For the duration of is wordy for during, through, for, or throughout. In most cases, there’s no reason not to condense for the duration of into one of these one-word equivalents.
Example
For example, shortening for the duration of would make these sentences more concise:
Street sweeping would be suspended for the duration of [during?] a shutdown, city officials said. [Washington Post]
They offer a guaranteed tax-free income for the duration of [throughout?] the injured person’s life … [Scotsman]
For the duration of [during?] the trial, the Department of Education has not taken funding away from schools who would otherwise receive less under the new model. [Sydney Morning Herald]
The 2009 MVP, Evgeni Malkin of the Pittsburgh Penguins, is out for the duration of [for?] the season. [Globe and Mail]
