| Roles | Competed in Olympic Games | 
|---|---|
| Sex | Female | 
| Full name | Marlies•Rostock (-Dotzauer, -Fraas) | 
| Used name | Marlies•Rostock | 
| Born | 20 April 1960 in Klingenthal, Sachsen (GER) | 
| Affiliations | SC Dynamo Klingenthal, Klingenthal (GER) | 
| NOC |   East Germany | 
| Medals | OG | 
| Gold | 1 | 
| Silver | 0 | 
| Bronze | 0 | 
| Total | 1 | 
Marlies Rostock won gold in the cross-country relay at Lake Placid and a silver medal at the 1978 World Championships. At the national level, she placed third in the 1980 5 km and the 10 km in 1978-80. She was married to Nordic Combined Uwe Dotzauer, though they later divorced. She then married Stefan Fraas, general music director of the philharmonic orchestra Vogtland.
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1980 Winter Olympics | Cross Country Skiing (Skiing) |  GDR | 
Marlies Rostock | |||
| 5 kilometres, Women (Olympic) | 9 | |||||
| 10 kilometres, Women (Olympic) | 7 | |||||
| 4 × 5 kilometres Relay, Women (Olympic) | East Germany | 1 | Gold |