This is a great little 22 mile mountain biking route from Inveruglas, Loch Lomond. The route shown in the GPX track below includes a short extension up to the Sloy Dam which is well worth a look.
The route is well maintained throughout and mostly gravel with some tarmac sections - generally a route for all abilities and the wide and quiet nature of the route means it is perfect for families. Similarly, although the full route is 22 miles, this can easily be shortened as necessary - for example just limited to cycling to the dam and back.
Although the gradients are generally very manageable in terms of steepness the route does gain a fair amount of height in parts and stunning views back down towards Loch Lomond are the reward for your efforts.
The route starts from the Inveruglas visit centre, right on the banks of Loch Lomond. This centre includes a Cafe (Cafe Lochan) and is open 7 days week from 08:30am - 4:30pm. There is usually plenty of parking available in the large car park even though this a busy stopping spot. The cafe is a lovely place for a pre- or post- ride coffee with a view and there is plenty of outdoor seating. There's good cafe food available including cakes, panini and sandwiches.
The route starts along the footpath alongside the fairly busy A82, past the imposing Sloy Power Station before quickly turning off and up into the hills. The route sticks to fairly low ground below Ben Vorlich and Ben Vane - both of which are seen from the circuit. For those wishing to climb either of these Munros on foot, cycling to the base of the climb is a good way to save some time from the ascent.
The roads used are well maintained as there are required for vehicles from the power station and dam, and some forestry vehicles, but for most of the year and especially at weekends the roads are quiet except for walkers.
Completing the full circuit as shown requires a short section alongside the A83 in Succoth, again a well maintained and wide footpath is available to avoid the traffic on this short section.
Overall a highly recommended, safe, mountain biking cycle route for all abilities with some rewarding views and a cafe on the banks of Loch Lomond at the start/finish point - what more could you ask for?