prayer and summoning have both been over 2m and i would assume easily 1m for firemaking

Not sure exactly but I did 90 - 99 Cooking in 2 days, 95 - 99 Runecrafting in 7 days and 85 - 99 Thieving in 5 days so I expect there were some nice gains during those periods. The best was probably Cooking.

Yeah, I recently got 3.3M cooking XP in one day double-clicking.

~1m xp in crafting and prayer... mind you I'm f2p, so the prayer was ALOT of clicking.

Mine would be about 1.2m in woodcutting.

 

Went from 96 to 99 in 4 days.

Just over 1.5M experience. 1.2M in crafting and the rest in fletching.

 

Second most experience was probably when I grinded from 70-80 construction in one day.

Exp Gain Records (Overall):

Day: 2,109,471

 

Was from either Prayer or Summoning, I don't actually remember :|

 

Exp Gain Records (Prayer):

Day: 2,095,516

 

Exp Gain Records (Summoning):

Day: 1,915,268

1,204,320 Fm XP. My head was pretty dizzy after I logged..

5.75m herb exp with extreme magics but lots of prep for that lol

prob one day when i was going for 99 fm. played seriously all day bc i was sick. idk how much it was but it was a lot haha

In combat, like 3m range xp (yesterday)

 

or

 

1.2m mining experience 5 days ago.

In 3 days I got 7,440,000 ranging experience using red chinchompa's. My other fastest gain was probably woodcutting ivies from 96-99 in afew days.

About 1mil fletch xp on a day I was feeling depressed and rather unloved.

One Day I Was So Sick That I Was Not Able To Leave My Bedroom. Lucky My Computers In There XD So I Got 2.3m Agility Xp.

One Day I Was So Sick That I Was Not Able To Leave My Bedroom. Lucky My Computers In There XD So I Got 2.3m Agility Xp.

The max agility experience / hr is 70k at VERY maximum, which would take 31 hours. Most average 65k, which would be 36 hours. Nice try though.

For me it would be 2.2m Herb exp, and that was before the bonus exp weekend. I was just really in a skilling mood. Over 3 days I got a lot of exp, the first 1m Herb exp, the second 1.1m and the third 2.2m.

6.5m or so.

One Day I Was So Sick That I Was Not Able To Leave My Bedroom. Lucky My Computers In There XD So I Got 2.3m Agility Xp.

The max agility experience / hr is 70k at VERY maximum, which would take 31 hours. Most average 65k, which would be 36 hours. Nice try though.

BA horn would halve those to 15.5-18 hours. Possible but unlikely if one was this sick (one would likely sleep more than 6 hours ;) ).

One Day I Was So Sick That I Was Not Able To Leave My Bedroom. Lucky My Computers In There XD So I Got 2.3m Agility Xp.

The max agility experience / hr is 70k at VERY maximum, which would take 31 hours. Most average 65k, which would be 36 hours. Nice try though.

BA horn would halve those to 15.5-18 hours. Possible but unlikely if one was this sick (one would likely sleep more than 6 hours ;) ).

You'd be surprised.

 

When I had my tonsils taken out, I spent 20 hours at a time on Runescape (and sleeping was damn-near impossible). I went from 96-99 woodcutting in about 3 days. Painkillers make it very easy to focus on Runescape for mind-numbingly long periods of time.

I just got 400k slayer xp in one day.

I think it was around 500-600k one time during 92-99 Attack.

Back in January i was really sick and i had nothing to do so i gained 1.4m fletching xp in one day and 1.2m construction xp about a week later (in a day).

I've only started using rsstats as you can tell by the many zeros:

 

 

And i've never played BA

On exp weekend I went from 93-99 summoning in a few hours which is about 5m exp or so. Other than that, the most I have gotten ("legit" as some might say) was 1.8 million firemaking exp.