The phrase "a straightaway at" is correct and usable in written English.
It can be used in contexts related to racing, driving, or any situation where a clear, unobstructed path is being described.
Example: "The driver gained speed as he approached a straightaway at the racetrack."
Alternatives: "a straight path at" or "an open stretch at".
Stewart spun at the first turn, which sits at the end of a long straightaway at the bottom of a hill, and is bumpy enough to send any car spinning.
After a few missed opportunities early on, including a header off a corner kick that just sailed over the crossbar, the scoring push for Glendale started when junior midfielder Berj Ghazarian blasted a straightaway shot from at least 25 yards out to put the Nitros on the scoreboard in the 31st minute.
The researchers who examined Pistorius were instructed to study only his performance while running on a straightaway — when he was at his fastest.
"I knew that she was coming back from an injury, so it's not so easy to take a month off and be back straightaway at a tournament where you played so well last year.
...Ashley Taylor stepped up in the starting lineup and performed great, but we just had a great team effort". Meanwhile, Pasadena, despite taking plenty of shots with nine total attempts, could only find the back of the cage once in the first period on a straightaway goal from Madeline Pirrone at the 3 45 mark.
Both events begin with a sprint down the straightaway at their normal start.
On our way back, we hit a straightaway of new macadam, near the Army post at Razmak.
In fact, this area was called the Harlem River Speedway at the beginning of the 20th century, a straightaway for horse and carriage racing.
Quarter-horse racing, in the United States, the racing of horses at great speed for short distances on a straightaway course, originally a quarter of a mile, hence the name.
The game was tied at 91-91 in overtime when Fisher struck again, hitting a straightaway 3-pointer on a pass from Bryant.
