My record was 3 women in one day. The first 2 about an hour apart the 3rd about 4 hours later.
Which brings me to the story involving W-1 and my self. We were set to go to a party and the W said she did not want to go. She was not in the mood and the only 2 guys she was interested in had announce they would not be there with their wives. I suggested we go and visit, have a couple of drinks, see and be seen, and just be friendly. She did not want to hook up so I agreed I would not either.
We went to the party and followed the drill. We were having drinks in a conversation pit with a few friends. People would come and go from the group but we declined invites and just sat there visiting. We finished our drinks and I went to the kitchen to get us fresh ones. Visited and chatted up people in the kitchen and finally returned to the living room only to find my wife gone. I assumed she had just gone to the restroom. So I sat. After a considerable period of time I decided to go looking for her. I found her in a bedroom with the 2 guys we thought were not going to be there. They were all naked and she was fucking one of them and the other was slowly jacking and watching. When she finished with the first one she told the 2nd to come on. They did it and by this time I am very aroused. When they finished I said I would like to join in on the fun. So I fucked my wife. (I did not have to use a condom, they did) And while I did so one of the guys took a seat in a chair and watched us. When we finished he was rock hard and close to coming. He asked my wife if she could help him finish and she obliged by fucking him again. It was fast. We went home shortly thereafter and at home we discussed the whole scene and how it came about. We both got so worked up we did it again. So she had 4 fucks with 3 guys in about an hour and a half. Or 5 fucks with 3 guys in about 4 hours. Whichever. Those were the days.

5 in a 4 day stretch.

3 (seperate) in 20 hours

Thanks to Cialis I had sex with 8 different women in a 3 hour period at a Nude Years Eve party.
I only came once with the first(my gf) but each of the others had at least one orgasm if not 2 or 3.

2 in the space of 6 weeks. Promiscuous sex is such a waste of my energy & time. I prefer wanking. But, have fun!

3 in 1 day (with no cialis).
First with my gf, then with two other girls together during a party.

Hot!

4 different guys in one day and 8 different guys in four days. Now I would love to find just one guy in a week

My story is fairly short. It would linnvolve just my wife and her sister. I got into both of them just one time each on one day, and the following day, I banged Sis in the morning, my wife a few hours later and then Sis one more time that evening in bed. By the way, this was all in 3 ways with the three of us.

Two women an hour apart, 1st wife's friend and her. Later, fucked a friend's wife and then my wife less than 6 hours later, in fact did that at least twice. sucked three guys and was sucked in 15 minutes, was really horney at the xrated video theatre.

My wife and I got into the swinging lifestyle last year. We had been regularly playing with another couple and with a female friend of ours. We brought up the idea of getting everyone together for a small orgy and everyone agreed.

I was able to fuck all 3 women that session. was super hot

Back in my college days, I fucked four different girls in one day. Those were the days !!!!

"Three and a half" - Snow White

Since the question is "number of sex partners" and not "having fucked" the answer in 12 in 4 /12 hrs. To qualify this, it was at the local bathhouse on dark-out days when all the married guys come for quick sex. I blew and/or rimmed 12 guys and received anal sex from one of them. About 1/2 of them came! I left because my jaw was so sore couldn't such anymore!!!

Just 3....my ex wife, ex girlfriend, and current girlfriend at the time.