A triathlon is quite a unique experience, and I would advise anyone to try at least once in their life.
However, I’m aware that not everybody is willing to buy all the necessary apparel, enter a race and actually compete, just for the sake of giving it a try.
Fortunately there are other ways to try it and get a sense of what it’s like, if you’re interested. My favorite one is to do an indoor triathlon at the gym.
I’ve done it several times with my friends that wanted to give triathlon a try, and it has always been a lot of fun.
In order to do an indoor triathlon all you need is to have a membership at the gym that: has a swimming pool, offers spinning classes and is equipped with treadmills.
I’m aware that not all gyms have indoor swimming pools but, for instance, here in NYC there are quite few that have (located all around the city). If yours doesn’t have it, ask for a complimentary pass to a friend/colleague if their gyms does.