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Motorcycle and car loop from Saint-Etienne

From Saint-Etienne (Auvergne-Rhône-Alpes) we calculate the twistiest round trip in three lengths, for motorcycle and car. It runs over paved country roads without motorways. Every figure comes from the calculated route.

Ride this loop in the app See map and curves

The app calculates a loop from your location with the same method.

Reverse: the same route backwards. Curves swap sides, the radii stay.

Kilometres
130.9km
Curves
334
Climbing
1692m
Median radius
75m
Curves per 100 km
197.9
Map of the 131 km round trip from Saint-Etienne Saint-Etienne Saint-Just-Saint-Rambert Firminy Saint-Genest-Malifaux Saint-Maurice-en-Gourgois Saint-Jean-Soleymieux Saint-Bonnet-le-Château Rozier-Côtes-d'Aurec Jonzieux Villars Andrézieux-Bouthéon Sury-le-Comtal Saint-Romain-le-Puy Saint-Jean-Bonnefonds Start and finish

Tap a dot on the map for its radius and road.

Radius explorer

Move the cursor over a bar. The curves of that class light up on the map, with their km position.

Tightest radius per curve

71 curves sit at junctions and are left out of these figures, for example turns with a small radius.

Curve character

Of 130.9 km, 48.8 km run through curves. The rest is straight or a junction turn.

Tight
0.7 km, 0.6 %
radius under 60 m
Medium
22.6 km, 17.4 %
60 to 180 m
Wide
25.5 km, 19.6 %
180 to 400 m
Straights and junctions
81.5 km, 62.5 %

Key figures of the route

Tightest curve
At km 88.2 on M 3: radius 17 m, right.
Longest curve passage
25 curves over 6.0 km, from km 42.9 on D 5.
Densest curve stretch
37 curves over 10 km, from km 41.5. The quieter kilometres come before.
Longest climb
22.0 km with 550 m of ascent, from km 91.2 on Rue du Velay. Average gradient 2.5 %.

Elevation profile

From 371 m to 1063 m. 1692 m up, 1684 m down.

Drag a finger or the cursor along the profile. The map shows the spot.

High: km 2.9: 599 m Low: km 8.1: 572 m Low: km 52.0: 757 m Low: km 68.2: 805 m High: km 117.9: 1063 m Low: km 130.4: 526 m

Turning points

  • High km 2.9: 599 m
  • Low km 8.1: 572 m
  • Low km 52.0: 757 m
  • Low km 68.2: 805 m
  • High km 117.9: 1063 m
  • Low km 130.4: 526 m

Compared with the standard loop

The reference is the fastest round trip with the same start, heading and circle radius.

Compared with the standard loop Twisty loop Standard loop
Kilometres130.9128.2
Curves259149
Curves per 100 km197.9116.3
Motorway0.0 km6.6 km

1.7 times as many curves per 100 km as the standard loop.

Among the cities

Rank 20 of 75 cities in France. Median 134.9 curves per 100 km, Saint-Etienne sits at 187.7.

Similar cities

All lengths from Saint-Etienne

Every length in both directions. The curve column shows the count away from junctions first, then the total.

Length Direction Kilometres Curves Curves per 100 km Median radius Climbing
60 km Outbound 65.5 km 120 / 168 183.3 82 m 1088 m
60 km Reverse 65.5 km 122 / 167 186.4 84 m 1086 m
120 km Outbound 130.9 km 259 / 330 197.9 74 m 1679 m
120 km Reverse 130.9 km 259 / 334 197.9 75 m 1692 m
200 km Outbound 200.6 km 365 / 451 182.0 78 m 2716 m
200 km Reverse 200.6 km 361 / 447 180.0 76 m 2703 m

Every curve with its position

259 curves away from junctions, with km position, tightest radius and road.

