This Lou Feck cover makes me want to find out what the book is about.
This Frank Cazzorelli cover has a German expressionist quality to it, as if the woman’s terror were distorting the surroundings
This Richard Powers cover is from a Y/A book I read as a teen. It’s not as wild as many of his covers but it conveys the sense of Olympics+Science Fiction well.
All rights to images remain with current holders.
There’s a comment about the first cover at:
https://www.blackgate.com/2015/10/31/vintage-treasures-the-janus-syndrome-by-steven-e-mcdonald/
The incongruity of jock-strap-and-space-helmet does get your attention! I have to confess, I didn’t notice the main character was black–was too busy looking at other things–but even now that’s pretty rare on SF covers, I think.
I read that one — someone posted it to the FB group where I posted the cover image.