Books into Z, about 11,600 miles round trip. Earns 200% with Alaska, 110% with AA, 125% with BA, 150% with LH.

For more miles, CDG-GRU-BSB-REC-FOR-GRU-CDG is bookable for 1111€. This totals more than 15,000 miles, though the domestic flights book into W, which only earns 110% with Alaska (125% with AA, 110% with BA, still 150% with LH)