Longest line of swim rings / tubes
- Who
- WDS - Human Access Project
- What
- 620 people
- Where
- United States (Portland)
- When
- 05 July 2013
The most people in a floating line is 620, achieved by WDS - Human Access Project (USA), in Portland, Oregon, USA, on 5 July 2013.
The attempt took place on the Willamette River.