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Snow covered roads and mountain passes prevent bicycling from November through most of April. Cool and cloudy days are typical during the months of May and June. July and August are characterized by warm days and cool nights, with occasional afternoon thundershowers. September and October generally have clear and cool days, providing excellent riding weather. However, occasional early season snowstorms can occur in late September and October.
B. Bicycles are not allowed on any park trails or in off-road backcountry areas. Service roads and utility corridors are closed to bikes unless use in expressly permitted.
C. Bicycles must exhibit a white light on the front and a red light or reflector on the rear during periods of low visibility.
D. Riding bicycles abreast on a public roadway is prohibited.
The distance separating campgrounds, and the fact that all of the park's campgrounds typically fill early each day during the peak visitation season, will pose logistical problems for the bicycle or hiking camper in Yellowstone. A limited number of campsites are reserved for hikers and bicyclists at all campgrounds with the Exception of Slough Creek Campgrounds. Camping is Not Available at Old Faithful. If you are traveling with a large group of bicyclists or hikers, call AmFac prior to your arrival to check on group campsite availability. Not all campgrounds can accommodate large groups. If you have access to a vehicle, use it to find a campsite in your destination campground early each day.
Bicyclists or hikers camping without a vehicle can use designated hiker/biker sites for $4.00 per individual per night. All other vehicular campsites range from $10.00 to $16.00 per night, depending on the facilities available. The opening and closing dates vary considerably for each campground in the park. Check the Calendar Page and/or Camping Page to make sure that a campground is open if you are planning a spring or fall visit to Yellowstone.
There are many potential hazards for the bicyclist in Yellowstone. Heavy traffic, large vehicles, wide mirrors, narrow roads, and erratic driving behavior all contribute to the bicycle-motorist accidents that occur each year in the park. Wear a helmet and high visibility clothing. Ride single file. The maximum number of cyclists traveling in a single cluster may not exceed 15, these clusters must be at least one half mile apart. Report all accidents as soon as possible to a park ranger.
Traffic flow is heaviest from mid-June to mid-September, with daily peaks from mid-morning to late afternoon. Roads most heavily used are those that serve the well-known points of interests in the park. Plan accordingly to avoid peak traffic periods and heavily used roadways. Pull over and allow motorists to pass if you are impeding traffic flow. Service roads open to bicycling may be used by both hikers and horse riders. Yield the right-of-way to these users where you encounter them (the same holds true for bears!). Further the interests of all bicyclists by staying on designated routes, off foot trails and out of closed areas.
1. The abandoned railroad bed paralleling the Yellowstone River between Gardiner and the park boundary at Reese Creek. 5 miles.
2. Mammoth service road beginning at the top of the hill on the Old Gardiner Road above Mammoth running northwest to the telephone microwave station. 1.5 miles.
3. Golden Gate service road between Golden Gate and Joffee Lake. Approx. 1.5 miles.
4. Swan Lake gravel pit road, 6 miles south of Mammoth. Approx. 1 mile.
5. Superintendent's campground road, adjacent to the entrance to the Indian Creek Campground. 0.4 mile.
6. Riverside trail from entrance area to Barns road. 1.4 miles
7. Fountain Freight Road located 6 miles north of Old Faithful. Road under during 1996, inquire at Old Faithful visitor center for current conditions.
8. Daisy Geyser cut-off to Biscuit Basin. Abandoned service road. 1.4 miles.
9. The paved trail beginning in front of the Lower Hamilton Store at Old Faithful to Morning Glory Pool. 2 miles. Bicycles are not allowed on the unpaved trail continuing beyond Morning Glory Pool to Biscuit Basin.
10. Lone Star Geyser road from the Grand Loop Road to the Lone Star Geyser parking lot. 2 miles.
11. Natural Bridge Road near Bridge Bay. 1 mile.
12. The old roadbed near the lake shore between Lake Hotel and where the roadbed joins the main road south of Lake Junction. 1 mile.
13. Mount Washburn Service Road, from the Chittenden Road parking area to the summit of Mt Washburn. 3 miles. Bicycles are not permitted on the trail between the summit and Dunraven Pass parking area.
14. Old Chittenden Service Road, between Grand Loop Road and Tower Falls Campground. 2 miles.
15. Rose Creek Service Road behind the Lamar Ranger Station. 1 mile.
Information provided by the Park Service.
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