McLaren was appointed by the World Anti-Doping Agency (WADA) to conduct an investigation into allegations of a doping cover-up in Russian sport, with the findings made public on Monday.
"The Moscow Laboratory operated, for the protection of doped Russian athletes, within a state-dictated failsafe system", the report said.
A state-directed cheating programme in Russian sport resulted in no fewer than 312 positive results for doping being withheld, an inquiry has found.
Rodchenkov told the Times that Russia's secret service figured out how to open up sealed urine samples months before the Sochi Games began, and during the Games samples from athletes participating in the doping program were passed through a hole in the wall of the Sochi anti-doping lab so that they could be replaced with clean samples.
McLaren also said Russia's cheating also included the 2013 track world championships in Moscow and was in place during the 2015 swimming world championships in Kazan.
McLaren claims that every positive test was passed before the deputy Minister for Sport, Yuri Nagornykh, who "decided who would benefit from a cover up and who would not be protected".
Mr McLaren suggested the numbers could have been higher, but he had only 57 days for his investigation, which was commissioned by the World Anti-Doping Agency after the Times story came out.
Several athlete and anti-doping groups, including the U.S. Anti-Doping Agency, were gearing up over the weekend to send letters to the International Olympic Committee urging that Russia's entire delegation be banned from next month's Rio Games.
"The only appropriate, and permissible, course of action in these unprecedented circumstances is for the IOC to immediately suspend the Russian Olympic and Paralympic Committees from the Olympic Movement??.??and declare that no athlete can represent Russia at the Rio Olympic Games". McLaren says it's up to other sports bodies to determine the next steps.
The report shows a number of Russian athletes being found positive for banned substances, but then having their test results go "missing", or swapped for a negative test.
- Grigory Rodchenkov, the former head of the Moscow lab who first went pubic with information on state-sponsored doping, was "a credible and truthful person", as were other witnesses interviewed in the investigation.
Richard McLaren of Western University unveiled the report's findings this morning in Toronto.
The World Anti-Doping Agency has also spoken out against the systematic Russian cheating.
He said a US-Canadian letter pushing for a total ban on Russian competitors at Rio was based on "rampant speculation" about the findings.
The Russian athletics team has already been banned from competing at the 2016 Games in Rio de Janeiro.
Reedie said WADA is working to establish non-binding guidelines that will help the IOC and worldwide sports federations identify exceptions to the Russian ban - notably, Russian athletes who trained in other countries that had robust, clean anti-doping systems.
McLaren said that he would not be making any recommendations to the International Olympic Committee, but said that "for those [Russian athletes] who are competing as real sportspersons, I feel sorry for them".