The 1999 Rose City Grand Prix was the fifth round of the 1999 American Le Mans Series season. It took place at Portland International Raceway, Oregon, on August 1, 1999.
The 1999 Rose City Grand Prix was the fifth round of the 1999 American Le Mans Series season. It took place at Portland International Raceway, Oregon, on August 1, 1999. (en)
Das 2:45-Stunden-Rennen von Sears Portland 1999, auch Rose City Grand Prix - Portland, Portland International Raceway, fand am 1. August auf dem Portland International Raceway statt und war der fünfte Wertungslauf der American Le Mans Series dieses Jahres. (de)
Le Grand Prix de Rose City 1999, disputé sur le 1er août 1999 sur le Portland International Raceway est la cinquième manche de l'American Le Mans Series 1999. (fr)