The track supplied with Speedtrack, Powertrack and Powertrack Plus was exactly the same. As slot racing goes, the track was very well made and very good qulaity, though it is fair to say some aspects of the track connection have succumbed to time - but that said, generally the track is durable and easy to keep clean.
The Straight sections were available in the following lengths:
SPEEDTRACK:
14-37-20 Straight 9"
14-37-22 Straight 6"
14-37-72 Straight 15"
POWERTRACK:
PT-201 Straight 9"
PT-204 Straight 6"
PT-206 Straight 15"
POWERTRACK PLUS:
PP-201 Straight 9"
PP-204 Straight 6"
PP-206 Straight 15"