“This section is quite flat mostly following the railway through the River Spey valley.
— Lost Justpastnowhere
The Speyside Way is a well marked long distance trail that roughly follows the course of the River Spey for about 84 miles from Buckie on the northern coast of Scotland to Newtonmore (the segment Kincraig-Newtonmore is not yet completed as of 2017). It's a mostly gentle path with easy grades and the southern half passes through the Cairngorms National Park featuring views of the Grampian Mountains. There are a number of Scotch distilleries on or near the route that may be visited.
The Aviemore to Kincraig segment mostly follows the active railway line and as a result it's very flat except for one or two short climbs. Much of the route is over crushed gravel, although the southern portion uses some earthen doubletracks. Much of this segment passes through pastoral farmland, but there are sections of birch forest and views of the River Spey as you near Kincraig. This segment passes through the Cairngorms National Park and is nestled within the Grampian Mountains.
In Kincraig, you can pick up the next segment of the Speyside Way (once it is completed) or take the more challenging East Highland Way all the way to Fort William.