km Radius Road
0.326 mRue Michelet
0.887 mCours Hippolyte Sauzea
3.855 mRue Gutenberg
4.380 mN 88
4.636 mRue Granby
5.7164 mD 1082
6.1114 mD 1082
6.4163 mD 1082
6.9137 mD 1082
7.2115 mD 1082
7.545 mD 1082
7.645 mD 1082
7.845 mD 1082
8.041 mD 1082
8.997 mD 1082
9.062 mD 1082
9.5135 mD 1082
9.6100 mD 1082
9.7120 mD 1082
11.389 mD 501
11.6197 mD 501
12.398 mD 501
12.6127 mD 501
12.8141 mD 501
14.1102 mD 501
14.770 mD 501
15.057 mD 501
15.150 mD 501
15.255 mD 501
15.482 mD 501
16.053 mD 501
16.633 mRue du Velay
16.947 mRue du Velay
17.480 mRue du Velay
17.873 mRue du Velay
18.359 mRue du Velay
18.684 mRue du Velay
18.892 mRue du Velay
19.2102 mRue du Velay
19.782 mRue du Velay
20.186 mRue du Velay
21.473 mRue du Velay
21.673 mRue du Velay
21.8120 mRue du Velay
22.4200 mRue du Velay
22.856 mRue du Velay
23.053 mRue du Velay
23.8156 mRue du Velay
24.360 mRue du Velay
24.442 mRue du Velay
25.4124 mRoute de Jonzieux
25.797 mRoute de Jonzieux
27.6166 mD 500
28.4127 mD 500
28.8136 mD 500
29.2114 mD 500
29.693 mD 500
29.8137 mD 500
30.0115 mD 500
30.5260 mD 500
30.9138 mD 500
31.1123 mD 500
31.781 mD 500
32.083 mD 500
32.284 mD 500
32.387 mD 500
32.571 mD 500
32.779 mD 500
32.879 mD 500
33.057 mD 500
33.296 mD 500
39.7119 mAvenue Roger Salengro
41.057 mM 3
41.284 mM 3
41.439 mM 3
41.719 mM 3
41.874 mM 3
42.028 mM 3
42.266 mM 3
42.454 mM 3
42.518 mM 3
42.657 mM 3
43.048 mM 3
43.247 mM 3
43.452 mM 3
43.651 mM 3
43.638 mM 3
43.856 mM 3
44.041 mM 3
44.228 mM 3
44.627 mM 3
44.824 mM 3
44.924 mM 3
45.142 mM 3
45.4134 mM 3
46.4177 mM 3
47.857 mM 3
48.7145 mD 104
49.178 mD 104
49.573 mD 104
50.4110 mD 104
51.285 mD 104
53.2124 mD 104
53.3124 mD 104
53.779 mD 104
53.9109 mD 104
55.1108 mD 104
55.470 mD 104
55.895 mD 104
56.1101 mD 104
57.492 mD 104
57.691 mD 104
58.043 mD 104
58.452 mD 104
58.7122 mD 104
58.8101 mD 104
59.2113 mD 104
60.350 m
60.8110 mChemin des Patureaux
61.074 mChemin des Patureaux
61.363 mChemin des Patureaux
61.447 mChemin des Patureaux
61.447 mChemin des Patureaux
61.745 m
62.150 m
62.250 m
62.376 m
62.874 m
62.948 m
63.052 m
63.445 m
63.749 mChemin des Patureaux
63.849 mChemin des Patureaux
63.955 mChemin des Patureaux
64.075 mChemin des Patureaux
64.289 mChemin des Patureaux
64.653 m
65.550 mD 104
65.776 mD 104
65.868 mD 104
66.461 mD 104
66.679 mD 104
67.0125 mD 104
67.2116 mD 104
68.485 mD 14
69.478 mD 14
69.678 mD 14
69.734 mD 14
69.834 mD 14
70.047 mD 14
70.368 mD 14
70.768 mD 14
70.9115 mD 14
71.977 mD 14
72.280 mD 14
72.354 mD 14
72.547 mD 14
72.867 mD 14
73.154 mD 14
73.2132 mD 14
73.460 mD 14
73.642 mD 14
73.742 mD 14
73.857 mD 14
74.093 mD 14
74.060 mD 14
74.6109 mD 498
76.467 mD 498
76.680 mD 498
76.9134 mD 498
77.5200 mD 498
78.1112 mD 498
78.7129 mD 498
79.194 mD 5
79.555 mD 5
79.732 mD 5
79.841 mD 5
80.041 mD 5
80.151 mD 5
80.6110 mD 5
80.780 mD 5
80.980 mD 5
81.246 mD 5
82.070 mD 5
82.349 mD 5
82.568 mD 5
82.668 mD 5
82.852 mD 5
82.948 mD 5
83.180 mD 5
83.370 mD 5
83.672 mD 5
84.077 mD 5
84.247 mD 5
84.454 mD 5
84.8170 mD 5
84.963 mD 5
85.256 mD 5
85.366 mD 5
85.476 mD 5
85.778 mD 5
85.968 mD 5
86.277 mD 5
86.6105 mD 5
87.067 mD 5
87.537 mD 5
87.867 mD 5
88.454 mD 5
88.877 mD 5
89.169 mRoute Départementale 5
89.487 mRoute Départementale 5
89.794 mRoute Départementale 5
90.1100 mRoute Départementale 5
90.6125 mRoute Départementale 5
91.0172 mRoute Départementale 5
92.4139 mRoute Départementale 5
93.1202 mRoute Départementale 5
93.5160 mRoute Départementale 5
95.381 mChemin de Bonnaire
95.878 mChemin de Bonnaire
95.971 mChemin de Bonnaire
96.171 mChemin de Bonnaire
96.388 mChemin de Bonnaire
98.064 mD 102
98.258 mD 102
98.457 mD 102
98.652 mD 102
98.770 mD 102
98.874 mD 102
100.075 mD 102
100.171 mD 102
100.3249 mD 102
100.997 mD 102
101.078 mD 102
101.736 mD 102
101.854 mD 102
102.760 mD 102
102.860 mD 102
105.1308 mD 498
108.223 mD 102
108.977 mD 102
109.460 mD 102
112.955 mBoulevard de la Libération
113.0102 mBoulevard de la Libération
115.483 mRoute du Chasseur
115.8149 mRoute du Chasseur
116.2158 mRoute du Chasseur
117.0130 mRoute du Chasseur
117.9151 mRoute du Chasseur
118.4173 mRoute du Chasseur
120.0129 mRoute du Chasseur
120.5131 mRoute du Chasseur
120.9110 mRoute du Chasseur
127.4136 m
128.2122 mBoulevard Maréchal Franchet d'Espèrey
128.973 mBoulevard Maréchal Franchet d'Espèrey
129.273 mBoulevard Maréchal Franchet d'Espèrey
129.754 mRue Tarentaize
130.136 mAvenue du Président Émile Loubet

