Keep up the good work.
I too recently started cycling for fitness/ weight loss and I'm loving it, at the start 10 miles was daunting but already (after just a couple of months) 20 is a sensible option for a Sunday morning.
Recovery time is down from 36 hours to about 10 minutes too.
Good stuff. I'm sure you can do 15 or 20. Next week, how about having a 2 minute stop for a drink, see how you feel and go round again? If it takes you more than a day to recover, back off a bit, if not then carry on.
well done for starting to cycle, it does get addictive after a while lol.
i started on a mtb doing 6 miles to work, avg speed was 10-12 mph, but now i have a road bike and avg speed is now between 15-19mph depending on headwind.
there is agreat satisfaction in cycling, passing all the car drivers just sat in their tin box's while you just amble pass them!!!