An emphatic 4-0 win for Hearts on Sunday saw Celtic's unbeaten domestic run finally come to an end after 55 Scottish Premiership games without tasting defeat.
Outside of European competition, the Bhoys, who are chasing their seventh successive title this season, had not lost since going down 2-1 away to St Johnstone in May 2016.
Brendan Rodgers' side remain two points clear at the top of the table and can be confident of retaining their crown ahead of challengers Aberdeen and Rangers.
And while their streak is finally over, they can now rub shoulders with a select group of teams from across Europe to have orchestrated similar feats.
Here's a look at some of the other clubs to have held such mastery over their respective national league competitions....
AC Milan | 1991–1993 | 58 matches
The Rossoneri of the late 1980s and early 1990s continue to be remembered as one of the best teams in modern football history.
Until Real Madrid's triumph over Juventus in the Champions League in Cardiff in June, they were the last side to retain the European Cup.
That achievement came under Arrigo Sacchi in 1989 and 1990, but it was his successor Fabio Capello who oversaw a 58-match unbeaten run in Serie A, which included marching to the 1991-92 Scudetto without suffering a single defeat.
Given Italian football's status at the time as the world's premier domestic football competition, Milan's achievement is hard to top.
Porto | 2010-2012 | 55 matches
Taking over from Jesualdo Ferreira and being followed by Vitor Pereira, coaching prodigy Andre Villas-Boas did not suffer a single league defeat during his time in charge of Porto.
The Dragons won the Primeira Liga, Portuguese Cup and UEFA Europa League in his lone campaign at the helm, before he resigned to take over at Chelsea.
Nicolas Otamendi, Fredy Guarin, Joao Moutinho, James Rodriguez, Radamel Falcao and Hulk all starred in a team that went 55 league matches unbeaten, surpassing Porto's previous best of 53.
That tally had been established between 1994 and 1996 by Bobby Robson, the Englishman who helped Villas-Boas to break into the world of elite football coaching.
Lincoln Red Imps | 2009-2014 | 88 matches
They might lack the standing of Milan or Porto, but Lincoln Red Imps deserve recognition for their marathon unbeaten league record in Gibraltar's Premier Division.
From May 9 2009 to September 19 2014, they avoided defeat in the competition.
At 1,959 days, it is - according to UEFA - the longest chronological unbeaten league run in European football and helped them to rack up 14 consecutive titles from 2002-03 to 2015-16.
And the name will be familiar to Celtic fans, Lincoln having stunned the Hoops 1-0 in Brendan Rodgers' first match in charge in July 2016.
The Scottish giants avoided an embarrassing exit from the second qualifying round of the Champions League by winning the second leg 3-0 in Glasgow.
Steaua Bucharest | 1986-1989 | 104 matches
The longest unbeaten league run in European football remains the proud property of Steaua Bucharest.
The Romanian powerhouse lasted an extraordinary 104 league games before finally losing and managed to win every one of their 15 Romanian Cup matches in that spell, making it a total of 119 unbeaten domestic fixtures.
Their dominance at home also translated to success on the continental stage, Steaua stunning Terry Venables' Barcelona on penalties to win the European Cup in Seville in 1986.
