Emus can travel great distances at a fast , economical trot and , if necessary , can sprint at NUMBER@1 km/h -LRB- NUMBER@2 mph -RRB- for some distance at a time .

Emus can travel great distances at a fast trot . If necessary they can run at up to NUMBER@1 km/h -LRB- NUMBER@3 mph -RRB- for some distance at a time .