How it was measured

  • Route: a round trip from Saint-Etienne, calculated on road data from 3 Jul 2026. Of several possible loops of the same length we show the one with the most rideable curves. Motorways are excluded.
  • Vehicle: The route is calculated for a motorcycle and runs on paved roads. A car can drive it too. On narrow stretches a car route can differ in detail.
  • Curve: a turn in one direction of at least 35 degrees. The DriveBattle app counts the same way.
  • Radius: the tightest curve radius inside the curve. Turns at junctions are flagged and do not count towards radius, tightest curve or passage.
  • Elevation: ground height along the route, smoothed over about 450 m. A climb counts from a 5 m height difference.
  • Calculated on 5 Oct 2026. The figures describe this route. The state of the road on the day you ride can differ.

Calculated on 5 Oct 2026

Questions about the round trip

How long is the round trip from Saint-Etienne?

There are three lengths: 60, 120, 200 km. The calculated routes measure 65.5, 130.9, 200.6 km.

Can I drive the round trip by car?

Yes. The route runs over paved country roads without motorways and can be driven by car and motorcycle. It is calculated for a motorcycle, so on very narrow stretches a car route can differ in detail.

How many curves does the round trip from Saint-Etienne have?

On 120 km we count 330 curves, 259 of them away from junctions. That is 197.9 free curves per 100 km.

How tight is the tightest curve?

On 120 km the tightest radius is 18 m, at km 42.5. The median radius of all curves is 74 m.

How much climbing does the route have?

On 120 km it is 1679 m of ascent. The highest point is 1063 m, the lowest 371 m.

Can I ride this round trip with the app?

Yes. The round-trip generator in the DriveBattle app calculates loops from your location with the same method.

Get it on Google Play

The round-trip generator is part of Premium. During the beta it is open to everyone.

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