Race Comment Explainer

Original comment with matches highlighted:

held up towards rear, steady pace after 3 out, pushed along in 5th before 2 out,

Matched phrases & meanings

Phrase	Meaning
Pushed along	The jockey started to urge the horse (hand-riding, not necessarily using the whip).
Towards rear	Running near the back of the field.
One pace	The horse maintained its speed but could not accelerate or quicken.
Held up	Intentionally raced patiently at the back to save energy.
Headway	The horse was moving up through the field.
Ran on	The horse maintained or increased its speed in the final stages.

Summary

The jockey started to urge the horse (hand-riding, not necessarily using the whip).
Running near the back of the field.
The horse maintained its speed but could not accelerate or quicken.
Intentionally raced patiently at the back to save energy.
The horse was moving up through the field.
The horse maintained or increased its speed in the final stages.