Quarter Midget Career Stats:
21 time National A-Main Qualifier
90 First Place finishes
18 Track records
36 Track Speed records
*2002 National Quarter Midget Champion
*1999, 2000, 2001, 2002 Quarter Midget Region 6 Champion (Texas, Oklahoma & Kansas), San Antonio, TX Quarter Midget Track Championship, Austin, TX Quarter Midget Track Championship
 
Legends Series/Semi Pro:
*2004 - Legends career began at the age of 12. Brennan was grandfathered into this series because of his experience and success in the quarter midget series.
*2004- Attended Legends Driving School at Texas Motor Speedway and set a new track record. 
*2004 - Brennan ran a limited Legends Series Semi Pro schedule of 24 races.
14 First Place finishes
6 Second Place finishes
4 Third Place finishes
6 Fast time qualifiers (Fast time first National event in AL)
*2005 - First full year as a Legends Series Semi Pro Driver.
40 First Place finishes
17 second place finishes
3rd Place National Touring Series standings
2nd Place National Points standings
2nd Place Lowe's "Summer Shootout" Series standings (2 wins)

Legend Series/Pro:
*2006 - First full year as a Legends Series / Pro Driver
Joined Clay Hair Motorsports/Feb. to June, 2006
Joined Hurricane Racing Team / July, 2006
42 First Place finishes out of 61 races
Two First Place finishes at Orlando, FL 2006 Winter National Championships.
*2006 Texas State Champion
*2006 National Race of Champions, Champion
*2006 Humpy Wheeler 100 lap Champion
*2006 Seventh in National Points

Modified Series/Dirt:
*2006 - First season in the Modified Series/Dirt
Joined Russell Moore Racing Team/October, 2006
November 2006--First race-- Texas Grand's-- Finished Seventh---
Youngest driver to ever qualify for the Texas Grand's Race
March 2007 Texas World Dirt Track Championship first in heat race, finished 31st
Joined Victory Lane Motorsports/April, 2007

2008 Modified season
7 First Place Feature Events
Youngest driver to win a USMTS Pole
2nd Place Laps Lead (Texas USMTS)
6TH place Point Standings (Houston Motor Speedway)


Late Model Series/Asphalt:
*2009 - First Season in the Late Model Stock Cars and the UARA-STARS Series
Joined FatHead Racing Team March 2009
May 8, 2009 -- Collected First Asphalt Late Model Win at Tri-County Motor Speedway
2009 UARA-STARS Series 8th Place Points Finish
2009 UARA-STARS Series Rookie of the Year
2009 UARA-STARS Series Most Popular Driver(via fan vote)
 
Professional Accomplishments:
Throughout Brennan's career, the focus has been to find the best possible competition. By doing this he has developed skills to adapt to new tracks, their conditions, and to understand how to make changes to his car in order to be competitive. Brennan has raced in 19 different states on 57 different racetracks, thereby enhancing his ability to focus and win against top competitors.