Map of the Battle of Dayr al-'Aqul, and of the routes taken by the Saffarid army (red) and main 'Abbasid army (blue). This map was created for the article http://en.wikipedia.org/wiki/Battle_of_Dayr_al-%27Aqul.
The route taken by both armies are relatively straightforward. However, the movement of the Saffarid forces through al-Ahwaz province is somewhat speculative, as there were multiple roads between 'Askar Mukram and al-Sus; it is possible that they instead took the more northerly road that passed through Tustar and Junday Sabur before reaching al-Sus.
The principal sources for this map are al-Tabari, pp. 168-70; al-Mas'udi, pp. 41-43; and Ibn Khallikan, pp. 313-19. Geographical information is principally derived from the maps of Le Strange and Popovic in their respective works.
Background topography taken from DEMIS Mapserver, which are public domain.

Works Cited:

Ibn Khallikan, Shams al-Din Abu al-Abbas Ahmad ibn Muhammad. Ibn Khallikan's Biographical Dictionary, Vol. IV. Trans. Bn. Mac Guckin de Slane. Paris: Oriental Translation Fund of Great Britain and Ireland, 1871.
Le Strange, Guy. The Lands of the Eastern Caliphate: Mesopotamia, Persia, and Central Asia, from the Moslem conquest to the time of Timur. Cambridge: Cambridge University Press, 1905.
Al-Mas'udi, Ali ibn al-Husain. Les Prairies D'Or, Tome Huitieme. Trans. C. Barbier de Meynard. Paris: Imprimerie Nationale, 1874.
Popovic, Alexandre. The Revolt of African Slaves in Iraq, in the 3rd/9th Century. Trans. Léon King. Princeton: Markus Wiener Publishers, 1999. ISBN 1-55876-162-4
Al-Tabari, Abu Ja'far Muhammad ibn Jarir. The History of al-Tabari, Volume XXXVI: The Revolt of the Zanj. Trans. David Waines. Ed. Ehsan Yar-Shater. Albany, NY: State University of New York Press, 1992. ISBN 0-7914-0764-0
Own work
Ro4444