Leading British athletes have sent a letter to the World Anti-Doping Agency saying they believe it would be "a catastrophe for clean sport" if Russia were reinstated by the body's Executive Committee next week.
The Russian Anti-Doping Agency was suspended by WADA in 2015 when an independent report led by former president Dick Pound revealed prevalent state-sponsored doping.
But WADA will discuss whether to reinstate Russia at a meeting in Seychelles on Sept. 20, even though they have yet to comply with the conditions of the WADA Roadmap.
The letter, which was addressed to WADA President Sir Craig Reedie and was signed by athletes such as Winter Olympic champion Lizzie Yarnold, read:
"On behalf of the UK Anti-Doping Athlete Commission, and fellow international athletes, we write to you to insist you and the WADA Executive Committee vote to maintain WADA's current position on the reinstatement of Russia.
"Two of the conditions directed by the Russia Roadmap have not yet been met, and to readmit them despite this would be a catastrophe for clean sport. We play our sports by the rules, and we expect the institutions that govern us, and which are there to protect us and our competition, to play by the rules too.
"The Roadmap clearly outlines what Russia must do to be allowed back. To ignore these conditions, ignores the wishes of the athletes you are there to protect. Athletes will no longer have faith in the system. It will undermine trust in the essence of fair play on which sport is formed.
"We, the athletes, insist you hold the line on the Roadmap. Do not U-turn. Do not fail Clean Sport."
STATEMENT | More British athletes have put their name to the UKAD Athlete Commission statement regarding @wada_ama's meeting on the Russia Roadmap next week ⬇️#NoUturnWADA#Im4CleanSport pic.twitter.com/BiRUwMT1tR
— UK Anti-Doping (@ukantidoping) September 13, 2018
WADA's Compliance Review panel has unanimously called for Russia to remain suspended in its recommendation to the executive committee.
In a document obtained by BBC Sport, compliance review committee chair Jonathan Taylor said Russian authorities "did not fully satisfy the Roadmap requirement because it did not specifically acknowledge the involvement of Ministry of Sport officials in the doping scheme.
The Russian Roadmap states that in order for the Russian Anti-Doping Agency to be reinstated by WADA, it must first publicly accept the reported outcomes of the McLaren Investigation and second, permit access to the Moscow laboratory, which would provide the data necessary that could be used on hundreds of outstanding cases.
Despite not complying with those conditions, there is an expectation that Russia will be reinstated by WADA next week. Russia were banned from the 2018 Winter Olympics in Pyeongchang, although athletes were allowed to compete under a neutral flag.
However, WADA's Compliance Review panel has unanimously called for Russia to remain suspended in its recommendation to the executive committee.
In a document obtained by BBC Sport, the compliance review committee said that Russian authorities "did not fully satisfy the Roadmap requirement because it did not specifically acknowledge the involvement of Ministry of Sport officials in the doping scheme.
ESPN have contacted WADA for comment but are yet to receive a response.