What size are current bikes?

I would look for a road bike not a mountain bike especially for long day trips and touring. would be better than MTB or hybrid for efficiency and comfort
best if there are attachments for racks, but that can be worked around

the C&V for sale section is your friend....best quality and value, even if shipping is needed


this would likely work, put 28mm tires on and at your size you should be comfy

1982 PRO Miyata, 50cm

this also would likely work would need building but again C&V for sale is your friend
frame set 48 cm 1984 Basso Gap frameset, 48 cm, Columbus tubing, headset & BB Campagnolo