- Swam 23 days
- Swam (1970 km) (1224 miles)
- Start date: November 15, 2003
- Finish date: December 9, 2003
- Swim start time: 1:00 p.m.
Interesting Fact: The River Parana ends before Buenos Aires and then you have another river called, “Rio de la Plata”. From this point to the center of Buenos Aires , called, Port of Madero, seventeen swimmers previously tried to make this swim without success. Martin became the first to accomplish this swim. This swim encompassed passing River Plate Stadium.

- Water Environment at time of swim: One of the cleanest waters in the world.
- Most difficult aspects of swim: Numerous tornados. Strong water currents. Numerous piranhas. The sun.
- Range of water temperature: (23 to 25 C) (73.4 to 77 F)
- Martin’s Motivation behind the swim: It was to bring awareness. This river is one of the cleanest rivers in the world and Martin wanted to let the world know that it is possible to have such clean rivers.
- Martin’s Goal behind the swim: To complete this swim.
- Accomplished Goal: YES
- Martin’s Health at end of swim: Terrible sunburn. Exhausted. Martin was touched by approximately 30-40 piranhas and slightly bitten numerous times.
- Martin lost (9 kg) (19.8 lbs), during this swim.