Who all know Saitama's true strength?
Jinzuren. Jinruzen was one of the first staff members of the hero association to become aware of the abnormal strength that Saitama possessed when he broke all records in the fitness test, in his conversation with Sneck he described Saitama as if God was residing on his body.
Saitama, however, still defeated it with one punch, then moved to save the carrier, and in the process he revealed important information on his power.
Even though Saitama is back to his usual frame of mind, where he doesn't have to use real strength, chapter 168 is proof that Saitama's strength is immeasurable, and presently there is no known limit for the hero's power.
Immeasurable Strength: Saitama possesses an immeasurable amount strength and as a result is capable of destroying powerful monsters and villains with a single one punch (though this strength is not limited to punches).
Through a glimpse into the childhood of Tatsumaki, a B-Class hero, a depiction of Blast coming into contact with this cube is shown. Consequently, the God theory suggests that Saitama gained his immense strength by coming into contact with one of these divine cubes or some godly blessing.
God is the overarching antagonist of the Monster Association arc in the manga One Punch Man and possibly the entire series. It is a mysterious entity that desires the eradication of all humanity. However, it chooses to remain hidden for the time being and instead grants powers to others who share its thoughts.
If you do something excessively or you wish to become something and you strive hard for it, you change. And that's the secret to Saitama's power: He trained so hard that he became the strongest being in the world.
Saitama from One-Punch Man has a top speed of 159,236 mph or 256,266 kph. It took Saitama 1.5 seconds to reach Earth from the moon.
It wouldn't fitting his joke that made him capable of One Punching everyone and Always win any fight undefeated. the limiter thing only proves that Saitama is limitless. Because Saitama removed his limiter.
Regardless of the outcome, Garou correctly identified that Saitama's only weakness (besides being terrible at video games) is his lack of technique and training in martial arts.
Has Saitama ever been hurt?
A cat had scratched Saitama, and he screamed in pain. Technically, he was hurt by a cat, and the community jokes about how Boros couldn't do much compared to something as harmless as a cat. However, it is essential to note that Saitama might not have reacted in a similar manner if he had been serious.
It's most likely that the protagonist of One Punch Man was able to break his limiters simply because of the sheer intensity of the training routine, considering he's an individual who clearly struggled against someone like Crablante. This is one of the most probable explanations for how he broke his limiters.

To sum things up, Saitama hasn't received a promotion to S-class as of chapter 164, but it is very likely for him to receive one after defeating a considerable amount of strong characters.
Saitama is NOT invincible, he took damage from Boros, who is planet-star level.
After saving the life of a young kid, he decided to become a hero. In that endeavor, Saitama wanted to improve his endurance and strength. He persisted with a mind-boggling routine of 100 pushups, 100 sit ups, 100 squats and 10 kilometers of running. Apparently, this workout regime is the reason why he went bald.
He did his hero training regiment everyday for 3 years. This consisted of 100 push-ups, 100 sit-ups, 100 squats, and a 10 km run everyday. He would also eat 3 meals a day, and never use A/C or heat in the summer or winter to strengthen his mind.
Under the Hero Association, he is assigned the hero name Caped Baldy (ハゲマント, Hagemanto; Viz: Bald Cape) and is currently A-Class Rank 39.
Boros is the strongest villain in the One Punch Man series so far. He was one of the few characters acknowledged by the Caped Baldy as a strong fighter. Boros' latent energy is so high that he can blow away planets. During this fight, he sent Saitama to the moon, showing just how strong he was.
Saitama takes on God in One-Punch Man: The Fight of Gods, a passion project for one fan artist. In an effort to save the universe, Saitama punches God in the face in the non-canonical One-Punch Man: The Fight of Gods, a fan-made comic based on the popular anime, manga and webcomic.
The series follows a superhero named Saitama and his disciple Genos who join the Hero Association so they can be recognized as such when they fight various monsters and villains.
Can Saitama fly?
Can Saitama fly? Like everyone else is saying, he can just jump really high and move fast. He has no flying powers.
' In an epic battle against Garou, Saitama is able to unleash the Zero Causality Fist, punching back through time to take out the villain and save his allies.
