Hi,
OTOH something like the $150 GMC Denali would
be fine for commuting and most of the training,
and stuff most cheap MTB's used for a triathlon.
http://www.walmart.com/ip/GMC-Denali...edium/16203487
And end up costing less than updating a basic MTB.
Bike snobs seem to hate it with unreserved passion,
(which actually makes me like it a lot even more

),
but IMO its a very nice bike (and unusual*) for $150.
Good range of sizes, even a small ladies and 24" junior.
Very sensible choice of in reality practical tyre width.
Set it up properly, fit a rack and fenders, if either are
needed, eyelets are provided. Possibly also toeclips,
the pedals will take take half or full toeclips.
Spend the rest of the money on a nice used racing bike from CL.
rgds, sreten.
* The price point is met by a combination of using a lot of older
technology and cheaper stuff from MTB's. If it was available in
the UK I would of bought it instead of the budget bike I have.
GMC Denali 700c 20" Men's Road Bike:- Medium bicycle fits riders 5'2"-5'8" with a stand over of 27"-30"
- Riding style: road bike
- Frame: Aluminum 7005 straight gauge
- Handlebar: Maesbend W: 430mm D:22.0mm
- Gearing: 21-speed
- Shifters: Shimano Revo SIS L2/R7 - very unusual, from MTB's
- Front Derailleur: Shimano FD-TZ 31 Index
- Rear Derailleur: Shimano RD-TZ30GS 7SPD
- Bike saddle: Cionelli Black - apparently it is not junk
- Seat post: HL Aluminum Micro Adjust 27.2 x 300 mm
- Brakes: Promax 501A Alloy Caliper Brake - very basic
- Brake levers: Promax BL-250AP Aluminum - nice at the price
- Bicycle tires: 700 x 32c tires for smooth ride and low-rolling resistance
- a very good tyre width IMO for commuting and training
- Rims: Vitesse Alloy black 700CX14GX36H
- Pedals: VP-990S plastic body with steel cage - more likely alloy cage
- Fork: GMC Series 7000 steel
- Chain: KMC Z 51
- Crankset: Prowheel Alloy 335P6 28X38X48 170mm
- very MTB, chainwheels are very likely steel
- Rear freewheel is 14,16,18,20,22,24,28
- Stem: Aluminum black EXT:100mm 0D.
- Alloy calipers and alloy brake levers for high-performance cycling
- High-profile alloy Vitesse road bike racing rims
- Dimensions: 68"L x 18"W x 40"H
- Assembly required for the GMC Denali Bike
- Warranty: lifetime frame, 1-year parts