Could you explain why something that is water resistant to 33 feet isn't suitable for swimming? And yes, I read your previous post. It doesn't answer this question.
My childhood watches were often waterproof to 30 feet and I swam with them all the time without issue. Unless you DROP the thing so it drifts to the bottom of a very deep pool it won't even get close to 33 feet. Most pools aren't even much deeper than 10 feet!
http://deloachwatchservice.com/other_stuff/water_resistancy.htm
"According to guidelines issued by the Federal Trade Commission, since the 1960's, watch marketers are not allowed to label their watches "water-proof". This aided us to achieve truthfulness and accuracy of product labeling and advertising.
Even watches designed for deep-sea diving cannot claim to be waterproof. The seals that keep water out are not completely impervious and
their effectiveness can be reduced over time with age, deterioration, and exposure to chemicals."
"Although they may withstand this condition for a while, if continually subjected to this situation, they will eventually leak."
"if you need a watch to be water resistant enough to be able to submerge it below the surface of the water, be sure to get one that is designed with a screw-down crown and a screw-down case back."
"water resistancy is measured in a static condition, under the pressure of a certain depth in the water, and velocity is a function of that pressure. The faster the watch travels against or through the water - like getting sprayed with a garden hose, plunging your arm in the water while swimming, or even taking a shower - the greater the pressure against the watch and could exceed the degree of water resistancy engineered for that timepiece. So, even for a watch that is water resistant to 100 feet, or approximately 30 meters, water can force it's way passed the crystal seal, case-back gasket, the setting crown, or push buttons."
"10 Meters - 33 Feet - 1 ATM - A watch with this resistance level is protected against accidental exposure to water; for example, splashes, perspiration or accidental immersion. It should not be exposed to any water pressure."
"50 Meters - 165 Feet - 5 ATM - A watch with this level of resistance is wearable around household sinks, while playing sports and while swimming in shallow water. Do not wear it while bathing, snorkeling or scuba diving."
As you can see, water resistance ratings are not intuitive and are generally misunderstood by the general public. Unlike Samsung, who I'm sure are happy to hide behind some legalese allowing them to claim water resistance, Apple doesn't want to touch this with a ten foot pole. More than likely the Apple Watch is resistant to 1ATM but they will not advertise this because uninformed consumers will inevitably take it down to 33 feet and then complain when it leaks.
watch to track a marathon distance run & having to take your phone with you too. hmm i'd stick with the garmin unless the gpx files from gps tracking can be read by Garmin & also 
