Race Comment Explainer

Original comment with matches highlighted:

dwelt, towards rear, pushed along well over 1f out, final , never threatened

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.
Furlong	Unit of distance; one furlong is 1/8 of a mile (approx. 200 meters).
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.
Unit of distance; one furlong is 1/8 of a mile (approx. 200 meters).
The horse maintained or increased its speed in the final stages.