by Chris Bodenner
Organisers have told Al Jazeera that the march will start at Tahrir Square - the focal point of the protests in Cairo. The marchers are expected to pass the nearby Egyptian state television building before heading north-east, towards the presidential palace. Our correspondent says tanks and troops are stationed along the main streets towards the palace. Which means they could intervene to divert the marchers.
The march is scheduled to begin at 9am local time (7am GMT, 2am EST). An Al Jazeera correspondent at 6:10 am reports:
The protesters seem to be increasingly energised this morning. They clearly are determined to get today's march stating with a big bang. The atmosphere on Tahrir Square is very good. People seem to feel that some sort of victory is the air.