2013 USA: Pirelli World Challenge GTS
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Calendar
| # | Epreuve |
|---|---|
| 1 |  St. Petersburg Race 1 (23 March) |
| 2 | St. Petersburg Race 2 (24 March) |
| 3 | Long Beach (20 April) |
| 4 | Circuit of Americas Race 1 (18 May) |
| 5 | Circuit of Americas Race 2 (19 May) |
| 6 | Detroit Belle Isle Race 1 (1 June) |
| 7 | Detroit Belle Isle Race 2 (2 June) |
| 8 | Lime Rock Race 1 (5 July) |
| 9 | Lime Rock Race 2 (6 July) |
| 10 |  Toronto (13 July) |
| 11 | Mid-Ohio Race 1 (3 August) |
| 12 | Mid-Ohio Race 2 (4 August) |
| 13 | Sonoma (24 August) |
| 14 | Houston (4 October) |