They race the four-year-old with a syndicate formed by breeding giants Woodlands Stud.
Speeding Spur has won 16 of his 27 starts and over $400,000 and barring injury looks set to become a millionaire trotter before his career is over.
Read, who was at the Ellerslie races yesterday, said he was loving the experience of racing a top horse.
"The people we race it with have been great and I am a little bit nervous about this race because its a big one," Read said before the victory.
"But it is a lot of fun and a nice distraction away from rugby."
Speeding Spur gave trainers John and Josh Dickie their biggest win in harness racing on Josh's 25th birthday.
He will now return home to be set for the Rowe Cup at Alexandra Park on April 29.
"I can't believe how much this horse keeps improving," said John Dickie.
"I'd love to win a Rowe Cup with him and then he will go to the Jewels and that will be it for the season.
"But I think he can come back even better next season and his clashes with Monbet (arch rival) will be great for the industry."