Yes - the mens races.
They are purely biological men. Although technically no one's ever stopped a trans man competing in them they don't because of the biological difference.
In fact in swimming where Lia Thomas competes in the woman's category there is a trans man who also competes as a woman. He is a biological woman but has actually started to physically transition and has had a double mastectomy.
I don't see how the sporting bodies completely miss the fact that it's only trans woman who choose to switch sex category and yet deny that there's any reason for speedster sex categories.
In swimming - for example - a trans woman can have testosterone level of 4 something.
A biological woman competing in the woman's category must be below 1.7 - or they are banned for doping.
The fact that facts and biology and genetics are ignored in favour of someone's decision of who they are is completely undermining the purpose of sport.
There are plenty of children who train for hours on athletics tracks, in swimming pools, in gymnasiums alongside their peers who never make elite sport because they don't have the right muscle twitch or whatever.
Yet men aren't held to the same level of expectation. They can just become Anne from down the road and compete against woman. 