Longest line of envelopes

The longest line of envelopes consists of 11,373 envelopes, measuring 451.5 m (1,481.3 ft), and was achieved by Heart Chorus Association International Inc. (Canada) in Paro, Bhutan on 25 March 2026.

Heart Chorus Association International Inc. (HCAI) are a not-for-profit Canadian organisation with a goal of nurturing youth leaders and providing them with a sense of social responsibility. They promote personal growth and happiness in society by organising community service activities.

The record for the Longest line of envelopes has had 6 record holders, 5 of them being Heart Chorus Association International. They use this attempt as a way to bring people together by forming hearts and other designs with the envelopes, and continue to better their record result every time. The envelopes have messages of affirmation in them and were lined up by student volunteers in Paro, Bhutan