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A wheeled terrain board upon which a rider stands to traverse a terrain surface includes a deck mounted to a frame, a pair of trucks disposed at opposing ends of the frame, and a pair of wheels supported by each of the trucks. The length of the frame is adjustable to allow the terrain board to be ad

A wheeled terrain board upon which a rider stands to traverse a terrain surface includes a deck mounted to a frame, a pair of trucks disposed at opposing ends of the frame, and a pair of wheels supported by each of the trucks. The length of the frame is adjustable to allow the terrain board to be adapted to various terrain surfaces and riding styles. The frame includes a central portion and front and rear end portions. Sliding at least one of the front and rear end portions relative to the central portion adjusts the length of the terrain board, and may be used to adjust the position of the deck relative to the trucks. Locking mechanisms may be disposed between the central portion and the front and rear end portions to secure the frame in any one of a plurality of lengths. The adjustable length frame may be used with any commercially available deck, truck, and wheels, which gives the rider more flexibility in configuring the terrain board to a particular riding style or terrain surface.

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What is claimed is: 1. A wheeled terrain board upon which a rider stands to traverse a terrain surface, the wheeled terrain board comprising: a frame including: an elongated central portion, an elongated front end portion extending outwardly from and along the longitudinal axis of the central porti

What is claimed is: 1. A wheeled terrain board upon which a rider stands to traverse a terrain surface, the wheeled terrain board comprising: a frame including: an elongated central portion, an elongated front end portion extending outwardly from and along the longitudinal axis of the central portion to substantially the distal end of the front end portion, the front end portion and the central portion being telescopically received one within the other, and an elongated rear end portion extending outwardly from and along the longitudinal axis of the central portion to substantially the distal end of the rear end portion, the rear end portion and the central portion being telescopically received one within the other, at least one wheel attached to the front end portion proximate to the distal end thereof, at least one wheel attached to the rear end portion proximate to the distal end thereof, the front end portion and the rear end portion of the frame being independently adjustable relative to the central portion so that by moving either one or both of the front and rear end portions along the longitudinal axis of the central portion, the distance between the wheels attached to the front and rear end portions can be readily shortened for quicker turning or lengthened for greater stability, a first locking mechanisms disposed between the central portion and the front end portion, the front end portion being releasably secured in the longitudinal direction relative to the central portion by the first locking mechanism, a second locking mechanism disposed between the central portion and the rear end portion, the rear end portion being releasably secured in the longitudinal direction relative to the central portion by the second locking mechanism, and a deck mounted to the central portion and having a fixed length. 2. The wheeled terrain board of claim 1 wherein the length of the frame is adjustable to a plurality of lengths between a minimum length and length greater than about 1.5 times the minimum length. 3. The wheeled terrain board of claim 1, wherein at least one of the first and second locking mechanisms is a friction coupling comprising, in combination: a sleeve threaded to the central portion and a resilient locking ring disposed between the sleeve and the front or rear end portion of the frame, whereby tightening the sleeve compresses the locking ring and prevents sliding of the front or rear end portion relative to the central portion. 4. The wheeled terrain board of claim 1, wherein at least one of the first and second locking mechanisms is a ball locking mechanism comprising, in combination: a sleeve disposed around the central portion, at least one ball retained within an opening in the central portion for locking the mechanism, the sleeve having an opening for receiving the ball in the unlocked condition. 5. A wheeled terrain board upon which a rider stands to traverse a terrain surface, the wheeled terrain board comprising: a frame including: an elongated tubular central portion having axially aligned, open forward and rearward ends, an elongated, cylindrical front end portion telescopically mounted within the open forward end of the tubular central portion, the cylindrical front end portion extending outwardly from the tubular central portion along its longitudinal axis substantially to the distal end of the front end portion, an elongated, cylindrical rear end portion telescopically mounted within the open rearward end of the tubular central portion, the cylindrical rear end portion extending outwardly from the tubular central portion along its longitudinal axis substantially to the distal end of the rear end portion, a first truck including wheels mounted to the front end portion of the frame proximate the distal end thereof, a second truck including wheels mounted to the rear end portion of the frame proximate the distal end thereof, the front end portion and the rear end portion of the frame being independently adjustable relative to the central portion so that by moving either one or both of the front and rear end portions along the longitudinal axis of the central portion, the distance between the wheels on the first and second trucks can be shortened for quicker turning or lengthened for greater stability, a first and second plurality of spaced apart holes disposed within the tubular central portion, a third plurality of holes disposed within the cylindrical front end portion, at least one of the third plurality of holes aligning with a hole in the first plurality of holes, a first locking pin extending through the aligned holes in the first and third plurality of holes releasably securing the cylindrical front end portion to the tubular central portion, a fourth plurality of spaced apart holes disposed within the cylindrical rear end portion, at least one of the fourth plurality of holes aligning with a hole in the second plurality of holes, a second locking pin extending through the aligned holes in the second and fourth plurality of holes releasably securing the cylindrical rear end portion to the tubular central portion, and a deck mounted to the tubular central portion and having a fixed length. 6. A method for assembling a wheeled terrain board for use on a terrain surface comprising: providing a frame including an elongated central portion, an elongated front end portion and an elongated rear end portion, telescopically mounting the front end portion and the central portion one within the other such that the front end portion extends outwardly from the central portion along its longitudinal axis to substantially a distal end of the front end portion, telescopically mounting the rear end portion and the central portion one within the other such that the rear end portion extends outwardly from the central portion along its longitudinal axis to substantially a distal end of the rear end portion, attaching a wheel proximate to the distal ends of both the front and rear end portions, adjusting the length to which at least one of the front end portion and the rear end portion extend longitudinally beyond the central portion such that the frame is set to a predetermined length between the wheels attached to both distal ends thereof, wherein the minimal distance between the distal ends provides for quicker turning of the terrain board and wherein the maximum distance between the distal ends provides for greater stability, releasably locking the at least one of the front end portion and the rear end portion to secure the same to the central portion, and providing a deck for mounting to the central portion, the deck having a fixed length.