Let's assume for a second that a cock is 6 1/2" long, that would be around 16cm or 17cm for the Euro crowd--porn guys being slightly larger than the average Joe Schmoe.
If a lady takes an anal pounding, say for 20 minutes, and a guy thrusts 30 times a minute, the gal is taking 180 inches/minute assuming 6 inches of depth and 1/2 inches of the base not penetrating the nether region. 180 inches/minute times 20 minutes is 3600 inches. That's 200 feet.
If a gal does 100 scenes like that, that's 20,000 feet. A prolific gal might do 250 scenes, that could be 50,000 feet. If we call it 52800 feet, another 13 scenes, that's 10 miles of boner penetration. That's longer than a golf course. Plenty of strokes there.
Instead of the 'mile high' club we might have a 'mile long club.'
A gal would have to do around 26 20 minute anal poundings. Many do half/half, part vag and part anal, if they did 10 minutes of each, a gal would have to do 50 full-on anal scenes to reach the 'Mile Long Club.'
I wonder how many porn ladies would be included in a club like that.
Sorry, I must be bored.