What is the most bike-friendly national forest?

By our Bike Access Grade, Mark Twain National Forest in Missouri is among the most open — 100% of its rideable trail miles are designated for mountain bikes (grade A). The full ranking of 90 graded forests is below.

How is bike-friendliness measured here?

Each forest is graded A–F on the share of its rideable trail miles (trails where USFS data designates bikes or Class-1 e-bikes) that are open to traditional mountain bikes, per the Travel Management Rule (36 CFR Part 212). It measures regulatory access, not trail quality. See our methodology for the thresholds.

Most Bike-Friendly National Forests

90 national forests ranked by Bike Access Grade — the share of each forest's rideable trail miles that USFS travel-management data marks open to mountain bikes. It grades access, not trail quality.

#	Grade	National forest	State	Bike-open	Bike miles
1	A	Mark Twain National Forest	Missouri	100%	509 mi
2	A	Wayne National Forest	Ohio	100%	311 mi
3	A	Beaverhead-Deerlodge National Forest	Montana	100%	54.3 mi
4	A	Okanogan-Wenatchee National Forest	Washington	100%	2.3 mi
5	A	Boise National Forest	Idaho	99%	1,553 mi
6	A	Chattahoochee-Oconee National Forests	Georgia	99%	246 mi
7	A	White River National Forest	Colorado	99%	915 mi
8	A	Arapaho and Roosevelt National Forests	Colorado	99%	620 mi
9	A	Chequamegon-Nicolet National Forest	Wisconsin	99%	1,013 mi
10	A	Custer Gallatin National Forest	Montana	99%	2,189 mi
11	A	Caribou-Targhee National Forest	Idaho	98%	2,696 mi
12	A	Green Mountain and Finger Lakes National Forests	Vermont	96%	204 mi
13	A	Grand Mesa, Uncompahgre and Gunnison National Forests	Colorado	96%	1,723 mi
14	A	Olympic National Forest	Washington	95%	99.7 mi
15	A	Eldorado National Forest	California	94%	413 mi
16	A	Helena-Lewis and Clark National Forest	Montana	91%	2,202 mi
17	A	Chugach National Forest	Alaska	91%	190 mi
18	A	George Washington and Jefferson National Forest	Virginia	90%	1,006 mi
19	A	Gila National Forest	New Mexico	88%	579 mi
20	A	National Forests in North Carolina	North Carolina	88%	445 mi
21	A	Coronado National Forest	Arizona	85%	201 mi
22	A	Prescott National Forest	Arizona	85%	556 mi
23	A	Stanislaus National Forest	California	84%	581 mi
24	A	Uinta-Wasatch-Cache National Forest	Utah	83%	1,043 mi
25	A	Allegheny National Forest	Pennsylvania	81%	212 mi
26	A	Shasta-Trinity National Forest	California	80%	189 mi
27	A	Nebraska National Forest	Nebraska	79%	56.2 mi
28	A	Modoc National Forest	California	79%	22.4 mi
29	A	Carson National Forest	New Mexico	78%	324 mi
30	A	Apache-Sitgreaves National Forests	Arizona	77%	286 mi
31	A	Cleveland National Forest	California	75%	92.6 mi
32	A	Mt. Baker-Snoqualmie National Forest	Washington	74%	268 mi
33	A	Tonto National Forest	Arizona	73%	24.5 mi
34	B	Dakota Prairie Grasslands	North Dakota	100%	250 mi
35	B	Hoosier National Forest	Indiana	100%	171 mi
36	B	Monongahela National Forest	West Virginia	100%	123 mi
37	B	National Forests in Texas	Texas	100%	36.2 mi
38	B	Colville National Forest	Washington	64%	341 mi
39	B	Santa Fe National Forest	New Mexico	63%	133 mi
40	B	Deschutes National Forest	Oregon	59%	658 mi
41	B	Sawtooth National Forest	Idaho	59%	782 mi
