The phrase "a separate tour" is correct and usable in written English.
It can be used when referring to an additional or distinct tour that is different from another one being discussed or offered.
Example: "If you are interested in exploring the historical sites, we can arrange a separate tour just for that purpose."
Alternatives: "an additional tour" or "a distinct tour".
A separate tour is scheduled to make 27 stops in Florida, one in each of the state's congressional districts.
In collaboration with the Harvard College Admissions Office, SEAS offers a separate tour dedicated to undergraduate programs in engineering and applied sciences.
The Americans had already quit, and from then on the wheelchair group would stick to Tarmac, effectively splitting off on a separate tour.
During a separate tour of the nearby National Hospital, Paul breezed through and greeted surgeons, but he didn't spend much time bending down to shake the hands of patients.
The train – ordinary Trenitalia rolling stock, sadly, not the Papal steam train – takes an hour to reach the town of Albano Laziale, where a shuttle bus takes passengers to the summer palace (a separate tour of the palace interior is available at extra cost).
Each cluster of customers as well as the nearest DP is then delivered by a separate tour which is computed with the Clark-Wright Savings algorithm.
Coming off of a world tour with Porter Robinson and a separate headlining tour to support his most recent No Reason EP on Fools Gold, Giraffage's Charlie Yin finds himself in what's become a rare extended stint at the new home he shares with his girlfriend in San Francisco's Richmond district.
The women have had a separate pro tour, except at the major championships, since 1971.
She also offers a separate Sopranos tour, which remains popular despite the series ending in 2007.
That concern evaporated, Martina said, when the four were divided into separate tour groups last week.
He and Tariq had been best friends once; now they rode in separate tour buses — he dubbed his Gryffindor and Tariq's Slytherin.
