Whats Best Way To Train Thieving At 40?

[The Professor]

Fremmeniks is best.

[JimboBetter]

kk im 49 now, 4 more lvls! then 12 fm, lvls then dt!!!

im off to fremmeniks. +Repped u all

[JackBuddy]

I thought master famers were good, do the fued quest and get 15k xp.

[JackBuddy]

Sorry for double post, here are some quests with an xp reward.
Biohazard1,500 expCreature of Fenkenstrain1,000 expDarkness of Hallowvale6,000 expDeath to the Dorgeshuun2,000 expFairy Tale Part II, A - Cure a Queen2,500 expFeud, The15,000 expFight Arena3,375 expFremennik Trials, The2,813 expGolem, The1,000 expHand in the Sand, The1,000 expIcthlarin's Little Helper4,500 expMourning's Ends Part 125,000 expRat Catchers4,500 expSlug Menace3,500 expSpirits of the Elid1,000 expTribal Totem1,250 ex
(Taken from RuneHq)