Not 100% sure on this, but I did a bunch of Wikipedia browsing while laid up with a bum leg tonight and couldn't find anyone with a non-conference win streak longer than our's. It wasn't particularly close either.
The Gophers last lost a non-conference game to #2 TCU in September 2015 and are currently on a 15 Game win streak. Acknowledging that it hasn't exactly been a murderer's row, that still didn't stop the rest of the country from losing a bowl or a buy game during that time period. Just something kind of neat to get us through the off-season. Let me know if you see any corrections needed.
The years don't count the exact date of bowl games, just the season.
The Gophers:
2018
W - vs Georgia Tech
W - Miami (OH)
W - Fresno State
W - New Mexico State
2017
W - Middle Tennessee State
W - @ Oregon State
W - Buffalo
2016
W - vs Washington State
W - Colorado State
W - Indiana State
W - Oregon State
2015
W - vs Central Michigan
W - Ohio
W - Kent State
W - @ Colorado State
L - TCU
The Rest of the Country (kind of):
Iowa - 2016 Florida
Nebraska – 2018 Troy
Wisconsin – 2018 BYU
Illinois – 2018 South Florida
Northwestern – 2018 Notre Dame
Purdue – 2018 Auburn
Indiana – 2016 Utah
Michigan – 2018 Florida
Michigan State – 2018 Oregon
Ohio State – 2017 Oklahoma
Penn State – 2018 Kentucky
Maryland – 2018 Temple
Iowa State – 2018 Washington State
Kansas – 2018 Nicholls State
Kansas State – 2018 Mississippi State
Oklahoma – 2018 Alabama
Oklahoma State – 2016 Central Michigan
Texas – 2018 Maryland
Texas Tech – 2018 Ole Miss
Baylor – 2018 Duke
TCU – 2018 Ohio State
West Virginia – 2018 Syracuse
Syracuse – 2017 LSU
Boston College – 2018 Purdue
Pittsburgh – 2018 Stanford
Virginia – 2018 Indiana
Virginia Tech – 2018 Cincinnati
North Carolina – 2018 East Carolina
North Carolina State – 2018 Texas A & M
Duke – 2017 Army
Clemson – 2017 Alabama
Miami – 2018 Wisconsin
Florida State – 2018 Florida
Louisville – 2018 Kentucky
Georgia Tech – 2018 Minnesota
Notre Dame – 2017 Stanford
Washington State – 2017 Michigan State
Washington – 2018 Ohio State
Oregon – 2017 Boise State
Oregon State – 2018 Nevada
Stanford – 2018 Notre Dame
California – 2018 TCU
USC – 2018 Notre Dame
UCLA – 2018 Fresno State
Arizona – 2018 Houston
Arizona State – 2018 Fresno State
Colorado – 2016 Oklahoma State
Utah – 2018 Northwestern
Florida – 2017 Florida State
Georgia – 2018 Texas
South Carolina – 2018 Virginia
Alabama – 2018 Clemson
Auburn – 2017 UCF
Ole Miss – 2017 California
Mississippi State – 2018 Iowa
Tennessee – 2018 West Virginia
Vanderbilt – 2018 Baylor
Kentucky – 2017 Northwestern
LSU – 2017 Notre Dame
Arkansas – 2018 North Texas
Missouri – 2018 Oklahoma State
Texas A&M – 2018 Clemson
Houston – 2018 Army
UCF – 2018 LSU
South Florida – 2018 Marshall
Tulane – 2018 Ohio State
Navy – 2018 Army
Temple – 2018 Duke
Cincinnati – 2017 Michigan
UCONN – 2018 Syracuse
East Carolina – 2018 NC State
Memphis – 2018 Wake Forest
SMU – 2018 Michigan
Tulsa – 2018 Arkansas
Buffalo – 2018 Troy
Kent State – 2018 Ole Miss
Miami OH – 2018 Army
Ohio – 2018 Cincinnati
Toledo – 2018 FIU
Akron – 2018 South Carolina
Bowling Green – 2018 Georgia Tech
Eastern Michigan – 2018 Georgia Southern
Western Michigan – 2018 BYU
Central Michigan – 2018 Michigan State
Northern Illinois – 2018 UAB
San Diego State – 2018 Ohio
Fresno State – 2018 Minnesota
Air Force – 2018 Army
Boise State – 2018 Oklahoma State
Wyoming – 2018 Missouri
Colorado State – 2018 Illinois State
New Mexico – 2018 Liberty
San Jose State – 2018 Oregon
Utah State – 2018 Michigan State
UNLV – 2018 Arkansas State
Hawaii – 2018 Louisiana Tech
Nevada – 2018 Toledo
The Gophers last lost a non-conference game to #2 TCU in September 2015 and are currently on a 15 Game win streak. Acknowledging that it hasn't exactly been a murderer's row, that still didn't stop the rest of the country from losing a bowl or a buy game during that time period. Just something kind of neat to get us through the off-season. Let me know if you see any corrections needed.
