When having s.e.x, how many "cm" can a woman endure?

According to a report in the journal Human Reproduction, the average vaginal depth is 6.2 cm.

As reported in the journal BJOG, the average vagina is about 9.6 cm–17.7 cm deep.

According to Masters and Johnson's method of measuring the vagina in 100 women who have never been pregnant to find out how deep the vagina is, the normal vaginal depth is 7–8.3 cm. When sexually stimulated, the length of the vagina can be up to 11–12 cm.

Some other sources report that, in a normal state, the depth from the vaginal opening to the beginning of the cervix is ​​about 7.6–10 cm.