[3] His father is Shemi Sagiv (at the time known as Sabag), who represented Israel as a marathon runner at the 1984 Summer Olympics in Los Angeles, studied medicine, and is now a chiropractor, and his mother Rachela is a special education consultant.

[8] His brother Shachar Sagiv, who is three years older than Ran, is also a triathlete Olympian, and came in 20th in triathlon in the Tokyo Olympics held in 2021.

"[5] His brother Shachar will represent Israel at the 2024 Summer Olympics in Paris in the Men's triathlon at Pont Alexandre III on 30 July 2024.

[6][10] He studied at the Open University, where he graduated with a BA in Political Science and International Relations, and served in the Israel Defense Forces 8th Army at the Wingate Institute as an "outstanding athlete".

[14][17] He also came in fourth in the 2019 Karlovy Vary ITU Triathlon World Cup in the Czech Republic, in a competition that had 66 competitors, with a time of 1:56:52.

[18] Sagiv competed in the men's event at the 2020 Summer Olympics in Tokyo in 2021, coming in 35th out of 51 competitors, in hot and humid weather, a little less than two minutes after his brother who came in 20th.