42	B	Angeles National Forest	California	56%	46.2 mi
43	B	Kootenai National Forest	Montana	55%	120 mi
44	B	Cibola National Forest	New Mexico	53%	190 mi
45	B	Bridger-Teton National Forest	Wyoming	53%	288 mi
46	B	Rogue River-Siskiyou National Forests	Oregon	53%	277 mi
47	B	Los Padres National Forest	California	51%	251 mi
48	B	Pike and San Isabel National Forests	Colorado	51%	619 mi
49	B	Kaibab National Forest	Arizona	48%	134 mi
50	C	Willamette National Forest	Oregon	41%	96.8 mi
51	C	Manti-La Sal National Forest	Utah	40%	202 mi
52	C	National Forests in Alabama	Alabama	36%	22.4 mi
53	C	Hiawatha National Forest	Michigan	35%	69.1 mi
54	C	Lassen National Forest	California	35%	46.4 mi
55	C	Black Hills National Forest	South Dakota	34%	255 mi
56	C	Lolo National Forest	Montana	34%	182 mi
57	C	Ozark-St. Francis National Forest	Arkansas	32%	105 mi
58	C	Land Between the Lakes National Recreation Area	Kentucky	31%	14.9 mi
59	C	Tahoe National Forest	California	30%	172 mi
60	C	Kisatchie National Forest	Louisiana	29%	63.6 mi
61	C	San Juan National Forest	Colorado	29%	218 mi
62	C	Six Rivers National Forest	California	28%	21.7 mi
63	C	Siuslaw National Forest	Oregon	27%	12.8 mi
64	C	Flathead National Forest	Montana	27%	79.6 mi
65	C	Salmon-Challis National Forest	Idaho	26%	298 mi
66	D	Superior National Forest	Minnesota	23%	213 mi
67	D	Humboldt-Toiyabe National Forest	Nevada	21%	250 mi
68	D	Payette National Forest	Idaho	20%	169 mi
69	D	White Mountain National Forest	New Hampshire	19%	164 mi
70	D	Lincoln National Forest	New Mexico	17%	37.2 mi
71	D	National Forests in Florida	Florida	15%	43.5 mi
72	D	Medicine Bow-Routt National Forest	Colorado	14%	134 mi
73	D	Dixie National Forest	Utah	13%	105 mi
74	F	Huron-Manistee National Forest	Michigan	10%	56.9 mi
75	F	Ottawa National Forest	Michigan	8%	115 mi
76	F	Inyo National Forest	California	7%	22.3 mi
77	F	Idaho Panhandle National Forests	Idaho	6%	105 mi
78	F	Sequoia National Forest	California	6%	24.8 mi
79	F	Umpqua National Forest	Oregon	6%	23.1 mi
80	F	Fremont-Winema National Forest	Oregon	5%	8.2 mi
81	F	Bighorn National Forest	Wyoming	4%	13.5 mi
82	F	Fishlake National Forest	Utah	2%	22.4 mi
83	F	Tongass National Forest	Alaska	0%	2.5 mi
84	F	Ashley National Forest	Utah	0%	1.1 mi
85	F	Rio Grande National Forest	Colorado	0%	0 mi
86	F	Shoshone National Forest	Wyoming	0%	0 mi
87	F	Sierra National Forest	California	0%	0 mi
88	F	Ochoco National Forest	Oregon	0%	0 mi
89	F	Wallowa-Whitman National Forest	Oregon	0%	0 mi
90	F	Chippewa National Forest	Minnesota	0%	0 mi

Frequently asked questions

What is the most bike-friendly national forest?: By our Bike Access Grade, Mark Twain National Forest in Missouri is among the most open — 100% of its rideable trail miles are designated for mountain bikes (grade A). The full ranking of 90 graded forests is below.
How is bike-friendliness measured here?: Each forest is graded A–F on the share of its rideable trail miles (trails where USFS data designates bikes or Class-1 e-bikes) that are open to traditional mountain bikes, per the Travel Management Rule (36 CFR Part 212). It measures regulatory access, not trail quality. See our methodology for the thresholds.