Chemtai competed for Israel at the 2016 Summer Olympics in the marathon. By the 30th kilometer, her time put her in the top half of the runners, ranking her approximately 90th. She left the race at the 33rd kilometer. She explained on Facebook: “Unfortunately, I was forced to stop by a shoulder problem. As you all know, I’m still nursing my 20-month-old son. During my training in Kenya, I tried to stop, but it caused me pain and a shoulder problem due to running with breasts full of milk. This limited me in the European championships in Amsterdam (a half-marathon) and happened again today. I promise to attain respectable achievements in the future and am going forward with head held high.”