Ronaldo will start a fifth Champions League final of his career when Real Madrid face Juventus in Cardiff this evening (7.45pm).
The former Manchester United star will go into the game having made history earlier in the competition when he became the first player to score over 100 goals.
Ronaldo hit that landmark during Real's quarter-final win over Bayern Munich, and followed it up with a treble against Atletico Madrid.
It means he now has 103 goals from 139 tournament appearances, nine more than fierce rival Lionel Messi.
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Cristiano Ronaldo – 103
Cristiano Ronaldo has said he always knew he would make history with Real Madrid
Messi and Ronaldo have long vied for the individual awards on offer and being crowned champion in Cardiff this evening would put him in pole position to win the prestigious Ballon d'Or prize later this year.
And the 32-year-old has revealed he had 'no doubt' he would become the first player to hit triple figures in Champions League history ahead of Barcelona's No10.
"I always believed I would be the first player in Champions League history to score 100 goals," he told UEFA ahead of a Champions League final clash with Juventus.
"I did it. It was a goal that I set myself at the beginning of the season and, thanks to God, I achieved it.
"I would obviously like to thank all my team-mates, the coach, all the staff and all the Real Madrid fans."
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Real Madrid star Cristiano Ronaldo is aiming to win the Champions League again
Ronaldo has won three of his previous four final appearances.
He won his first winners medal during his time with United, scoring against Chelsea before Edwin van der Sar's heroics in the penalty shootout gave the Red Devils the prize.
The forward was then part of the team that lost against Barcelona the following year, where Messi and ex-Chelsea star Samuel Eto'o scored to end Sir Alex Ferguson's side's hopes of becoming the first club to retain the trophy.
However, Ronaldo has experienced joy in recent seasons by playing a key role in the 2014 and 2016 final victories over Atletico Madrid.