This promises to be one of the most open of the men’s events.
All three medal winners from Istanbul two years ago are back again: Morocco’s Abdalaati Iguider, Turkey’s Ilham Tanui Ozbilen and Ethiopia’s Mekonnen Gebremedhin.
The field also includes Djibouti's world 800m bronze medallist Ayanleh Souleiman who, despite his Moscow accolade, prefers the longer distance.
Others likely to be in the mix are Mohamed Moustaoui, the Moroccan who heads the 2014 world list with a hand-timed 3:35.0, the Kenyan pair of Bethwell Birgin and Silas Kiplagat and USA's Will Leer, the bearded winner of last month’s Wanamaker Mile in a world-leading 3:52.47 for the imperial distance.
Simon Turnbull for the IAAF