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.
|Lingard: Wembley loss my worst feeling in football|
|Cahill: Conte uncertainty affecting Chelsea|
|Sarri has run out of time – Napoli chief De Laurentiis|
|Barca boss Valverde salutes departing Iniesta|
|I feel like I´ve been run over by a truck or had 15 pints - Crutchlow|
|Four sent off as Ajaccio win chaotic Le Havre play-off on penalties|
|Sweden win shoot-out to retain world title|
|De Vrij penalty was destiny for Inter - Icardi|
|PSG? Maybe one day - Pogba coy over long-term future at Manchester United|
|Messi wins fifth European Golden Shoe|
|Gattuso calls for more malice at Milan|
|Barcelona 1 Real Sociedad 0: Coutinho stunner lights up Iniesta´s farewell|
|Lazio 2 Inter 3: Spalletti´s men seal Champions League qualification with stunning comeback|
|Royals reach play-offs as Kings XI come up short|
|Nadal sees clearly after Rome rain is gone|
|Double whammy for Zverevs as Mischa bows out in Geneva|
|Atletico Madrid pay fitting tribute to tearful Torres|
|Hull FC claim derby spoils, Dragons off the bottom|
|Buzarnescu battles through as McHale impresses in Nuremberg|
|Neymar an artist who will not need special treatment - new PSG coach Tuchel|
|Atletico Madrid 2 Eibar 2: Torres bows out with a double|
|Napoli 2 Crotone 1: Milik and Callejon condemn visitors to the drop|
|Iniesta starts on Barcelona goodbye but Messi rested|
|Nadal rallies after rain break to dethrone Zverev in Rome|
|AC Milan 5 Fiorentina 1: Cutrone brace secures Europa League group stage spot|
|I think I made a fantastic decision - Garoppolo key to Sherman joining 49ers|
|FIFPro appeals to FIFA over Guerrero World Cup ban|
|Neymar made mistake joining PSG - Rivaldo|
|Simple for Simon as outstanding Yates extends Giro advantage|
|Ulster qualify for Champions Cup as Biggar makes history|
|Neymar tired of rumours and staying at PSG, president Al-Khelaifi claims|
|Beaten Halep calms injury concerns ahead of French Open|
|Van der Vaart´s Midtjylland nightmare set to end|
|It has been a crazy ride - Klopp proud of Liverpool ahead of Champions League showdown|
|Raonic pulls out of French Open|
|Liverpool youngster Alexander-Arnold not overwhelmed by England call-up|
|Torres captains Atletico Madrid on farewell|
|Otaegui claims second European Tour win at Belgian Knockout|
|Green: Warriors play best when we feel threatened|
|Daredevils dump out defending IPL champions Mumbai|
|Fan shows off Monk face tattoo on bottom|
|Bayern Munich chief Hoeness rules out spending spree|
|Fury to take on Albanian Seferi in Manchester next month|
|Mourinho mind games won´t distract from Manchester United´s paused progress|
|My motivation is intact - Ranieri open to offers following Nantes exit|
|Shields would probably have made All Blacks squad - Hansen|
|Willian fuels rift talk by hiding Conte with emojis in cup photo|
|Marquez extends lead at Le Mans as Dovizioso crashes again|
|Top-six mentality a boost to England´s World Cup hopes – Southgate|
|Dominant Svitolina retains in Rome as Halep sustains injury scare|
|I´d play for free! - Fifita desperate for State of Origin call-up|
|Plea satisfied with Nice exit as big changes beckon|
|Boateng open to leaving Bayern for move abroad|
|Napoli slam ´shameful and offensive´ Juventus celebrations|
|Red Star´s open-top bus goes up in flames|
|Klopp rejects Liverpool´s Champions League final underdogs tag|
|Root trusts batting form to ´click´ for England|
|Matic wants Man Utd to back Mourinho in transfer market|
|Walker out with eye socket fracture following Melbourne-Manly brawl|
|Don´t try it at home! - LeBron wows with game three passing|
|Dragons restore two-point lead, Sharks battle past Bulldogs|
|Any club would want Buffon, says PSG president|
|Villarreal renew Calleja contract after Europa League qualification|
|Talisca heading to Premier League, hints Besiktas boss|
|Celtics ´needed to get our butts whooped´ by Cavs, says Rozier|
|Bayern should have had a penalty, admits Boateng|
|NBA great Bill Russell released from hospital|
|When I play I´m Luca, not Zidane – Zinedine´s son distances himself from father|
|Barzagli: Buffon the greatest of all time|
|Indians ace Kluber becomes first in AL to seven wins|