Straightaways are long, uninterrupted stretches of road that give drivers the chance to speed up and test their vehicles' capabilities. However, there are several synonyms for "straightaway" that can add more variety and depth to your descriptions or conversations. Some similar expressions include "straight runs," "straight courses," "long straights," "open roads," "unbroken stretches," and "straight sections." Each of these alternatives keeps the meaning of "straightaway" but presents it in a slightly different way, giving you more opportunities to set the scene or create a vivid mental image for readers or listeners. Experiment with different phrases and see which ones fit your writing style and tone best.