In Rawalpindi, crowds gathered for a rally while carrying flags and signs. They were exhorted to live without concern for mortality by the former cricket star.
Earlier this month, an incident occurred that resulted in one death and numerous injuries as Mr. Khan presided over a related event.
The former prime minister underwent surgery after suffering a right leg injury. He has claimed that the attack in Wazirabad was planned by members of the current administration.
Authorities have denied the charge and released a video that allegedly depicts a confession from the lone suspect in the shooting.
When Mr. Khan finally arrived at the gathering in Rawalpindi after a delay of many hours, his fans cheered.
One woman told the BBC that she had come because Mr. Khan was fighting for Pakistan's people, not for personal gain, "I am here for a leader who is supporting us."
A man in the throng remarked, "There is one man only who has been raising his voice against all the establishment. He is here to look forward, he has given us a vision."
Despite increased security, the mood was upbeat as people sang popular Pakistani songs and chanted slogans in support of the former prime leader.
Mr. Khan claimed that "three criminals" were awaiting an opportunity to try to take his life once more.
But "fear makes an entire nation into slaves," he warned his fans.
In his speech, he also acknowledged his mistakes as premier in combating corruption, stating he "failed in bringing the powerful under the law."
The gathering was referred to be the culmination of Mr. Khan's "long march," which consisted of a number of rallies during which he called for early elections.
Authorities had set up barriers and encouraged him to cancel the event in advance due to the possibility of violence.
Imran Khan, the former prime minister of Pakistan, declared his party would resign from the state assembly in a new effort to push for early elections and called off the "long march" to Islamabad out of fear of turmoil.
In his first public speech since an assassination attempt earlier this month. This was in the garrison city of Rawalpindi, close to the capital.
“„I have decided not to go to Islamabad because I know there will be havoc, and the loss will be to the country.- Ex-Pakistan PM Imran Khan
Khan fervently pleaded with his fans, stating that "chaos" would not serve Pakistan's interests given the nation's current economic situation.
With soaring inflation and a plummeting rupee, the South Asian country has been experiencing a catastrophic economic scenario. In order to avoid defaulting, it was also had to get an International Monetary Fund (IMF) loan in August.
Since he was ousted as prime minister in a vote of no confidence in April, the cricketer-turned-politician and his Pakistan Tehreek-e-Insaf (PTI) party have been organizing nationwide protests to pressure the government for early elections. He has stated that he was expelled as a result of a plot organized by the United States. In a significant U-turn earlier this month, he claimed that the US was not responsible for his removal.
The rallies, which were to culminate in a march to Islamabad, presented the risk of escalating the political unrest in the nation with nuclear weapons and an ongoing economic crisis. In May, his followers held a violent rally in Islamabad.
After failing a vote of confidence in parliament, the former international cricket player was dismissed from office earlier this year. Later, he lost his eligibility to serve in public office.
He has been charged with failing to adequately declare information about gifts, including Rolex watches, rings, and cufflinks, that he received and auctioned off while in office.
Mr. Khan claims the allegations against him are politically motivated and rejects any misconduct on his part.
Since being removed from office, he has criticized Pakistan's government and the country's strong military leadership loudly.
Mr. Khan continues to enjoy great popularity throughout the nation and draws sizable crowds to his rallies.
The government has stated numerous times that the election will take place as scheduled next year.
Political violence has a long history of being fatal in Pakistan. In the most well-known incident, former prime minister Benazir Bhutto was killed in 2007 at a gathering of the general population.