The phrase "a pace of three" is correct and usable in written English.
It can be used to describe a specific speed or rate of movement, often in contexts related to walking, running, or other forms of locomotion.
Example: "The team maintained a pace of three miles per hour during their hike."
Alternatives: "a speed of three" or "a rate of three".
The ideal activity for most older people is brisk walking at a pace of three to five miles an hour.
Some walked for about 10 minutes a day, on a treadmill or by strolling around the block, at a pace of three miles an hour.
He stepped onto a treadmill and started to walk, going two miles at a pace of three miles an hour, sweating at the end, breathing a bit hard.
The robot must complete a 25-mile drive over 14 days through high desert under its own power at a pace of three to six miles a day.
Researchers from Duke University Medical Center studied overweight adults and found that only jogging 20 miles per week -- equivalent to four, one-hour workouts at a pace of five miles per hour -- burned belly fat when compared with a walking workout of only 12 miles per week -- equivalent to four one-hour workouts at a pace of three miles per hour.
The author, of course, does not name him, but adds that when the Great War started in 1914, the number of wealthy Jews who stayed behind in the city amounted to no more than "three or four". Meaning, the number of wealthy Jews in Damascus rose from one in 1904 to 3-4 by 1914, at a pace of three over a ten year period.
This month it has 21 million, and it is adding new registrants at a pace of two million a month.
A year later, he ran the same race in 2 54 48 (a pace of six minutes and forty seconds per mile), which, adjusting for his age, was one of the best performances in the marathon by anyone, ever.
It's a pace of eight minutes per mile.
That's a pace of five minutes per mile.
To date, he has made a hundred and forty-two dances, usually at a pace of two per year.
