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Ain — road climbs measured by LiDAR

All 82 published climbs in Ain, ranked by their steepest 25 m and measured on IGN’s LiDAR HD 0.5 m laser surveys. Pages listed but not ranked follow the ranked rows, unnumbered.

Surface: · Caveated rows: (ranks stay the true ranks) · every published row is listed here — the toggles filter this page without hiding anything from the links above.

#	Climb	Department	Max 25 m	Length	Net rise	Overall	Surface	Evidence
1	Montée des Acacias	Ain	25.5%	811 m	120 m	14.8%	Paved	Good
2	Lane near Virieu-le-Petit	Ain	≈caveated25.4%	9805 m	956 m	9.8%	Paved	Good
3	Chemin des Dares	Ain	≈caveated24.9%	1039 m	58 m	5.5%	Paved	Good
4	Lane near La Caraveillère (45.8060, 5.7379)	Ain	≈caveated24.9%	441 m	61 m	13.8%	Paved	High
5	Route de Vaux	Ain	≈caveated24.4%	903 m	75 m	8.3%	Paved	Good
6	Chemin de la Perrolaz	Ain	24.3%	1432 m	115 m	8.0%	Paved	Good
7	Chemin de Morillon	Ain	≈caveated24.2%	416 m	40 m	9.6%	Paved	Good
8	Lane near Île Béard	Ain	≈caveated23.7%	555 m	40 m	7.2%	Paved	Good
9	Lane near La Caraveillère (45.8077, 5.7383)	Ain	23.4%	308 m	45 m	14.7%	Paved	High
10	Chemin de la Serraz	Ain	23.4%	1799 m	81 m	4.5%	Paved	Good
11	Montée de la Dame Blanche	Ain	≈caveated23.3%	1281 m	114 m	8.9%	Mixed surface	Good
12	Lane near Javornoz	Ain	≈caveated23.3%	1252 m	150 m	12.0%	Paved	Good
13	Chemin de la Burbande	Ain	23.2%	321 m	49 m	15.3%	Paved	Good
14	Lane near Crept	Ain	22.5%	1386 m	102 m	7.4%	Paved	Good
15	Montée du Roy	Ain	≈caveated22.4%	869 m	64 m	7.3%	Paved	Good
16	Montée du Roy	Ain	≈caveated22.3%	428 m	52 m	12.0%	Paved	Good
17	Chemin de la Ville Haute	Ain	22.0%	460 m	47 m	10.2%	Paved	High
18	Chemin de la Chapelle	Ain	21.9%	3637 m	248 m	6.8%	Paved	Good
19	Rue des Tours	Ain	21.8%	755 m	59 m	7.9%	Paved	Good
20	Lane near Parissieu	Ain	≈caveated21.7%	697 m	80 m	11.5%	Paved	Good
21	Chemin des Morènes	Ain	≈caveated21.6%	1908 m	78 m	4.1%	Paved	Good
22	Montée de Saint-Valérien	Ain	≈caveated21.6%	1983 m	167 m	8.4%	Paved	Good
23	Rue de Bramafan	Ain	≈caveated21.6%	577 m	62 m	10.7%	Paved	Good
24	Chemin du Réservoir	Ain	21.5%	302 m	50 m	16.7%	Paved	Good
25	Chemin sous le Molard	Ain	≈caveated21.3%	776 m	51 m	6.6%	Paved	Good
26	Cote de Parallie	Ain	≈caveated21.2%	616 m	60 m	9.7%	Paved	Good
27	Montée de la Grande Côte	Ain	21.1%	543 m	78 m	14.4%	Paved	Good
28	Lane near Cleyzieu	Ain	21.0%	1498 m	102 m	6.8%	Paved	High
29	Impasse des Jardiniers	Ain	21.0%	1068 m	109 m	10.2%	Mixed surface	Good
30	Route de Ouche	Ain	21.0%	1644 m	141 m	8.6%	Paved	Good
31	Route d'Hauteville	Ain	21.0%	424 m	47 m	11.2%	Paved	Good
32	Lane near Les Balmes	Ain	≈caveated20.9%	938 m	80 m	8.5%	Paved	Good
33	Chemin de Luisandre (Morgelas)	Ain	≈caveated20.8%	4142 m	409 m	9.9%	Paved	Needs confirmation
34	Rue de la Grand Vie	Ain	≈caveated20.8%	1264 m	107 m	8.5%	Paved	Good
35	Chemin de Champ Dernier	Ain	≈caveated20.7%	469 m	47 m	9.9%	Paved	Good
36	Lane near Le Tortoillet	Ain	≈caveated20.5%	888 m	66 m	7.4%	Mixed surface	Good
37	Route de Saint-Martin	Ain	≈caveated20.5%	1535 m	93 m	6.1%	Paved	Good
38	Rue du Tortoillet	Ain	≈caveated20.5%	441 m	37 m	8.3%	Paved	Good
39	Chemin des Gonettes	Ain	≈caveated20.5%	772 m	88 m	11.4%	Paved	Good
40	Montée du Château	Ain	≈caveated20.4%	1565 m	100 m	6.4%	Paved	Good
