Mo Farah broke the world record in the two-mile race at the Sainsbury's Indoor Grand Prix in Birmingham, finishing in 8:03.4 minutes.
What happened?
Farah took to the track desperate to add world record holder to his impressive list of accolades.
He became the fastest man over two miles in impressive fashion, leaving the rest of the field behind and storming to victory.
The previous record was broken by almost a second, with Kenya's Paul Kipsiele Koech crossing over more than ten seconds later.
Why it matters for Mo Farah
Farah admitted that crossing the line to the roar of a home crowd was a weight off his shoulders.
He had been asked many times when he would break a world record, and now he can say he has done it once.
Training had been going well, and he felt confident after spending almost seven weeks in Ethiopia.
What comes next?
Farah wants to be back on the track, giving something back to the crowd, and he loves coming back home and racing.
He will continue to go for championships, as going for a record and going for medals are two different things.
The event was an action-packed day of track and field action for Britain's stars, with Birchfield Harrier Jarryd Dunn keeping up an impressive run of indoor form in the 400m.
Dunn picked up 4x400m gold at the season-opening event in Glasgow before winning silver at the British Championships.
He posted a season's best time of 46.67 to finish second, behind Nigel Levine.
Olympic champion Greg Rutherford jumped a personal best of 8.17m to take victory in the long jump.
Katarina Johnson Thompson kept up her stellar start to the season, picking up a new domestic long jump record of 6.93m to seal victory.
She set herself up for the European Indoor Championships in Prague, saying record breaking is not getting boring.
Johnson-Thompson needed to do all the events before she does the heptathlon, and this was part of that, going really well.
She will get back into hard training now, focusing on her 800m training, and should be ready for Prague in three weeks.