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The 2005 Toyota Atlantic Championship season was contested over 12 rounds. 14 different teams and 27 different drivers competed. In this one-make formula all drivers had to utilize Swift chassis and Toyota engines. This season also saw a C2-class running older Swift chassis and Toyota engines. In C2-class 12 different drivers competed, but non of them for the whole season.

Calendar

Race No	Track	State	Date	Laps	Distance	Time	Speed	Winner	Friday fastest	Saturday fastest	Leader(s)	Improvement	Fastest Race Lap
1	Long Beach	California	April 10, 2005	32	3.167=101.344 km	0'47:01.977	129.285 km/h	Katherine Legge	Antoine Bessette	Antoine Bessette	Antoine Bessette Katherine Legge	Charles Zwolsman	Antoine Bessette
2	Monterrey	Mexico	May 21, 2005	32	3.386=108.351 km	0'46:43.327	139.143 km/h	Charles Zwolsman	Tõnis Kasemets	Charles Zwolsman	Charles Zwolsman	Katherine Legge	Charles Zwolsman
3	Portland	Oregon	June 18, 2005	35	3.169=110.915 km	0'42:38.821	156.046 km/h	Tõnis Kasemets	Andreas Wirth		Andreas Wirth Tõnis Kasemets	Dan Selznick	Charles Zwolsman
4	Portland	Oregon	June 19, 2005	35	3.169=110.915 km	0'40:25.992	164.590 km/h	Tõnis Kasemets	Tõnis Kasemets		Tõnis Kasemets	Katherine Legge	Tõnis Kasemets
5	Cleveland	Ohio	June 25, 2005	32	3.3891858=108.4539456 km	0'39:28.711	164.830 km/h	Charles Zwolsman	Tõnis Kasemets		Charles Zwolsman	Tom Nastasi	Tõnis Kasemets
6	Cleveland	Ohio	June 26, 2005	32	3.3891858=108.4539456 km	0'36:46.826	176.921 km/h	Charles Zwolsman	Charles Zwolsman		Tõnis Kasemets Antoine Bessette Charles Zwolsman	Andreas Wirth	Charles Zwolsman
7	Toronto	Canada	July 10, 2005	35	2.825=98.875 km	0'42:58.149	138.064 km/h	Antoine Bessette	Charles Zwolsman	Charles Zwolsman	Charles Zwolsman David Martínez Antoine Bessette	Eric Jensen	Charles Zwolsman
8	Edmonton	Canada	July 17, 2005	32	3.1751489=101.6047648 km	0'39:53.701	152.808 km/h	Katherine Legge	Tõnis Kasemets	Charles Zwolsman	Charles Zwolsman Katherine Legge	Katherine Legge	Charles Zwolsman
9	San José	California	July 31, 2005	45	2.3302664=104.861988 km	0'48:56.342	128.562 km/h	Katherine Legge	Tõnis Kasemets	Charles Zwolsman	Tõnis Kasemets Charles Zwolsman Katherine Legge	Chris Souliotis	David Martínez
10	Denver	Colorado	August 14, 2005	35	2.6666101=93.3313535 km	0'40:29.856	132.277 km/h	Andreas Wirth	Alan Sciuto	Alan Sciuto	Andreas Wirth	Kyle Kelley	Tõnis Kasemets
11	Elkhart Lake	Wisconsin	August 21, 2005	17	6.5144464=110.7455888 km	0'35:12.283	188.746 km/h	Tõnis Kasemets	Tõnis Kasemets	Tõnis Kasemets	Tõnis Kasemets	Kyle Kelley	Tõnis Kasemets
12	Montréal	Canada	August 28, 2005	25	4.360=109.00 km	0'40:47.532	160.325 km/h	Antoine Bessette	David Martínez	David Martínez	Tõnis Kasemets Antoine Bessette	Antoine Bessette	David Martínez

bold indicate pole position

Race 1 Rocky Moran, Jr. led 3 laps but was not able to score an additional point due to driving in C2-class.

Final points standings

Driver

Main championship

For every race the points were awarded: 31 points to the winner, 27 for runner up, 25 for third place, 23 for fourth place, 21 for fifth place, 19 for sixth place, 17 for seventh place, 15 for eighth place, 13 for ninth place, 11 for tenth place, winding down to 1 point for 20th place. Lower placed drivers did not award points. Additional points were awarded to the fastest qualifier on Friday (1 point), the fastest qualifier on Saturday (1 point), any driver leading at least one lap in the race (1 point), the most improved driver from start to finish (1 point) and the driver setting the fastest lap (1 point). So the maximum points for one driver in one race is to earn 35 points. C2-class drivers were not able to score points in the main class.

