The half marathon world record now begins with a 56. Jacob Kiplimo of Uganda took a whopping 48 seconds off the previous record Sunday morning at the 2025 Barcelona Half Marathon, clocking 56:42 to become the first man to ever break 57 minutes.

Uganda’s Jacob Kiplimo smashed the world half marathon record with a blistering time of 56 minutes and 42 seconds, shaving 48 seconds off the previous record.

Jacob Kiplimo shattered the half marathon world record with a blistering run on Sunday. The 24-year-old Ugandan was competing in the Barcelona half marathon where he became the first person ever to complete the distance in under 57 minutes,