I know I can't say I'm a 50+ being only 48 but I bought my bike Feb. 25th & today we rode to Estes Park & I hit 2000 miles.
For some of the older riders that have ridden a lot I know that isn't many miles but for someone that this is there first year of riding since a teenager I am happy with it.
Last year at this time I was riding my hybrid & I thought 25 miles was a big ride, in fact my longest ride was 62 miles & that about killed me.
Now I've done one century, have another one planned Aug. 2nd & don't see any slowing down in the future.
I did join a great bike club (most are around my age) & we have all kinds of fun riding & that has really helped.
For those that are just starting out the best thing I can say is; JUST RIDE and have fun, it seems hard at first but it does get easier.