First Free Practice Session : Lister  and JMB Racing lead the times

Free practice for the 2003 edition of the Proximus 24 Hours of Spa started with a dry session, in which the nr 14 Lister Storm set the fastest time, with a lap of 2:18.279 round the 6.947 km track. The nr 15 Lister Racing car, driven by Andrea Piccini, David Sterkx, Gabriele Lancieri and Gavin Pickering, was second fastest, just under a second slower. Third fastest was the nr 22 BMS Scuderia Italia Ferrari 550 Maranello, with the nr 2 Konrad Motorsport Saleen S7-R fourth and the nr 1 Larbre Competition Chrysler Viper GTS-R in fifth place, meaning four makes in the top five.

The fastest N-GT car was the nr 52 JMB Racing Ferrari 360 Modena driven by 2001 N-GT Champions David Terrien and Christian Pescatori, joined by Andrea Bertolini.  They were followed by the two Team Maranello Concessionaire Ferrari 360 Modena cars, with the nr 50 Freisinger Motorsport Porsche 996 GT3-RS fourth.

Second Free Practice Session :  Konrad and Team Maranello improve

After a brief thunderstorm between the sessions, race started fifteen minutes into the second 90-minute practice session, which was declared a Wet Practice by the race director. However, the track dried relatively quickly and the weather remained changeable. Although the time set by the nr 14 Lister Storm remained the fastest of the two sessions, the nr 2 Konrad Motorsport Saleen set the best time in the second session, with a lap of 2:18.714, placing them second quickest overall. The Lister Storm was less lucky, the car crashing with Belgian driver Bas Leinders at the wheel, inflicting quite serious damage on the car, which is unlikely to be able to take part in the evening’s night qualifying session. The nr 4 Force One Chrysler Viper was second fastest in the session, with a time of 2:18.899, placing the car third overall in the Free Practice. The nr 23 BMS Ferrari of undefeated 2003 winners Matteo Bobbi and Thomas Biagi was third in the second session, placing them fourth overall.  Fastest of the N-GT cars was the nr 89 TMC Ferrari 360 Modena of Davies, Turner and Smith, setting the best time in the category throughout the two sessions, with a lap of 1:23.431.