Blisters - do you get those during your LSRs? SJA could help.
Strapping - SJA could help.
Equipment failures? I guess your laces could snap, your shoes fall apart, ...
Weather? WTF! Who knows - it's more than a month away. It'll probably be cold and miserable.
Logistics - you might be in car crash on your way to the start. Someone ahead of you might be in a car crash on your way to the start.
You're over-thinking this. Just turn up, run, and take the medal at the end.