Ashley Couper's Commonwealth Games countdown continues to go to plan as she set a new unofficial national Mile record, shaving three seconds off her previous best.

Competing in Seattle, the perennial Front Street Mile winner won on the over-sized track for the second time in three weeks, this time finishing in four minutes, 38.63 seconds.

"I am 100 percent happy with the way things are going," said Couper, who jets out to Melbourne on March 12 to join up with her Bermudian team-mates.

"The training is going really well, my body feels really good, I'm enjoying every workout and I am putting in some awesome times ? and I have no nagging injuries to worry about.

"This is how I wanted things with six weeks to go before the Games."

And Couper admits that she owes a lot to her employers for her on-track successes.

Working as an assistant coach at Stanford University, Couper has to balance her own training with the needs of the athletes in her care, some of whom she actually beat in her last win in Seattle.

"I have to say they have been very flexible and understanding with me," continued Couper, whose aim for Melbourne is a new personal best and a place in the final.

"They have been great which has helped me enormously. It can get a bit awkward, like in the last race where one of my girls was also competing. With about 400 metres left when I was making my break, I tried to indicate to her as discreetly as possible that she should go as well."

Couper will race in a strong field in Arkansas next weekend before dedicating the following three weeks to hard training.

A further race will follow in Seattle before she flies out to Melbourne where she is scheduled to compete on March 21 and 22.