Racecourse dream meaning is explained below using 2 different sources. Each interpretation is shown with its source.

Interpretation 1 — Zolar

lucky numbers: 04-07-15-48-49-52

being at a: are making irrational, unstable contracts.

hurt at a: wil visit someone staying at an inn and enjoy comfort for little money.

enemies at a: others aspire to your goals but don’t know how to work for them.

friends: death of a hard-earned success; birth of speculation.

important personalities: hard work awaits you after a series of misfortunes.

many people: pleasant company but danger of losses; reality passes at breakneck speed.

relatives: expected reverses in a peaceful intermission from fighting.

your jockey losing the race: a supporter wil rile you with his overconfidence.

winning: a rival wil take sweetheart’s affection, caring for her in a worldly way.

your racehorse winning: have many enemies who would stil be friends, if you lost.

losing: wil have many competitors, take them on intel igently and singly.

Source: Zolar’s Book of Dreams Numbers and Lucky Days Author: Zolar

Interpretation 2 — Internet Archive - Anonymous

Jolly company but danger of losses through sharp practices.
Source: Mystic Dream Book Author: Internet Archive - Anonymous