National Byway (SW Scotland)
The National Byway (SW Scotland) runs from Harelaw to Alloway over 5 stages: 347 km and 2,909 m of climbing in the UK. Every stage has a map, elevation profile, road facts and a GPX file.
Route at a glance
- Distance
- 347 km
- Climbing
- 2,909 m
- Stages
- 5
- Countries
- 1
- Average stage
- 69 km
- Longest stage
- 109.8 km
- Most climbing
- 705 m
- Riding time
- ~25 h
- Surface
- Paved
- Bike
- Road bike
- Best months
- May to Sep
- GPX
- Every stage + whole tour
- Start
- Harelaw
- Finish
- Alloway
Full route map
Itinerary: 5 stages
Average 69 km and 582 m a stage. Longest day: stage 1 (109.8 km). Most climbing: stage 4 (705 m). Shortest: stage 5 (36.5 km).
| Stage | Route | Country | Distance | Climbing | Surface | Difficulty | Time | GPX |
|---|---|---|---|---|---|---|---|---|
| 1 | Harelaw to Dumfries | UK | 109.8 km | 694 m | Paved | Hard | 7 h 51 min | GPX |
| 2 | Dumfries to Moniaive | UK | 66.1 km | 601 m | Paved | Moderate | 4 h 43 min | GPX |
| 3 | Moniaive to Newton Stewart | UK | 54.7 km | 533 m | Paved | Moderate | 3 h 54 min | GPX |
| 4 | Minnigaff to Girvan | UK | 80.1 km | 705 m | Paved | Hard | 5 h 43 min | GPX |
| 5 | Girvan to Alloway | UK | 36.5 km | 376 m | Paved | Moderate | 2 h 36 min | GPX |
How difficult is this tour?
347 km and 2,909 m of climbing over 5 stages: 69 km and 582 m a stage on average.
The longest day is stage 1, Harelaw to Dumfries (109.8 km); the most climbing is on stage 4, Minnigaff to Girvan (705 m); the shortest is stage 5, Girvan to Alloway (36.5 km).
At 69 km a day on average, it suits riders used to back-to-back days of 50–90 km.
Riders can go faster or slower than the documented itinerary: the same 347 km is 6 riding days at 60 km a day, 5 riding days at 80 km a day and 4 riding days at 100 km a day.
Surface and traffic
Paved: 98% of the route is mapped as paved, 1% as unpaved.
11 km (3%) is on cycle paths or roads with a cycle lane; 116 km (33%) is on main roads without one, and 150 km on roads with a limit of 80 km/h or more.
The longest stretch without a café, shop or water is 61 km, on stage 4.
Signed routes this tour follows
- National Byway (SW Scotland) - stages 1, 2, 3, 4, 5
Best time to ride
From ten years of weather at the stage towns, May to Sep are good for riding along the whole route.
Logistics
- 4 of 5 stage finishes have a hotel, guesthouse or campsite mapped within a short ride of the finish.
- The longest stretch without a café, shop or water on any stage is 61 km, on stage 4.
What it was actually like to ride
About this tour
This National Byway route in southwest Scotland stretches over 347 km across five stages, beginning in Harelaw and finishing in Alloway. The total ascent is 2,909 m, with each stage varying in distance and climbing challenges.
Stage 1 runs 109.8 km from Harelaw to Dumfries. It features several moderate climbs early on, the longest being 2.6 km at an average gradient of 2.9%, and reaches a height of 232 m. There are 22 water or food stops available.
Stage 2 covers 66.1 km from Dumfries to Moniaive and includes multiple climbs with a maximum gradient peak of 10%. This stage totals 601 m of elevation gain and also offers 22 food or water stops along the way.
Stage 3 is shorter at 54.7 km between Moniaive and Newton Stewart, with 533 m of climbing. It includes two longer climbs of approximately 5 km each, reaching a top height of 324 m. There are 4 food or water stops on this stage.
Stage 4 stretches 80.1 km from Minnigaff to Girvan, climbing 705 m, with the highest point at 391 m. It contains several climbs ranging from 2.1 to 5.3 km in length. Riders can find 6 water or food stops during this stage.
The final stage is the shortest at 36.5 km from Girvan to Alloway, with 376 m of elevation gain. It has four climbs with gradients up to 4.5% over 2.3 km, reaching a top height of 203 m. This stage provides 10 water or food stops.
There are no recorded temperatures or specific months for riding. All stages take place entirely within Great Britain without crossing any borders. Water and food stops are consistent, with fewer options in stage 3. The terrain varies from rolling climbs to moderately hilly sections.
Photos from the road
Stage 1 · Harelaw to Dumfries 
Stage 2 · Dumfries to Moniaive 
Stage 3 · Moniaive to Newton Stewart 
Stage 4 · Minnigaff to Girvan 
Stage 5 · Girvan to Alloway
Questions riders ask
How far is Harelaw to Alloway by bike?
347 km along this route, in 5 stages averaging 69 km.
How long does it take to cycle from Harelaw to Alloway?
Moving time is estimated at about 25 hours. At 60 km a day it is 6 days, 80 km a day it is 5 days and 100 km a day it is 4 days.
How much climbing is involved?
2,909 m in total. The most climbing in a day is 705 m on stage 4, Minnigaff to Girvan.
How difficult is the route?
At 69 km a day on average, it suits riders used to back-to-back days of 50–90 km. The longest day is 109.8 km.
Is it suitable for a road bike?
98% of the route is mapped as paved and 1% as gravel or unpaved. Based on that: road bike.
Is there a GPX file?
Yes. Every stage has its own GPX download, and the whole tour is available as one GPX file with a track per stage.
What is the best time of year?
From ten years of weather at the stage towns, May to Sep are good for riding along the whole route.