The years don't count the exact date of bowl games, just the season.
The Gophers:
2018
W - vs Georgia Tech
W - Miami (OH)
W - Fresno State
W - New Mexico State
2017
W - Middle Tennessee State
W - @ Oregon State
W - Buffalo
2016
W - vs Washington State
W - Colorado State
W - Indiana State
W - Oregon State
2015
W - vs Central Michigan
W - Ohio
W - Kent State
W - @ Colorado State
L - TCU
The Rest of the Country (kind of):
Iowa - 2016 Florida
Nebraska – 2018 Troy
Wisconsin – 2018 BYU
Illinois – 2018 South Florida
Northwestern – 2018 Notre Dame
Purdue – 2018 Auburn
Indiana – 2016 Utah
Michigan – 2018 Florida
Michigan State – 2018 Oregon
Ohio State – 2017 Oklahoma
Penn State – 2018 Kentucky
Maryland – 2018 Temple
Iowa State – 2018 Washington State
Kansas – 2018 Nicholls State
Kansas State – 2018 Mississippi State
Oklahoma – 2018 Alabama
Oklahoma State – 2016 Central Michigan
Texas – 2018 Maryland
Texas Tech – 2018 Ole Miss
Baylor – 2018 Duke
TCU – 2018 Ohio State
West Virginia – 2018 Syracuse
Syracuse – 2017 LSU
Boston College – 2018 Purdue
Pittsburgh – 2018 Stanford
Virginia – 2018 Indiana
Virginia Tech – 2018 Cincinnati
North Carolina – 2018 East Carolina
North Carolina State – 2018 Texas A & M
Duke – 2017 Army
Clemson – 2017 Alabama
Miami – 2018 Wisconsin
Florida State – 2018 Florida
Louisville – 2018 Kentucky
Georgia Tech – 2018 Minnesota
Notre Dame – 2017 Stanford
Washington State – 2017 Michigan State
Washington – 2018 Ohio State
Oregon – 2017 Boise State
Oregon State – 2018 Nevada
Stanford – 2018 Notre Dame
California – 2018 TCU
USC – 2018 Notre Dame
UCLA – 2018 Fresno State
Arizona – 2018 Houston
Arizona State – 2018 Fresno State
Colorado – 2016 Oklahoma State
Utah – 2018 Northwestern
Florida – 2017 Florida State
Georgia – 2018 Texas
South Carolina – 2018 Virginia
Alabama – 2018 Clemson
Auburn – 2017 UCF
Ole Miss – 2017 California
Mississippi State – 2018 Iowa
Tennessee – 2018 West Virginia
Vanderbilt – 2018 Baylor
Kentucky – 2017 Northwestern
LSU – 2017 Notre Dame
Arkansas – 2018 North Texas
Missouri – 2018 Oklahoma State
Texas A&M – 2018 Clemson
Houston – 2018 Army
UCF – 2018 LSU
South Florida – 2018 Marshall
Tulane – 2018 Ohio State
Navy – 2018 Army
Temple – 2018 Duke
Cincinnati – 2017 Michigan
UCONN – 2018 Syracuse
East Carolina – 2018 NC State
Memphis – 2018 Wake Forest
SMU – 2018 Michigan
Tulsa – 2018 Arkansas
Buffalo – 2018 Troy
Kent State – 2018 Ole Miss
Miami OH – 2018 Army
Ohio – 2018 Cincinnati
Toledo – 2018 FIU
Akron – 2018 South Carolina
Bowling Green – 2018 Georgia Tech
Eastern Michigan – 2018 Georgia Southern
Western Michigan – 2018 BYU
Central Michigan – 2018 Michigan State
Northern Illinois – 2018 UAB
San Diego State – 2018 Ohio
Fresno State – 2018 Minnesota
Air Force – 2018 Army
Boise State – 2018 Oklahoma State
Wyoming – 2018 Missouri
Colorado State – 2018 Illinois State
New Mexico – 2018 Liberty
San Jose State – 2018 Oregon
Utah State – 2018 Michigan State
UNLV – 2018 Arkansas State
Hawaii – 2018 Louisiana Tech
Nevada – 2018 Toledo