McArthur will have no chance of parole for 25 years after he pleaded guilty to the charges, according to the Washington Post.
The 67-year-old landscaper will be allowed to apply for parole at the age of 91.
The Crown had sought a life sentence with no chance of parole for 50 years, while the defence had asked that McArthur be eligible for parole in 25 years.
"Unfortunately they will live with this nightmare the rest of their lives", said McMahon, reading from his 17-page sentencing report.
McArthur murdered Skandaraj Navaratnam, Abdulbasir Faizi, Majeed Kayhan, Soroush Mahmudi, Kirushna Kanagaratnam, Dean Lisowick, Selim Esen and Andrew Kinsman between September 2010 and June, 2017. Families and friends of the respective men were not given the closure that they deserved in a timely manner.
The judge said, however, that he had no doubt McArthur would have continued to kill if he wasn't arrested by police past year.
Remains of seven of the men were found in garden planters in a Toronto home where McArthur had worked as a landscape gardener.
Handout/Canadian PressSerial killer Bruce McArthur's victims are shown in these Toronto Police Service handout photos. Perhaps not. But any symbolic gesture that this man would never again see the light of day was thrown out the window.
McMahon acknowledged other indirect victims as well, like Karen Fraser, the homeowner of the property where McArthur had buried the remains of the eight men.
But the sentence McArthur ended up receiving Friday, the Associated Press says, was the most lenient option on the table.
"The ability to decapitate, dismember his victims and do it repeatedly, is pure evil", he said.
Two police investigations into the missing men returned no leads, even though McArthur's name came up during one investigation, and he was as a witness (not a suspect) during the later one.
On the day McArthur was arrested, January 18, 2018, police surveilling McArthur saw a man, identified in the agreed statement of facts as "John", meet up with McArthur and enter his apartment.
Not only did he stage and photograph his victims so he could relive his horrific handiwork, but the "morally bankrupt" killer subjected them to the most heinous indignity after death.
The court document said police uncovered a duffle bag containing duct tape, a surgical glove, rope, zip ties, a bungee cord, and syringes - evidence pointing to some of the victims being tied up, confined and sexually assaulted prior to their deaths.
Court heard that many of them were immigrants and of South Asian or Middle Eastern descent.
The Rev. Deana Dudley of the Metropolitan Community Church of Toronto said in court that McArthur's arrest would have a "deep and lasting" impact on the LGBTQ community, according to CTV.
"This is a crime of stark horror", prosecutor Michael Cantlon said in a statement after the sentencing.
The families and friends of victims expressed frustration that the judge had not handed down the harshest possible sentence.
But if McArthur believed they would go unmissed, he miscalculated.