John Mortensen
Listed Hometown: Weston, Connecticut
Born:
Died:
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| Year | Series | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles | Points | Standing |
| 1976 | IMSA | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 8 | 20 | |
| 1978 | CASC/SCCA | 5 | 1 | 0 | 0 | 0 | 0 | 0 | 7 | 0 | 23 | 13 |
| 1979 | CASC/SCCA | 10 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 60 | 7 | |
| 1980 | CASC/SCCA | 10 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 71 | 7 | |
| Total | 26 | 1 | 0 | 0 | 1 | 0 | 4 | 0 | 162 |
| Series | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| ASA | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 0 |
| CASC | 12 | 1 | 0 | 0 | 0 | 0 | 2 | 0 | |
| IMSA | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | |
| SCCA | 11 | 0 | 0 | 0 | 1 | 0 | 1 | 0 |
| Track Type | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| Road Course | 18 | 1 | 0 | 0 | 1 | 0 | 3 | 0 | |
| Street Course | 8 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
| Start # | Date | Track | Type | Series | Car # | Sponsor/Name | Chassis | Engine | Start | Finish | Laps | Status |
Points |
| 1 | 9/19/1976 | Road Atlanta 2 | RC | IMSA | X | X | March 76B | Ford | X | 5 | 25 | Finished | 8 |
| 2 | 4/6/1978 | Long Beach | SC | SCCA | 9 | Doug Shierson Racing | March 78B | Ford | 24 | 18 | 32 | Did not finish | |
| -- | 4/23/1978 | Westwood | RC | CASC | 9 | Doug Shierson Racing | March 78B | Ford | -- | -- | -- | Did not appear | |
| 3 | 6/11/1978 | Quebec City | SC | CASC | 9 | Doug Shierson Racing | March 78B | Ford | X | 10 | 76 | Flagged | 6 |
| 4 | 7/4/1978 | Lime Rock | RC | SCCA | 9 | Race Shop | March 78B | Ford | 12 | 13 | 63 | Flagged | 3 |
| 5 | 8/7/1978 | Hamilton | SC | CASC | 9 | Doug Shierson Racing | March 78B | Ford | X | 7 | 38 | Flagged | 9 |
| NC | 9/3/1978 | Trois-Rivieres | SC | CASC | 9 | Doug Shierson Racing | March 78B | Ford | 23 | 12 | 20 | Flagged | |
| 6 | 9/24/1978 | Montreal | RC | CASC | 9 | Doug Shierson Racing | March 78B | Ford | 13 | 11 | 34 | Flagged | 5 |
| 7 | 4/7/1979 | Long Beach | SC | SCCA | 9 | Stimola Racing | March 79B | Ford | X | 30 | X | Did not finish | |
| 8 | 5/6/1979 | Mexico City | RC | ASA | 9 | Stimola Racing | March 79B | Ford | X | 9 | X | X | 7 |
| 9 | 6/3/1979 | Westwood | RC | CASC | 9 | Stimola Racing | March 79B | Ford | X | 15 | X | Did not finish | 1 |
| 10 | 6/10/1979 | Quebec City | SC | CASC | 9 | Stimola Racing | March 79B | Ford | 11 | 5 | 78 | Flagged | 12 |
| 11 | 7/8/1979 | Halifax | RC | CASC | 9 | Stimola Racing | March 79B | Ford | X | 11 | X | X | 5 |
| 12 | 7/22/1979 | Elkhart Lake | RC | SCCA | 9 | Stimola Racing | March 79B | Ford | X | 21 | X | Did not finish | |
| 13 | 8/19/1979 | Mosport | RC | CASC | 9 | Stimola Racing | March 79B | Ford | X | 5 | 40 | Finished | 12 |
| 14 | 9/2/1979 | Trois-Rivieres | SC | CASC | 9 | Stimola Racing | March 79B | Ford | 15 | 7 | 41 | Flagged | 9 |
| 15 | 9/16/1979 | Bridgehampton | RC | SCCA | 9 | Stimola Racing | March 79B | Ford | X | 6 | X | X | 10 |
| 16 | 9/29/1979 | Montreal | RC | CASC | 9 | Stimola Racing | March 79B | Ford | 18 | 12 | 36 | Flagged | 4 |
| 17 | 3/29/1980 | Long Beach | SC | SCCA | 9 | Transcendental Meditation | March 80A | Ford | 8 | 22 | 23 | Broken wheel | |
| 18 | 5/25/1980 | Sears Point | RC | SCCA | 89 | Transcendental Meditation | March 80A | Ford | 6 | 5 | 40 | Finished | 12 |
| 19 | 6/1/1980 | Westwood | RC | CASC | 9 | Transcendental Meditation | March 80A | Ford | 8 | 7 | 55 | Flagged | 9 |
| 20 | 6/15/1980 | Brainerd | RC | SCCA | 9 | Transcendental Meditation | March 80A | Ford | 8 | 21 | 0 | Wrecked | |
| 21 | 7/5/1980 | Lime Rock | RC | SCCA | 89 | Transcendental Meditation | March 80A | Ford | 3 | 3 | 65 | Flagged | 19 |
| 22 | 7/19/1980 | Elkhart Lake | RC | SCCA | 89 | Transcendental Meditation | March 80A | Ford | X | 6 | 25 | Finished | 10 |
| 23 | 8/24/1980 | Trois-Rivieres | SC | CASC | 89 | Transcendental Meditation | March 80A | Ford | 6 | 13 | 32 | X | 3 |
| 24 | 9/14/1980 | Bridgehampton | RC | SCCA | 89 | Transcendental Meditation | March 80A | Ford | X | 9 | 35 | Finished | 7 |
| 25 | 9/27/1980 | Montreal | RC | CASC | 89 | Transcendental Meditation | March 80A | Ford | 7 | 7 | 37 | 1:04:30.52 | 9 |
| 26 | 10/26/1980 | Mexico City | RC | ASA | 89 | Doug Shierson Racing | March 80A | Ford | 9 | 14 | X | X | 2 |