I used my passports to compile my International flights (I may be missing a few flights to TLV post 2013 when they stopped stamping upon entry).
For domestic flights, I used a conservative number (I've flown over 100 transcontinental flights).
I then used
Great Circle Mapper to calculate miles flown.
Lifetime miles flown:
International: 414,076 Miles
Domestic: 280,724 Miles
Total: 694,800
Looking forward to joining the Million Mile Club in the near future.