"at one stretch" is a correct and usable phrase in written English.
It is used to mean one continuous period of time, without interruption or a break. For example, "I watched the entire movie at one stretch."
Randy Wolf (4-8) won four of six starts at one stretch this season, but has fallen on hard times of late.
At one stretch, the river was banked by steep cliffs on either side and there were clusters of castles and turreted buildings everywhere.
At one stretch he hit 13 straight shots.
He retired 11 straight batters at one stretch.
Loewer walked none and struck out eight, retiring 14 straight batters at one stretch.
At one stretch in the 55-minute match, Seles won 10 of 11 games.
Well it was like that, we were not moving at all on one stretch of the motorway.
Yes, they acknowledged, Amtrak had lousy service on many routes, but there was hope on at least one stretch of tracks.
That it was fast was clear in 1938, when Rudi Caracciola, a racecar driver, drove a Mercedes Grand Prix single-seater on one stretch at 268.9 miles an hour.
We considered as a potential poly(A -tail, A -tailw of 50 nucleotides containing at least 35 adenines, windowt least ofe stretch of 50adenucleotidesless than 10 thymines.
To get sequestered into the membrane, a protein needs at least one stretch of 15 20 amino acid residues that promotes membrane insertion3.
