unless you have local knowledge then your best bet is too stick with 100 miles of new forest tracks, anything interesting you do stumble upon is likley to be off limits.
That said you can have some decent rides in the forest
i cant offer any exact routes to follow as they may contain off piste sections which i’m not going to promote and unlikely others will either.
But if you like frequent pub stops then try this
start nomansland pub, lamb inn?
via howen bottom cycle trail to eyeworth & royal oak pub at fritham
then to frogham via hampton ridge cycle trail and stop at the foresters pub
Then explore your way back to nomansland! be warned if you go off piste donk forget your snorkel 🙂
even contains the odd hill!