
Road · United Kingdom
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A flat 110 km road cycling route from Bonhill, West Dunbartonshire to Ayr through Renton, Bowling and Garscadden, with 203 m of climbing. 56% is on cycle paths or roads with a cycle lane.
Starting in Bonhill, west of Alexandria, the route heads south-east passing through several towns including Dumbarton, Clydebank and Glasgow. It follows the Dalry and North Johnstone rail trail for 8.2 km and the Forth and Clyde Canal Towpath for 4.3 km, using mostly cycle paths which account for 58% of the route. There are 3.7 km on main roads and 4.8 km on main roads without cycle lanes, including 8.4 km on 80 km/h or faster roads.
The profile is mostly flat with 97% of the route level, a total elevation gain of 203 m, and a highest point of 75 m near km 67. The steepest 500 m stretch has a 3.6% gradient. The route passes near Dumbowie (at 8.1 km) and the Hill of Dun (207 m high, near 11.4 km). There is a longest descent from km 75.9 over 1.5 km dropping 22 m.
Food, drink and bike facilities are well provided early on with cafés like The Park Pit Stop at 5.1 km and Paton's Place at 12.1 km. There are long stretches with no café or shop for 11 km between km 63.2 and 74.2. Bailout points with railway stations are frequent, including Dumbarton Central (km 5.8), Clydebank (18.5), Dumbreck (29.7), Paisley Canal (40.4), and Irvine (81.1). Amenities at the start in Bonhill include a station and convenience stores; at the finish in Ayr there are several cafés and pubs.
Much of the route is separated from traffic: 56% is on cycle paths or roads with a cycle lane.
No stretch is longer than 15 km without a café, shop or water. Along the route: 383 cafés and restaurants, 119 shops, 7 water points, 17 petrol stations, 22 public toilets and 31 bike shops.