytona International Speedway | July 6, 2007 |
| 59 | 2021 Beef. It's What's for Dinner. 300 | 0.104 | Austin Cindric | Brett Moffitt | Daytona International Speedway | February 13, 2021 |
| 2025 Focused Health 250 | Nick Sanchez | Carson Kvapil | EchoPark Speedway | June 27, 2025 |
| 60 | 2000 Hardee's 250 | 0.105 | Jeff Green | Matt Kenseth | Richmond Raceway | May 5, 2000 |
| 61 | 1997 United States Cellular 200 | 0.106 | Mike McLaughlin | Steve Park | New Hampshire Motor Speedway | May 10, 1997 |
| 2024 RAPTOR King of Tough 250 | Austin Hill | Chandler Smith | Atlanta Motor Speedway | February 24, 2024 |
| 63 | 2017 Lilly Diabetes 250 | 0.108 | William Byron | Paul Menard | Indianapolis Motor Speedway | July 22, 2017 |
| 64 | 2019 Circle K Firecracker 250 | 0.109 | Ross Chastain | Justin Haley | Daytona International Speedway | July 5, 2019 |
| 65 | 2022 Alsco Uniforms 250 | 0.111 | Austin Hill | Josh Berry | Atlanta Motor Speedway | July 9, 2022 |
| 66 | 1996 Humminbird Fishfinder 500K | 0.112 | Greg Sacks | Joe Nemechek | Talladega Superspeedway | July 27, 1996 |
| 2010 TECH-NET Auto Service 300 | Kyle Busch | Brad Keselowski | Charlotte Motor Speedway | May 29, 2010 |
| 68 | 2023 Ag-Pro 300 | 0.113 | Jeb Burton | Sheldon Creed | Talladega Superspeedway | April 22, 2023 |
| 69 | 1998 Myrtle Beach 250 | 0.115 | Randy LaJoie | David Green | Myrtle Beach Speedway | July 11, 1998 |
| 70 | 2004 Winn-Dixie 250 | 0.116 | Mike Wallace | Greg Biffle | Daytona International Speedway | July 2, 2004 |
| 2019 NASCAR Racing Experience 300 | Michael Annett | Justin Allgaier | Daytona International Speedway | February 16, 2019 |
| 2022 ToyotaCare 250 | Ty Gibbs | John Hunter Nemechek | Richmond Raceway | April 2, 2022 |
| 73 | 2004 Sam's Town 300 | 0.119 | Kevin Harvick | Kasey Kahne | Las Vegas Motor Speedway | March 6, 2004 |
| 2004 Aaron's 312 | Matt Kenseth | Kyle Busch | Atlanta Motor Speedway | October 30, 2004 |
| 75 | 2014 Aaron's 312 | 0.124 | Elliott Sadler | Chris Buescher | Talladega Superspeedway | May 3, 2014 |
| 76 | 2001 Subway 300 | 0.125 | Mike McLaughlin | Jimmy Spencer | Talladega Superspeedway | April 21, 2001 |
| 2002 Carquest Auto Parts 300 | Jeff Green | Greg Biffle | Charlotte Motor Speedway | May 25, 2002 |
| 78 | 2017 Service King 300 | 0.127 | Kyle Larson | Joey Logano | Auto Club Speedway | March 25, 2017 |
| 2019 MoneyLion 300 | Tyler Reddick | Gray Gaulding | Talladega Superspeedway | April 27, 2019 |
| 80 | 2005 Aaron's 312 | 0.128 | Martin Truex Jr. | Jon Wood | Talladega Superspeedway | April 30, 2005 |
| 2007 O'Reilly 300 | Matt Kenseth | Denny Hamlin | Texas Motor Speedway | April 14, 2007 |
| 82 | 2015 Winn-Dixie 300 | 0.130 | Joey Logano | Brian Scott | Talladega Superspeedway | May 2, 2015 |
| 83 | 2005 Winn-Dixie 250 | 0.131 | Martin Truex Jr. | Kevin Harvick | Daytona International Speedway | July 1, 2005 |
| 2022 Ag-Pro 300 | Noah Gragson | Jeffrey Earnhardt | Talladega Superspeedway | April 23, 2022 |
| 85 | 2014 Food City 300 | 0.132 | Ryan Blaney | Kyle Busch | Bristol Motor Speedway | August 22, 2014 |
| 2019 Indiana 250 | Kyle Busch | Justin Allgaier | Indianapolis Motor Speedway | September 7, 2019 |
| 87 | 2008 Winn-Dixie 250 | 0.133 | Denny Hamlin | Kyle Busch | Daytona International Speedway | July 4, 2008 |
| 88 | 2004 Hershey's Kisses 300 | 0.135 | Dale Earnhardt Jr. | Johnny Sauter | Daytona International Speedway | February 14, 2004 |
| 89 | 2005 Ford 300 | 0.137 | Ryan Newman | Greg Biffle | Homestead-Miami Speedway | November 19, 2005 |
| 90 | 1997 Food City 250 | 0.139 | Jimmy Spencer | Steve Park | Bristol Motor Speedway | August 22, 1997 |
| 91 | 2004 Goulds Pumps/ITT Industries 200 | 0.140 | Martin Truex Jr. | Bobby Hamilton Jr. | Nazareth Speedway | May 23, 2004 |
| 92 | 2014 DAV 200 | 0.141 | Brad Keselowski | Kyle Busch | Phoenix Raceway | November 8, 2014 |
| 2024 Ag-Pro 300 | Jesse Love | Riley Herbst | Talladega Superspeedway | April 20, 2024 |
| 94 | 2011 O'Reilly Auto Parts Challenge | 0.142 | Trevor Bayne | Denny Hamlin | Texas Motor Speedway | November 5, 2011 |
| 2017 Sparks Energy 300 | Aric Almirola | Elliott Sadler | Talladega Superspeedway | May 6, 2017 |
| 2023 Pacific Office Automation 147 | Cole Custer | Justin Allgaier | Portland International Raceway | June 3, 2023 |
| 97 | 2005 Funai 250 | 0.144 | Carl Edwards | Elliott Sadler | Richmond Raceway | May 13, 2005 |
| 98 | 2022 Food City 300 | 0.145 | Noah Gragson | Brandon Jones | Bristol Motor Speedway | September 16, 2022 |
| 99 | 1998 MBNA Gold 200 | 0.146 | Matt Kenseth | Kevin Grubb | Dover Motor Speedway | September 19, 1998 |
| 2024 Hy-Vee Perks 250 | Sam Mayer | Riley Herbst | Iowa Speedway | June 15, 2024 |
| 101 | 2002 Kroger 200 | 0.147 | Greg Biffle | Jason Keller | Indianapolis Raceway Park | August 3, 2002 |
| 2008 Kroger on Track for the Cure 250 | Carl Edwards | David Reutimann | Memphis Motorsports Park | October 25, 2008 |