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Motorcycle and car loop from Grenoble

From Grenoble (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.

Kilometres
65.0km
Curves
210
Climbing
1305m
Median radius
58m
Curves per 100 km
238.4
Map of the 65 km round trip from Grenoble Grenoble Le Pont-de-Claix Fontaine Échirolles Sassenage Engins Lans-en-Vercors Seyssins Saint-Nizier-du-Moucherotte 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

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

Curve character

Of 65.0 km, 24.2 km run through curves. The rest is straight or a junction turn.

Tight
1.1 km, 1.7 %
radius under 60 m
Medium
12.4 km, 19.3 %
60 to 180 m
Wide
10.7 km, 16.6 %
180 to 400 m
Straights and junctions
40.2 km, 62.4 %

Key figures of the route

Tightest curve
At km 21.4 on D 106: radius 16 m, left.
Longest curve passage
22 curves over 4.2 km, from km 48.5 on D 531.
Densest curve stretch
46 curves over 10 km, from km 43.0. The quieter kilometres come before.
First free curve
At km 4.5. Before that, no curve away from junctions lies on the route.
Longest climb
12.5 km with 795 m of ascent, from km 12.9 on D 106. Average gradient 6.4 %.

Motorway share: 1.5 km

Elevation profile

From 205 m to 1188 m. 1305 m up, 1291 m down.

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

Low: km 31.6: 1054 m High: km 32.5: 1110 m Low: km 33.2: 1055 m High: km 33.8: 1096 m Low: km 46.5: 720 m High: km 47.7: 879 m

Turning points

  • Low km 31.6: 1054 m
  • High km 32.5: 1110 m
  • Low km 33.2: 1055 m
  • High km 33.8: 1096 m
  • Low km 46.5: 720 m
  • High km 47.7: 879 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
Kilometres65.070.9
Curves155222
Curves per 100 km238.4313.3
Motorway1.5 km0.0 km

Among the cities

Rank 13 of 75 cities in France. Median 134.9 curves per 100 km, Grenoble sits at 210.8.

Similar cities

All lengths from Grenoble

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 65.0 km 155 / 210 238.4 58 m 1305 m
60 km Reverse 65.0 km 157 / 208 241.4 60 m 1316 m
120 km Outbound 113.7 km 192 / 254 168.8 63 m 1601 m
120 km Reverse 113.7 km 191 / 257 167.9 64 m 1605 m
200 km Outbound 206.4 km 465 / 534 225.3 59 m 3520 m
200 km Reverse 206.4 km 459 / 525 222.4 61 m 3538 m

Every curve with its position

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

km Radius Road
4.569 mRue de Comboire
4.861 mRue de Comboire
5.274 mRue de Comboire
5.557 mRue de Comboire
5.756 mRue de Comboire
8.162 mAvenue de Belledonne
8.852 mAvenue de Belledonne
8.852 mAvenue de Belledonne
8.954 mAvenue de Belledonne
9.170 mAvenue de Belledonne
11.6131 mD 106d
12.649 mRue de la Lune
12.849 mRue de la Lune
12.961 mRue de la Lune
13.155 mRue de la Lune
13.368 mRue de la Lune
13.8101 mD 106
14.330 mD 106
14.530 mD 106
14.659 mD 106
14.840 mD 106
14.949 mD 106
15.354 mD 106
15.360 mD 106
16.358 mRoute de Saint-Nizier
16.566 mRoute de Saint-Nizier
16.828 mRoute de Saint-Nizier
17.066 mRoute de Saint-Nizier
17.298 mRoute de Saint-Nizier
17.458 mRoute de Saint-Nizier
17.469 mRoute de Saint-Nizier
17.928 mRoute de Saint-Nizier
18.128 mRoute de Saint-Nizier
18.524 mRoute de Saint-Nizier
18.696 mRoute de Saint-Nizier
19.174 mRoute de Saint-Nizier
19.274 mRoute de Saint-Nizier
19.457 mRoute de Saint-Nizier
19.555 mRoute de Saint-Nizier
21.416 mD 106
22.1171 mD 106
22.451 mD 106
22.667 mD 106
22.974 mD 106
23.422 mD 106
23.871 mD 106
23.992 mD 106
24.1114 mD 106
25.952 mD 106
26.054 mD 106
26.352 mD 106
26.451 mD 106
26.5112 mD 106
26.658 mD 106
26.977 mD 106
27.376 mD 106
27.539 mD 106
27.638 mD 106
27.839 mD 106
27.939 mD 106
28.171 mD 106
28.465 mD 106
29.6113 mD 106
29.889 mD 106
29.972 mD 106
30.452 mD 106
30.650 mD 106
31.172 m
31.695 m
31.958 m
32.769 m
33.098 m
33.573 m
33.855 mRoute de Saint-Nizier
34.151 mRoute de Saint-Nizier
34.271 mRoute de Saint-Nizier
34.456 mRoute de Saint-Nizier
34.556 mRoute de Saint-Nizier
34.769 mRoute de Saint-Nizier
34.953 mRoute de Saint-Nizier
35.068 mRoute de Saint-Nizier
35.256 mRoute de Saint-Nizier
35.649 mRoute de Saint-Nizier
35.749 mRoute de Saint-Nizier
35.874 mRoute de Saint-Nizier
35.977 mRoute de Saint-Nizier
36.352 mChemin des Drevets
36.870 mChemin des Drevets
37.155 mChemin des Drevets
38.677 mD 531
38.763 mD 531
38.8123 mD 531
39.370 mD 531
39.475 mD 531
39.7113 mD 531
40.1184 mD 531
40.782 mD 531
42.2136 mD 531
43.1119 mD 531
43.339 mD 531
43.539 mD 531
43.664 mD 531
43.963 mD 531
44.061 mD 531
44.135 mD 531
44.235 mD 531
44.336 mD 531
44.436 mD 531
44.758 mD 531
44.851 mD 531
45.264 mD 531
45.464 mD 531
45.654 mD 531
46.590 mRoute de Laliarey
46.751 mRoute de Laliarey
46.851 mRoute de Laliarey
47.418 m
47.618 m
47.618 m
47.918 mRoute de Laliarey
47.918 mRoute de Laliarey
48.029 mRoute de Laliarey
48.571 mRoute de Laliarey
48.650 mRoute de Laliarey
48.750 mRoute de Laliarey
48.961 mRoute de Laliarey
49.3135 mD 531
49.581 mD 531
49.660 mD 531
49.760 mD 531
49.917 mD 531
50.019 mD 531
50.256 mD 531
50.353 mD 531
50.456 mD 531
50.559 mD 531
50.7100 mD 531
50.819 mD 531
51.263 mD 531
51.6129 mD 531
51.784 mD 531
52.074 mD 531
52.280 mD 531
52.687 mD 531
53.621 mD 531
54.719 mD 531
55.077 mD 531
55.146 mD 531
55.453 mD 531
56.2176 mD 531
56.421 mD 531
56.621 mD 531
56.996 mD 531
57.2111 mD 531
63.156 mD 1532

How it was measured

  • Route: a round trip from Grenoble, 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 Grenoble?

There are three lengths: 60, 120, 200 km. The calculated routes measure 65.0, 113.7, 206.4 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 Grenoble have?

On 120 km we count 254 curves, 192 of them away from junctions. That is 168.8 free curves per 100 km.

How tight is the tightest curve?

On 120 km the tightest radius is 18 m, at km 42.1. The median radius of all curves is 63 m.

How much climbing does the route have?

On 120 km it is 1601 m of ascent. The highest point is 1217 m, the lowest 204 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.

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

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