|How Serena gave up 5-1 lead – the key moments of loss to Pliskova|
|Pliskova enjoys ´best comeback´ after stunning Serena|
|Serena not blaming ankle injury for Australian Open loss|
|Mavericks capitalise on Clippers´ turnovers, pick up win in Smith´s return|
|Pliskova saves four match points to stun Serena with comeback win|
|Anthony ´can only make´ a team better, says Iverson|
|Henry more worried about Monaco´s future than his own|
|Osaka powers past Svitolina in Melbourne|
|Harden on Anthony trade: It kind of sucks that it didn´t work out|
|Redskins remain ´optimistic´ QB Alex Smith will play again|
|Patriots coach Belichick says Rams´ Donald is ´pretty much unblockable´|
|PSG fined €100,000 by LFP over player-recruitment practices|
|I´m not his father - Guardiola demands Mendy matures|
|Sykes record in vain as Banvit claim victory|
|Usain Bolt calls time on football career|
|Otamendi not happy at Man City, says Guardiola|
|Workaholic Woods learning to rest as he prepares for 2019 debut|
|Henry´s Monaco dumped out of Coupe de France|
|Qatar can win Asian Cup, says Sanchez|
|Tim Howard to retire following 2019 MLS season|
|Koscielny backs Bellerin to return from injury ´stronger than before´|
|Chiefs fire DC Bob Sutton after AFC Championship loss to Patriots|
|Reyes returns to Spain with second-tier strugglers Extremadura|
|Emiliano Sala: Profile of Cardiff City striker missing after joining from Nantes|
|Messi rested for Sevilla trip, Boateng set for debut|
|Nuno fined over pitch celebration in Leicester win|
|Nadal unfazed by another Next Gen opponent in Tsitsipas|
|Ulster hand lifetime ban to spectator after Zebo abuse|
|Phehlukwayo´s career-best day inspires Proteas against Pakistan|
|Bournemouth pounce for Brentford´s Mepham|
|You say all signings are controversial – Valverde defends Boateng arrival|
|Search for missing Sala plane suspended|
|Kohli and Williamson display mutual respect as India and Black Caps prepare for battle|
|Qatar 1 Iraq 0: Al Rawi free-kick books quarter-final spot|
|Ba joins Adebayor and Robinho at Istanbul Basaksehir|
|BREAKING NEWS: Tottenham´s Alli out until March with hamstring injury|
|Fit-again Joseph added to England squad|
|It is very, very serious for us - Tuchel wants midfielder in January window|
|Lakers expect Rajon Rondo back Thursday as LeBron James continues rehab|
|Atletico Madrid boosted as Koke thigh injury revealed to be minor|
|South Korea 2 Bahrain 1 (after extra time): Kim Jin-su seals quarter-final spot|
|AC Milan confirm Zapata thigh injury|
|I miss him a lot - Guardiola confirms ´clever´ Mendy back in Man City squad|
|Tiafoe wants LeBron meeting after run to Australian Open quarters|
|Cardiff continue to ´pray´ for Sala|
|West Ham fined over Burnley clash chaos|
|Knicks star Enes Kanter frustrated by reduced role|
|Kvitova getting back to her best, says Barty|
|Kvitova revels in first semi of ´second career´|
|Messi´s the best player in every world – Boateng dismisses past Real Madrid comments|
|Thunder frustrations continue against Renegades|
|Alonso vows to clear name in tax fraud case|
|Classy Nadal downs Tiafoe to set up Tsitsipas semi|
|Hoedt leaves Southampton for Celta Vigo on loan|
|Melbourne City 4 Western Sydney Wanderers 3: Hosts edge thriller with two goals in last six minutes|
|Wilder won´t even pick up the phone - Hearn not hopeful of AJ bout|
|Sala was on board missing plane, say French authorities|
|Arsenal´s Bellerin out for season with ACL rupture|
|Gatland waiting on ´concrete´ offers|
|Ronaldo accepts prison sentence and €18.8m fine for tax fraud|
|Tsitsipas: It was vital to back up Federer win|
|Awesome Kvitova ends Barty´s home run in Melbourne|
|CA rejects Thunder appeal for full points in abandoned Heat clash|
|Emiliano Sala: Concerns grow for Cardiff striker after plane goes missing|
|Harden unimpressed with refs in Rockets´ 76ers disappointment|
|Ronaldo arrives for sentencing in tax fraud case|
|Record-breaking evening ´one of those nights´ for Warriors star Thompson|
|Hazard still interested in Real Madrid but won´t rule out Chelsea stay|
|Collins moves past Pavlyuchenkova, into Australian Open semis|
|Kohli makes history with ICC awards sweep|