Saitama Is Finally Getting Recognized By His Fellow Heroes
After defeating the Deep Sea King, Saitama pretended to be a cheat in front of the bystanders, to rally support for the heroes that the monster had easily beaten.
She ended the battle by shoving him in the ground and running away, in which he popped out moments later. While her huge ego may deny it, she probably knows Saitama is way stronger than she is.
Under the Hero Association, he is assigned the hero name Caped Baldy (ハゲマント, Hagemanto; Viz: Bald Cape) and is currently A-Class Rank 39.
1/10 Genos: The Closest Person To Saitama Is His Apprentice
Even so, there are a few times when he even managed to give him good advice, has confidence in him, and goes out of his way to protect him.
That being said, Saitama hasn't used his full power in any of the fights in One Punch Man. However, fans expect him to go all out at some point in the story and are eagerly waiting for the character or the entity that will push Saitama to his absolute limits.
Saitama has carved valleys and destroyed meteors with the power of his fists alone, and those were among his earliest accomplishments. Without even meaning to, Saitama often destroys the asphalt under his feet, or blows the clouds back with the shockwave of his punches such that the weather changes for miles around.
Flashy flash knows how strong Saitama is yet, due to his own ignorance, he refuses to believe it : r/OnePunchMan.
Both the narrator and Garou mentioned that Saitama has limitless potential, and despite the lack of challenge, he is constantly growing. This means that even if someone is strong enough to possibly push Saitama to his limits, the Caped Baldy will surpass it and proceed to defeat his opponent.
How fast is Saitama?
Saitama from One-Punch Man has a top speed of 159,236 mph or 256,266 kph. It took Saitama 1.5 seconds to reach Earth from the moon.
References
- https://onepunchman.fandom.com/f/p/3246284089589802688
- https://www.quora.com/In-One-Punch-Man-which-characters-know-exactly-how-strong-Saitama-is
- https://www.sportskeeda.com/anime/has-saitama-ever-used-full-power-one-punch-man
- https://www.sportskeeda.com/anime/10-strongest-one-punch-man-villains-ranked
- https://screenrant.com/one-punch-man-172-saitama-a-class-promoted/
- https://screenrant.com/one-punch-man-chapter-155-evil-natural-water/
- https://gamerant.com/one-punch-man-chapter-168-saitama-strength-no-limits/
- https://www.sportskeeda.com/anime/can-anyone-one-punch-man-beat-saitama
- https://www.sportskeeda.com/anime/one-punch-man-why-saitama-hair
- https://onepunchman.fandom.com/f/p/3019575205560362564
- https://www.sportskeeda.com/anime/does-saitama-ever-become-s-class-hero-one-punch-man-manga
- https://www.sportskeeda.com/anime/one-punch-man-has-saitama-ever-hurt
- https://www.sportskeeda.com/anime/how-saitama-break-limiters-one-punch-man
- https://screenrant.com/one-punch-man-how-strong-saitama-measure-strength/
- https://www.cbr.com/one-punch-man-vs-god-fan-manga/
- https://alexaanswers.amazon.com/question/7ip4dLQAwVegXzpeMex3gN
- https://www.reddit.com/r/OnePunchMan/comments/3d5fnv/the_secret_behind_saitamas_power_and_how_the/
- https://villains.fandom.com/wiki/God_(One_Punch_Man)
- https://gamerant.com/one-punch-man-why-is-saitama-so-strong/
- https://hero.fandom.com/wiki/Saitama
- https://screenrant.com/one-punch-man-saitama-power-weakness-training/
- https://www.quora.com/What-is-the-secret-to-Saitamas-power
- https://onepunchman.fandom.com/wiki/Saitama
- https://en.wikipedia.org/wiki/List_of_One-Punch_Man_characters
- https://onepunchman.fandom.com/wiki/Characters_aware_of_Saitama%27s_power
- https://www.cbr.com/one-punch-man-saitama-closest-friends-ranked/
- https://www.quora.com/In-One-Punch-Man-how-did-Saitama-remove-his-limiter-What-would-someone-have-to-do-in-that-universe-that-removes-their-limiter
- https://www.reddit.com/r/OnePunchMan/comments/rz9dav/flashy_flash_knows_how_strong_saitama_is_yet_due/
- https://screenrant.com/one-punch-man-168-how-powerful-saitama-god/