system
A chat on subreddit /r/me_irl
human
The average speed of a snail is 0.03 mph

Lets assume you're 25. Therefore, in 70 years you will be 95 and will probably be at peace with your death.

0.03mph * 70 years = 18400 miles ~ 3/4 circumference of the earth.

Therefore, it should be trivially easy to outrun the snail if you move to your antipode, and then move back in your 50s.
gpt
This info may or may not be relevant, but the lifespan of a smaller snail is 2 to 3 years and larger is  up to 10 years.