Place	Name	Country	Team	Total Points
1	Charles Zwolsman	Netherlands	Condor Motorsports	306	26	34	28	15	32	34	17	30	27	25	19	19
2	Tõnis Kasemets	Estonia	Team Tonis	289	15	28	32	34	29	24	17	22	9	16	35	28
3	Antoine Bessette	Canada	Polestar Racing Group	267	31	23	21	21	13	28	32	23	9	23	10	33
	Katherine Legge	United Kingdom	Polestar Racing Group	267	32	22	13	26	10	21	19	33	32	9	27	23
5	David Martínez	Mexico	US RaceTronics	238	-	25	19	23	11	15	28	15	28	21	25	28
6	Andreas Wirth	Germany	Brooks Associates Racing	234	11	15	27	27	25	26	25	25	21	32	-	-
7	Alfred Unser	United States	Brooks Associates Racing	198	-	-	17	19	23	17	23	19	19	17	23	21
8	Kyle Kelley	United States	McAtee Motorsports	122	19	19	23	-	-	-	-	-	8	20	22	11
9	Chris Souliotis	Canada	Bite Racing	115	-	-	9	11	15	10	11	13	11	11	11	13
10	Dan Selznick	United States	Room Store	106	21	-	12	10	9	11	-	-	13	13	-	17
11	Chris Dyson	United States	Dyson Racing	95	23	-	15	17	21	19	-	-	-	-	-	-
12	Alan Sciuto	United States	PR1 Motorsports	69	-	-	-	-	-	-	-	-	23	29	17	-
13	Brian McAtee	United States	McAtee Motorsports	56	17	-	10	13	-	-	-	-	6	10	-	-
14	Eric Jensen	Canada	Jensen Motorsport	54	-	-	-	-	-	-	22	17	-	-	-	15
15	Tom Nastasi	United States	Blackforest Motorsports	44	-	-	-	-	20	9	15	-	-	-	-	-
16	Leonardo Maia	Brazil	Jensen Motorsport	30	-	-	-	-	17	13	-	-	-	-	-	-
17	Ryan Spencer-Smith	United States	Jensen Motorsport	19	-	-	-	-	-	-	-	-	11	8	-	-
18	Memo Rojas	Mexico	Brooks Associates Racing	17	-	17	-	-	-	-	-	-	-	-	-	-
	Grant Ryley	United States	Jensen Motorsport	17	-	-	-	-	-	-	-	-	17	-	-	-
20	Philip Giebler	United States	Condor Motorsports	15	-	-	-	-	-	-	-	-	15	-	-	-
	Daniel DiLeo	United States	Armsup Motorsports	15	-	-	-	-	-	-	-	-	-	-	15	-
22	Fernando Rees	Brazil	Brooks Associates Racing	13	13	-	-	-	-	-	-	-	-	-	-	-
	Ben Johnston	United States	Blackforest Motorsports	13	-	13	-	-	-	-	-	-	-	-	-	-
	Chris Menninga	United States	Armsup Motorsports	13	-	-	-	-	-	-	-	-	-	-	13	-
25	Adam Pecorari	United States	Jensen Motorsport	11	-	11	-	-	-	-	-	-	-	-	-	-
26	Christopher Prey	United States	Jensen Motorsport	9	-	-	-	-	-	-	-	-	-	-	9	-

Note:

Race 3, 4, 5 and 6 only one additional point awarded to the fastest qualifier, because only one session was held for each race.

In all races not all points were awarded (not enough competitors).

C2-Class championship

Points system see above. But additional points only awarded for the fastest qualifier and to the driver setting the fastest lap.

Place	Name	Country	Team	Total Points
1	Justin Sofio	United States	Binder Racing	273	31	-	32	27	32	23	32	31	33	32	-	-
2	Daryl Leiski	Canada	Bite Racing	263	-	-	23	25	22	27	28	25	21	27	33	32
3	Bob Siska	United States	RJS Motorsport	257	21	-	25	19	23	21	25	21	27	23	25	27
4	Dan Cobb	United States	Cobb Racing	240	27	27	17	15	25	33	23	27	25	21	-	-
5	Lee Atkins	United States	Atkins Racing	153	19	-	22	33	-	-	-	-	-	26	27	26
6	Mark Ishikawa	United States	Ishikawa Racing	90	25	25	-	17	-	-	-	-	23	-	-	-
7	Tim Hauraney	Canada	Condor Motorsports	71	-	-	27	23	-	-	21	-	-	-	-	-
8	Roger Glover	United States	Blackjack Racing	65	-	-	19	21	-	-	-	25	-	-	-	-
9	Rich Zober	United States	Comprent Motorsports	52	-	-	-	-	27	25	-	-	-	-	-	-
10	Tom Nastasi	United States	Blackforest Motorsports	33	-	33	-	-	-	-	-	-	-	-	-	-
11	Rocky Moran, Jr.	United States	P-1 Racing	25	25	-	-	-	-	-	-	-	-	-	-	-
12	Roby Feazell	United States	US RaceTronics	17	17	-	-	-	-	-	-	-	-	-	-	-