The phrase "are spread fairly" is correct and usable in written English.
It can be used when describing the distribution or arrangement of something in a manner that is considered equitable or reasonable.
Example: "The resources are spread fairly among all team members to ensure everyone has what they need to succeed."
Alternatives: "are distributed evenly" or "are allocated fairly".
That is harder to gauge using geography, as women are spread fairly evenly across media markets.
The cuts are spread fairly evenly throughout the film: we removed scenes from both the Glasgow section and the Nicaragua section.
Park advocates say Ms. White's involvement in disadvantaged communities will ensure that the department's resources are spread fairly and evenly in the city.
Rain days are spread fairly evenly throughout the year; there is no particularly rainy season in the northern Catlins, and only a slight tendency towards more autumn rain in the southwest.
Apart from these hotspots, germline mutations in APC are spread fairly uniformly between codons 200 and 1600 but rarely occur beyond codon 1600.
There's not much time for him to raise money, and whatever he does raise will be spread fairly thin.
In Berlin's thinking, they would then be spread fairly and on a permanent basis across the EU, a notion that is extremely divisive and contentious.
The Russell Group has been investigating a wide range of options to solve the funding crisis and to ensure that financial burden is spread fairly.
Nick Clegg, the deputy prime minister, denied that any of the decisions to invest in 80 new projects were made "based on a political map of the country", insisting the infrastructure was spread fairly across England and included Labour areas.
In all likelihood the effect of the maximum wage, which for all its shortcomings tended to ensure good players were spread fairly evenly throughout the top two divisions, lasted for a decade or more after its abolition in 1961.
