609 in 2015 and later

648 past in 2015 (updated 17-07-'15)

Sources

KNZB (The Netherlands)

Netherlands Open Water Web

USA Swimming

New Zealand Herald Swimnews

AquaSphere

Australian Swimming Federation

East Dorset Open Water Swimming club

ElDepornauta

FFN (France)

FreshwaterSwimmer

Insweep

Loneswimmer

Marathonswim.Greece

marathonswimmers.org

Musings of an aquatic ape

Nadandolibre los Mejores del Mundo

New York Times Swimming

Noticias de la Real Federación Española de Natación

Oceanswims blogspot

owsalicante

Penny & Chris Palfrey

Perunmondosenzabarriere.blogspot.com

RobAquatics

Swimming Canada

SwimmingWorldMagazine

SwimNews

SwimNews-France

Swimvortex

thelongswim.Karen Throsby

Travessias

Utah Open Water Swimming

Wild Swimming

Yuzmeplus

Zwemkroniek Nieuws

Zwemza

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