Running side by side or in parallel (e.g., vehicles, runners, bicycles); keeping pace with someone/something.
自転車で彼と並走して駅まで行った。
I rode side by side with him to the station.
高速道路でトラックが並走していて、追い越しに時間がかかった。
Two trucks were running side by side on the highway, so it took time to pass them.
彼女は最後までトップ選手と並走してゴールした。
She ran neck-and-neck with the leading runner until the finish.