Mom-to-be Lee Si-young runs Sydney marathon; star completes 10km while seven months pregnant

Lee contrasted this approach with her first pregnancy, during which she participated in several races, including a half marathon. This time, she said, the plan was more measured and paired with spending quality time with her son during the trip.MK Sports first amplified her update with direct quotes from her social post about consistent running, focused lower-body work, medical clearance, and coach accompaniment.

Pregnancy reveal and timeline

In July, she disclosed a second pregnancy via transfer of an embryo created during marriage,and explained that the decision came as the storage period neared expiration. As her former husband did not agree to the use of the embryo, she took on full responsibility after divorce proceedings were nearly completed.

Consent controversy and social debate

The disclosure sparked polarised reactions about the permissibility of embryo transfer without a former spouse's contemporaneous consent, highlighting a regulatory gray zone in Korea. Reports noted that written consent is required at embryo creation under

bioethics law

, but no explicit statute mandates renewed consent at transfer, which officials described as not clearly illegal but unresolved. Commentaries argued the case spotlights gaps around post-divorce or solo parenthood pathways, urging legislative clarity on consent, custody, and responsibilities.

Past endurance during pregnancy

She previously ran while pregnant with her first child, including a half marathon finish and later races into the seventh month, recounting manageable conditions and sustained fitness. Recent coverage reiterated similar preparedness now, citing diligent

prenatal exercise

, OB-GYN clearance, and a coach to monitor pacing for the 10km entry.