After cancelling touring for much of 2007, Sum 41 has unveiled plans to hit the road in the UK and Canada in the new year. The band will be venturing to the UK for shows in February before returning to their native Canada for a tour in March.
The band released Underclass Hero in 2007.
| Feb 21, 2008 | Brixton Academy | London, UK |
| Feb 22, 2008 | UEA | Norwich, UK |
| Feb 23, 2008 | University | Cardiff, UK |
| Feb 24, 2008 | Guild Hall | Southampton, UK |
| Feb 26, 2008 | Academy | Manchester, UK |
| Feb 27, 2008 | University | Leeds, UK |
| Feb 28, 2008 | Rock City | Nottingham, UK |
| March 1, 2008 | Barrowland | Glasgow, UK |
| March 2, 2008 | Academy | Newcastle, UK |
| March 3, 2008 | Academy | Birmingham, UK |
| March 8, 2008 | Dalhousie Arts Centre | Halifax, NS |
| March 9, 2008 | Le Bunker | Chicoutimi, QC |
| March 10, 2008 | Le 1012, Universite de Trois-Rivieres | Trois-Rivieres, QC |
| March 12, 2008 | Metropolis | Montreal, QC |
| March 14, 2008 | Theatre Granada | Sherbrooke, QC |
| March 15, 2008 | Agora de Quebec | Quebec City, QC |
| March 17, 2008 | Georgian College | Barrie, ON |
| March 18, 2008 | Stages | Kingston, ON |
| March 19, 2008 | GM Centre | Oshawa, ON |
| March 21, 2008 | The Roxy Entertainment Complex | Windsor, ON |
| March 22, 2008 | Centennial Hall | London, ON |
| March 23, 2008 | Wentworth Room, Hamilton Convention Centre | Hamilton, ON |
| March 25, 2008 | Elements | Kitchener, ON |
| March 27, 2008 | Kool Haus | Toronto, ON |