Chaltu Waka clocked a number of times around the 2:30 mark after winning her marathon debut in Porto back in 2013 with 2:37:47. She ran her personal best of 2:29:30 when she was third in Warsaw in 2015.
A year later Waka took the Kosice Marathon in Slovakia with 2:32:20. She was really unlucky when she found out that her stand-out performance was irregular. Waka ran 2:25:09 for fourth place in Abu Dhabi in 2018, however the course was measured short.
If the length of the course would have been accurate Waka would now have a PB of around 2:25:45. So she may be able to run such a time in Dubai. The Ethiopian won the Rennes Marathon last year with 2:30:01, however this is also a time that does not appear in the official world lists as the course is downhill.
34
Ethiopia
2:29:30
(3rd, Warsaw, 2015)