noun, feminine/vi.tɛs də kʁwa.zjɛʁ/plural: vitesses de croisière
cruising speed (speed at which a vehicle normally moves when traveling long distances); stride (pace at which one feels comfortable and things are going smoothly)
“atteindre sa vitesse de croisière” — to hit one's stride
Synonyms: rythme de croisière
Compare Dutch kruissnelheid.