The 1970 Rothmans 12 Hour was an endurance motor race for Group E Series Production Touring Cars. The event was held at the Surfers Paradise International Raceway in Queensland, Australia on 4 January 1970 with the field divided into four classes determined by the retail price of the vehicle.
The race was won by Colin Bond and Tony Roberts driving a Class D Holden Monaro HT GTS350 for the Harry Firth run Holden Dealer Team. The pair, who four months earlier had won the 1969 Hardie-Ferodo 500 at Bathurst, covered 435 laps of the 3.219 km (2.000 mi) circuit for a distance of 1,400.265 km (870 mi).
Car competed in four price classes: [1]
| Position | Drivers | No. | Car | Entrant | Laps | |
| Class A: Up to 1860cc | ||||||
| 1 | Wally Scott, Eric Olsen | 43 | Toyota Corolla | WJ Scott | 398 | |
| 2 | Peter Lefrancke, Blair Salter | Toyota Corolla | AMI Racing Team | 392 | ||
| 3 | Lionel Cordingley, Frank Leggatt, Brian Scoffell | Morris Mini K | LW Cordingley | 373 | ||
| 4 | Barry Tapsall, Bill Evans | Datsun 1000 | Datsun Racing Team | 329 | ||
| 5 | G Geshopulos, D Fraser | Hillman GT | George Geshopulos | 152 | ||
| DISQ | Punch, Simpson | Datsun 1000 | Datsun Racing Team | |||
| Class B: $1861 to $2250 | ||||||
| 1 | Dave Morrow, Bob Wootton | Datsun 1600 | DJ Morrow | 413 | ||
| 2 | Frank Coad, Jon Leighton | Datsun 1600 | Datsun Racing Team | 408 | ||
| 3 | John Roxburgh, Graham Cosworth | 31 | Datsun 1600 | Datsun Racing Team | 402 | |
| 4 | Bill Beverley, Tony Basile | Mazda 1200 Coupe | Bill Beverley Motors | 384 | ||
| 5 | B Jemison, D Booty | Datsun 1600 | Windmill Star Service Station | 382 | ||
| Class C: $2251 to $3100 | ||||||
| 1 | Don Holland, Bob Skelton | Morris Cooper S | Miniland | 426 | ||
| 2 | Joe Camilleri, John Humphrey | Morris Cooper S | Grand Prix Auto Service | 422 | ||
| 3 | Trevor Meehan, T Strickland | Morris Cooper S | Trevor Meehan | 418 | ||
| 4 | Ron Kearns, Bob Forbes | Fiat 125 | Zanardo & Rodriguez Sales and Service | 415 | ||
| 5 | Terry Friar, Bill Lubke | Mazda R100 | Terry Friar | 389 | ||
| 6 | Mick McGregor, Bob Gibson | Morris Cooper S | Keith Beaney | 380 | ||
| 7 | Roy Rogers, B O'Brien, F Hunt | Mazda R100 | Roy Rogers | 371 | ||
| ? | George Giesberts, C Wenzel | 19 | Holden Torana LC GTR | |||
| ? | Jenny Parker, Rod Arthur | Morris Cooper S | ||||
| DNF | Cronan, Cortese | Holden Kingswood V8 | ||||
| Class D: Over $3100 | ||||||
| 1 | Colin Bond, Tony Roberts | 5 | Holden Monaro GTS 350 | Holden Dealer Team | 435 | |
| 2 | Bill Gates, Jim Bertram | 1 | Ford Falcon GTHO | McCluskey Ford Pty Ltd | 434 | |
| 3 | Barry Arentz, Brian Michelmore | 4 | Ford Falcon GTHO | Central Auto Sales and Service | 429 | |
| 4 | Paul Zacka, Graham Perry | 6 | Holden Monaro GTS 350 | New Formula Motors | 409 | |
| 5 | Pat Peck, Doug Macarthur | 3 | Ford Falcon GTHO | D & P Traders Pty Ltd | 405 | |
| 6 | Keith Williams, Max Volkers | 7 | Holden Monaro GTS 350 | Lockhart Motors | 403 | |
| 7 | Glynn Scott, Roy Griffiths | 2 | Ford Falcon GTHO | McCluskey Ford Pty Ltd | 398 | |
| DISQ | Bill Tuckey, Sib Petralia | 8 | Holden Monaro GTS 350 | Boyded |