Always use the best quality maps you can find. Satellite images are even better, so long as they have a built-in scale.
If using a scanner, try to use at least 300 dpi resolution; if downloading from the Internet, visit the USGS or UK Ordnance Survey sites first. The USGS site has excellent satellite images down to 1 metre resolution.
When calibrating, zoom in as far as possible before placing the separate end-points of the reference distance. Fine-tune the two markers afterwards.
Work at a higher magnification rather than a lower one. When "nudging" data points, use the very highest magnification your PC will permit. This is where AccuRoute2's fantastic accuracy comes from.
If you find your PC creates far too many data points to be able to "nudge" them all, change the "Throttle" setting on the Preferences menu to force your PC to work at a slower rate.
On straight parts of the route, use the new point-to-point tracing style like joining the dots; on more complex sections, zoom in and use the freehand trace.
If you can, take the path height into account: each time the path crosses a contour, nudge the closest data point exactly onto the contour and right click to fix its altitude.
The more carefully you trace the route in the first place, the quicker you'll get a decent result. However, you may find you have to throttle back your PC (see above) to prevent being overwhelmed with data points.

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