Out riding at the weekend, ended up hooking up with a few guys and was utterly dismayed that my fitness is actually worse than a three legged asthmatic donkey!
I've always known that I'll never be a xc whippet and in all fairness I'm not trying to be but I would like to be able to ride further than 16 miles (yes that is correct 16) at an average pace above that of snails in treacle without feeling like my legs are going to fall off. (My only excuse being Sunday was the third time out on the bike in about 6 months). Also I do ride a dialed alpine, single ring up front with 150 mm forks and super tacky tyres so its not the quickest thing on peddally sections.
So my question is what do people think is the best way to improve my endurance / fitness? I know I need to increase my riding duration but living in West London and working lots means time is limited and getting to any trails mid week is a faff so I figure my options are:
a) buy a road bike and start riding after work.
b) buy slick tyres for my mtb and slog away with that and do swaps at the weekend
c) Admit defeat and go from a single front to a double till my fitness improves.
Assuming I go down route a or b is there anything specific worth trying or should I just ride increasing my miles as I go?