The phrase "at a considerable speed" is correct and usable in written English.
It can be used to emphasize that something is moving quickly, and can be used in the context of physical movement, as well as more figurative meanings. For example, you could say "He was running at a considerable speed."
Compared to CDPD, GPRS is supposed to represent a considerable speeding-up of the data experience on a mobile phone.
Andrae also dismissed earlier fears that there were up to three gunmen involved in the attack triggered by two bystanders fleeing in a car at "considerable speed".
While the area is residential, it is possible to drive a car at considerable speed down the straight stretch of road, detectives said.
His knuckleball veered left and right and at considerable speed, like a bicycle messenger weaving through downtown traffic.
However, the glider still impacted at considerable speed against an earth bank near to the bridge, the resulting impact throwing both pilot and co-pilot through the windscreen and knocking them unconscious and stunning the passengers.
From a geological perspective, mangroves come and go at considerable speed with the current distribution of forests a legacy of the Holocene, having undergone almost chronic disturbance as a result of fluctuations in sea-level.
The Tennessee Walking Horse a breed derived partially from the Thoroughbred, Standardbred, Morgan, and American Saddlebred horse serves as a comfortable riding mount used to cover great distances at considerable speed.
Classmates have described her, variously, as resembling a maharani, beautiful, monarchical, and very rich, and as a jet-setting princess, given to driving a yellow sports car — which was littered with parking tickets — at considerable speed, and being squired around by handsome young men in velvet jackets, who competed for her attentions at Lady Margaret Hall.
