I too believe the mileages posted by Amanda, Kajsa and Alicia. However, if you consider that Amanda is now the record holder, I believe you also have to be able to state what her distance is. Because she is still piling on the miles, you can't do that.
For a record to be of any value, there has to be ratification, and a target for future attempts. Take a look at the spreadsheets for Kurt's attempt last year. For whatever reason, there are discrepancy between the miles posted on there and his final, ratified, total. For all we know Amanda's total might need some adjusting as well.
Here is a hypothetical , and extremely unlikely, question. Suppose after reaching 40,000 miles, Amanda "declared" her attempt over and asked for her record to be ratified, and the UMCA agreed with that total and posted it as a new record. Could she then add on any more miles she happened to cycle in the year?
What about Steve's month attempt? If he gets that, but in the same time, Amanda cycles more miles within her year record, does he hold the record? Of course he does! We are pretty sure that Tommy Godwin posted some huge months in his year, but no one considers them the record, because he didn't enter a "Month" record attempt.