"mark the way" is a correct and usable phrase in written English.
You could use it when giving directions; for example, "Mark the way by laying stones along the path."
The path crawls upward through a vast jumble of boulders, where improvised cairns mark the way.
Confusingly, a draft law on secession is also being prepared to mark the way out for those who want one.
In insects, certain isoprenoid substances influence maturation and mating behaviour, communicate alarm or repel predators, or mark the way between the nest and sources of food.
Some tracks mark the way whole genres have risen and fallen in the time it took Rose to pull his finger out.
Those banners mark the way to Paulsboro High School, an old multistory stone building in an era of low-slung, sprawling high school campuses.
"Mark, the way the runoff turned out between you and Freddy Ferrer, isn't it time to say we're going to conduct, you should conduct a real investigation of what happened?" Mr. Bloomberg asked.
Only luminous paint marks the way.
One in front of the other marks the way.
The sign marking the way reads, "Trespassers will be arrested".
It stood there again in this new photograph, like a guidepost, marking the way back.
With map in pocket, thirsty cyclists can follow bright blue "Colorado Wine Trails" signs marking the way.
