TE 250 Fuel Milage ?

I have a 2008 TE 250 with the power up kit on the bike I am starting to run enduro and I whant to know how far the bike will go be for it run out of fule

14/50 (one tooth up on CS from stock) and a conservative 100 mi (2.7gal usable) on a 3.0 g IMS tank.

37mpg or so. I'm not racing. 250's get pretty good mileage. 450's and 510's under 30.

I think the stock tank was giving up around 1.8 gal useable at most. 35 mpg would get you 63 mi on a stocker.

With the stock tank on my TE310 I'm pushing at 65 miles on a nice mellow trail ride. From experience, at race pace and I'm out at 45. Would guess your 250 will be pretty close on the stock tank.

I don't push it past 60 miles on my 2009 TE250. I usually have about .4 gallons left at 50 miles with a 1.9 gallon tank.

A fast pace day and about 45 miles on 09 te310

thank you for the info now I know how I can go with out running out of gas

Enduros generally have a gas stop every 25-30 mi. around here. I rode 32 mi last week and used less than a gal.
You should be fine with the stocker for enduro riding.