GLASGOW — Russian athletes, under intense scrutiny after revelations of widespread doping, remain elusive to antidoping authorities, failing to provide updates on their whereabouts and training inside military areas that are inaccessible to drug-testing officials, according to the global watchdog for sports doping.

“There are still challenges when working within Russia,” Rob Koehler, the deputy director general of the World Anti-Doping Agency, told dozens of government and sports officials on Sunday at the agency’s board meetings here.

Mr. Koehler said that recent Russian cyberattacks on WADA made it difficult to trust the country, as did Russia’s refusal to admit to state-sponsored doping after WADA published an investigative report in July that invoked forensic proof of violations.

Russia’s national antidoping agency and laboratory remain decertified as a result of the investigation, and its track and field athletes are still barred from international competition.