ˌinside ˈtrack noun [countable]

1. the part of a circular track for racing that is nearest to the centre of the circle and is therefore shorter

2. American English a position that gives someone an advantage over the people they are competing against:
the inside track to success in business

[TahlilGaran] Dictionary of Contemporary English ▲

inside track
an advantage, shortest distance around a racetrack
I think that he has the inside track on getting the new job at the computer company.

[TahlilGaran] English Idioms Dictionary ▲

inside track
n. phr.
1. The inside, shortest distance around a curved racetrack; the place that is closest to the inside fence.
A big white horse had the inside track at the start of the race.
2. informal An advantage due to special connections or information.
I would probably get that job if I could get the inside track.

[TahlilGaran] English Idioms Dictionary ▲