, I wonder what the possibilities are for creating private clubs with private funding where only biological females are allowed to compete.

What's going to happen in athletics is a shit load of male athletes will enter women's races, either for profit or giggles. Then we'll have a year or two with no female winners, and the bulk of the population will kick up a stink.

It's sad to say that it may now be illegal to form women only spaces, which includes changing rooms.

Women are a lot less confrontational than men, they'll just start withdrawing from using facilities that allow men into areas where they are vulnerable. Gyms and pools etc that have single stall changing will be the only ones women will use after a bit.

Then businesses that lose female customers will start kicking up a stink about the cost of changing their facilities to single occupancy stalls.

Women, you unfortunately may need to look into this.

We've been kicking up a stink since 2017. Made some progress in the UK.