If you're wringing out the throttle at interstate speeds your 800's broken or you are pulling a drag chute.
Even my WR250R with big flappy backpacks hanging over the edge loaded with me and extra junk still had a little left at 70.
2013 Triumph 800XC (Holan Pro Crashbars, TIR3 brake light)
2009 Yamaha WR250R (Mostly stock, D606's, EXC headlight, 14/49)
2008 KTM 450EXC-R (JD Jetted, Wossner, KTM hardparts farkles, AC10's, TT 100W stator, TT headlight)
2008 Subaru STi (Cobb Stage 2)