41	Lane near Caquet	Ain	≈caveated20.2%	1301 m	94 m	7.2%	Paved	Good
42	Lane near Hostiaz	Ain	≈caveated20.2%	1775 m	165 m	9.3%	Paved	Good
43	Chemin d'Arançon	Ain	≈caveated20.1%	1389 m	70 m	5.0%	Paved	Good
44	Lane near Lochieu	Ain	≈caveated20.0%	2332 m	184 m	7.9%	Paved	Good
45	Lane near Prémillieu	Ain	19.6%	9005 m	545 m	6.1%	Paved	Good
46	Chemin des Vignes	Ain	≈caveated16.5%	2629 m	274 m	10.4%	Paved	Good
47	Col du Petit Pertuis from Innimond	Ain	≈caveated16.2%	1962 m	153 m	7.8%	Paved	Good
48	Route de la Montagne (Val d'Enfer)	Ain	≈caveated16.1%	8633 m	502 m	5.8%	Paved	Good
49	Route du Colombier	Ain	≈caveated15.6%	14669 m	1187 m	8.1%	Paved	Good
50	Col du Grand Colombier from Lochieu	Ain	≈caveated15.4%	12533 m	866 m	6.9%	Paved	Good
51	Col de la Biche from Corbonod	Ain	15.1%	13237 m	935 m	7.1%	Paved	Good
52	Route du Grand Colombier	Ain	≈caveated14.7%	12019 m	949 m	7.9%	Paved	Good
53	Col du Grand Colombier from Culoz	Ain	≈caveated14.7%	17288 m	1237 m	7.2%	Paved	Good
54	Croix de Famban from Brénaz	Ain	≈caveated14.7%	8887 m	567 m	6.4%	Paved	Good
55	Lane near Sutrieu	Ain	≈caveated14.4%	6376 m	541 m	8.5%	Paved	Good
56	Col de Portes from Souclin	Ain	≈caveated14.2%	8715 m	508 m	5.8%	Paved	Needs confirmation
57	Col de Portes from Arandas	Ain	≈caveated13.0%	6928 m	467 m	6.7%	Paved	Good
58	Col de Cuvillat from Le Petit-Abergement	Ain	12.9%	4807 m	315 m	6.6%	Paved	Good
59	Col de Portes from Janvais	Ain	≈caveated12.8%	2254 m	163 m	7.2%	Paved	Good
60	Route de l'Épery	Ain	≈caveated12.7%	9103 m	543 m	6.0%	Paved	Good
61	Col de Cuvillat from Champdor	Ain	≈caveated12.6%	2830 m	196 m	6.9%	Paved	Good
62	Rue de Tenay	Ain	≈caveated12.5%	9679 m	585 m	6.0%	Paved	Good
63	Col de Cuvéry from Vouvray	Ain	≈caveated12.0%	9578 m	547 m	5.7%	Paved	Good
64	Col de la Faucille from Gex	Ain	10.7%	11062 m	662 m	6.0%	Paved	Good
65	Col de Richemond from Injoux	Ain	10.5%	7725 m	462 m	6.0%	Paved	Good
66	Col de la Rochette from Ruffieu	Ain	≈caveated9.0%	5516 m	347 m	6.3%	Paved	Good
67	Col de Richemond from Brénaz	Ain	8.9%	6806 m	337 m	4.9%	Paved	Good
68	Col de la Rochette from Hauteville-Lompnes	Ain	8.6%	5143 m	273 m	5.3%	Paved	Good
69	Col de Combe Blanche from La Vattay	Ain	8.4%	1477 m	36 m	2.4%	Paved	High
70	Col de Belle Roche from Le Dombiez	Ain	≈caveated8.1%	4677 m	126 m	2.7%	Paved	Needs confirmation
71	Col de Belle Roche from Les Neyrolles	Ain	≈caveated5.7%	2173 m	76 m	3.5%	Paved	Good
–	Voie de Nouveau Cimetière · not ranked	Ain	26.3%	339 m	50 m	14.8%	Mixed surface	Good
–	Chemin du Mollard · not ranked	Ain	≈caveated24.4%	1653 m	118 m	7.1%	Paved	Good
–	Lane near Le Village d'en Haut · not ranked	Ain	≈caveated24.2%	868 m	88 m	10.1%	Paved	Good
–	Lane near Bange · not ranked	Ain	≈caveated22.9%	2057 m	167 m	8.1%	Paved	Good
–	Chemin des Écoliers · not ranked	Ain	22.5%	248 m	34 m	13.6%	Gravel / dirt track	Good
–	Montée de la Grande Perrière · not ranked	Ain	22.1%	440 m	60 m	13.6%	Paved	High
–	Chemin du Pied du Mont · not ranked	Ain	≈caveated21.2%	368 m	51 m	13.7%	Paved	Good
–	Chemin du Sapin · not ranked	Ain	≈caveated20.1%	563 m	65 m	11.5%	Mixed surface	Good
–	Rue de Villard · not ranked	Ain	≈caveated20.0%	342 m	49 m	14.3%	Paved	Good
–	Lane near Marnod · not ranked	Ain	≈caveated18.8%	2020 m	207 m	10.3%	Paved	Needs confirmation
–	Lane near Farges · not ranked	Ain	≈caveated17.1%	9114 m	606 m	6.7%	Paved	Good