Beyond the 3rd endless mode

Due to the game.xml Problem, there are no more endless loops past the 30,000 distance mark, so there aren't any real endless modes past the third endless mode. After the third endless mode is passed, the Repeating Room Glitch starts, so the game can continue until it breaks or you run out of balls.

4th loop
The fourth loop occurs between the distances of 36000 and 44000.

coburnanimates YT
A player called coburnanimates YT commented on the video "SMASH HIT NEW HIGH SCORE-17,998" by Trip 222, stating that he had gotten a score of 40564. "40,564.... I was playing for around 2 hours straight.... That's when you know you need help..."

MondaysAreTheWorst
MondaysAreTheWorst got a high score of 40543 on January 26, 2020 (in the pacific state time), before it was that high score, he posted a comment on 5th endless mode (at that point he commented he was a anonymous user), saying the score was exactly 36000 points (previously)."anyone realized that i scored a EXACT 36 THOUSAND?"

(However, it was previously 30923 points prior to that comment indicating the high score and prior to the high score of 40543). The high score was in Mayhem Mode.

Dus L0
Dus L0 uploaded a video known as Smash Hit Glitch In A Glitch - The Room of Purgatory (34170 points), he got a high score of 34170 in Mayhem Mode.

Other Scores
Comment on Mayhem Mode : A Closed Youtube Account had a distance of almost 36000 (which was the youtube account with the video showing the distance of 35,551).

A youtube channel called Smash Hit uploaded this Smash Hit video, demonstrating the Repeating Checkpoint Glitch:

5th loop
The 5th loop occurs between the distances of 44000 and 52000.

Rubin Hasa
Rubnhsa got 49800.

Sandeep Sharma
A Youtuber named Sandeep Sharma posted a comment on SMASH HIT NEW HIGH SCORE-17,998 that said, "My Score is 45900".

It may well be one of the former world records of the game. (comment here)

NOTE: There is no other proof, as far as I can tell. Not even a video on the channel.

Nahin Sarker
Nahin Sarker replied: I got 47089 comment here, he also commented onSmash Hit Glitch In A Glitch - The Room of Purgatory (34170 points) and that comment said My Score is 47089.

MWFAE924TGWL / Microsoft Windows XP
Another Youtuber named MWFAE924TGWL / Microsoft Windows XP commented on the video Smash Hit Glitch In A Glitch - The Room of Purgatory (34170 Points) which said "'''Well, Mine is 47228! HA! TRY TO BEAT THAT!" (comment here) '''(Although that was a reply to a certain youtuber that commented on that video). It may well be another former world record for the game.

NOTE: There's a video of him (MWFAE924TGWL / Microsoft Windows XP) failing at checkpoint 4 with 5 balls (posted only a month after he made the comment), and there is no evidence to prove this is a real score. In the video Alex plays Smash Hit, he is only at 0, and gets to checkpoint 4 with best distance of 4263.

6th loop
The 6th loop occurs between 52000 and 60000 distance.

7th loop
The 7th loop occurs between 60000 and 68000 distance.

MMAADDEEIIRRAA :v
MMAADDEEIIRRAA :v said: 67347 score days in trying to do this (comment here) on the video SMASH HIT NEW HIGH SCORE-17,998.

This is the former world record of Smash Hit.

Henzo Uriel
Henzo Uriel replied: Try to beat 62225 that's my score and I'm not kidding (comment here) on the video Smash Hit Glitch in a Glitch - The Room of Purgatory (34170 points).

This score might have been another former world record of the game, up until MMAADDEEIIRRAA :v beat Henzo Uriel with 67347 (which then was beaten).

8th loop
The 8th loop occurs between 68000 and 76000 distance. There are no known records for this distance.

9th loop
The 9th endless loop occurs between the distances of 76000 and 84000.

Marina owo
Marina owo beat the record of 67347 at one point, it was a reply for that comment Henzo Uriel posted on that video  that video. It says: Well guy gained a 78k >> :D.

78000 is another former world record of Smash Hit.

Pyro the Stunt Runner
Pyro the Stunt Runner, here FE1GuidePlayz, got 82356, the highest score as of 2020.

124th loop
The 124th endless loop occurs between the distances of 960000 and 1040000. This is considered a milestone as it passes the one million distance mark. Don't try this at home.

The maximum distance that can fit in the statistics button is 999999 (only 6 digits available), meaning that hackers, to get more than a million (1000000) most likely hacked the best distance to something impossible. (Also, the score would look very out of place. Just look at 27600 and 49800.

Playing non-stop
This would take a whopping 118560 seconds (1976 minutes a.k.a almost 33 hours or 1 day and 9 hours) to reach if the game were played non-stop, so it is most likely impossible unless you were to stay up all night and through the next day as well.

Playing non-stop would fail because the battery would run out, even in an all-day phone unless you charged it all the time.

You would likely get a very high electricity bill, and the ball count would have to be hacked unless you spend an extremely long time ball grinding.)

A tech mod might help. See the Smashing Tech Wiki.

On-off playing (Random Rooms Glitch)
An alternative method would be to waste the day time in the Random Rooms Glitch, then power the phone off all night, resetting the choice of rooms, and setting back distance to the beginning of the last room you were in.

You would still need a lot of ball grinding.

Disclaimer
(If it's not clear, Don't try those both ways at home!)

Since 999999 is the max distance, that is the maximum distance meaning that this is the maximum possible world record of Smash Hit.

Other Resets
These are some other resets that are notable.

Not all of this information has been verified to be true; in fact, it is PROBABLY NOT TRUE.