One thing I've taken away from the Tour is that age doesn't really matter in the scheme of things. Riders' spanned all ages and generally got on well with each other.
There are a few main groups of riders, and obviously, like any attempt to categorise the natural world, it's an imperfect reflection of reality. Some riders fall into more than one group but for the sake of simplicty, I've omitted the rider-group matrix for now. I've borrowed some of the groups from Leah's article on the Tour D'Afrique. I haven't included everyone in here - not because some people are more interesting than others but a lack of motivation.
The Racers
Bearded Australian
Riding one of the strangest bikes on the tour (but probably the perfect choice) in a questionable off-yellow colour, he also sported one of the most epic beards of the trip (which seemingly did nothing to slow him down).
Windbreaker
WIth an enviable chest span, riding in a paceline with rider made life much easier.
Powerhouse
One of the shortest riders, riding one of the heaviest bikes and also damn quick!
Mr. & Mrs. Organised
Possibly the best prepared two riders and the most harmonious couple on the trip. Always helpful and quick too.
Mountain Biker
Another Brit and a superb technical cyclist, riding a Stumpjumper.
Mr. Motivation
Using the Tour to train for an even more ridiculous cycling event, he would often ride double the daily distance by reaching camp, turning around and continuing.
Business Class
Business class were a group of middle aged riders who have a taste for the finer things in life. They were suspected many a time of having more lockers than the mandatory standard allocation.
Younglings
(All riders younger than me.)
The Promise
At this stage in his journey, he was a hardened traveller and was always happy to share his expertise. A fast rider on a heavy bike, he struggled to race consistently but eventually got his stage victory. Superb photographer too.
Jack Of Many Trades
An entrepeneurial rider(?) who took to hitchhiking each day in lieu of riding, he found several innovative ways to make a bit of extra money.
Smiley
Possibly the most optimistic rider ever, never once seen without a smile on her face.
North Americans
Loud Cannuck
Stereotypical loud American and for a lot of the early part of the trip, the voice that would resonate through my thin tent walls and wake me up early in the morning.
The Former Army Engineer
Also a loud Canadian.
Vegan Dan
The only vegan rider and possibly one of the most dedicated riders, regularly rolling into camp late into the day. Always breaking spokes.
The Bike Messenger
A New York City bike messenger with a taste for punk rock. Owner of the infamous beard hat.
Artist
The designer of my tattoo and an unbelievable sketch artist, this guy tracked a package for half the trip only not to receive it.
Twentysomethings
Ms. Marathon
Holding a world record for running marathons, she was one of two riders crazy enough to run on rest days (as if the cycling wasn't exercise enough).
Livestrong
Passing out yellow Livestrong wristbands across Africa, a first time cyclist with the coolest green rims on the tour.
Token Irish Guy
Sporting cycling lycra of questionable modesty, a first time cyclist.
German
Ruthlessly efficient and one of the few riders with both matching and colour coded duffle bags.