How Far From the Road Do Elk Go in Rifle Season?

GPS-collar studies put hunted elk about a mile or more from motorized routes, with cover mattering less than distance. Here are the numbers.

The best collar data put hunted elk roughly one to two miles from the nearest motorized route. Distance from motors matters more than thick timber. And a lot of elk solve the problem a different way, by moving to land the public cannot hunt.

All of the measured distances below come from Montana and South Dakota. No comparable collar study from a Colorado rifle season was found.

The main number: about a mile in rifle season

The largest study used GPS collars on 325 cow elk in nine herds in southwest Montana from 2005 to 2014, with more than 47,000 locations in rifle season. ^[1]

• In rifle season the average elk location was 1.28 miles from a motorized route. In archery season it was 1.61 miles. ^[1]
• Elk use of public land rose with distance from motorized routes up to about 0.95 miles (1,535 meters) in rifle season. Past that point, more distance added little. In archery season the same leveling-off point was 1.71 miles (2,760 meters). ^[1]
• In rifle season the secure ground elk used came in big pieces. Of the block sizes tested, only the largest, 5,000 acres, was supported. In archery season no minimum size was needed. ^[1]

A smaller study in the Elkhorn Mountains of Montana collared both sexes, 35 cows and 25 bulls, from 2015 to 2018. Three quarters of elk use in the hunting seasons fell at 1,846 meters or more from a motorized route (about 1.15 miles), and half fell at 3,679 meters or more (about 2.3 miles). Both bulls and cows chose ground farther from motorized routes, in archery and in rifle season. ^[2]

That forest has heavy beetle kill, so those distances may not carry over elsewhere.

Distance beats timber

The old rule of thumb for elk security came from western Montana: blocks of cover of at least 250 acres, more than half a mile from an open road, on at least 30% of the area. ^[7]

The southwest Montana collar data say that rule asks for more timber than cows need and less distance. Cow elk leveled off at only 9% canopy cover in rifle season and 13% in archery season. The average canopy where elk actually stood was 19.6% in rifle season. The authors concluded that motorized routes mattered more to cow elk than canopy did, and that the common 40% canopy standard is too strict. ^[1]

Pressure makes the road effect stronger

Across those nine herds, elk avoided motorized routes more as hunter effort went up. Near roads, more hunters meant fewer elk. Far from roads, elk barely responded to hunter numbers. ^[1]

Older work on bulls points the same way. A Forest Service review cites a 1991 study that found bull death rates of 62%, 45% and 31% in areas with 4.5, 2.6 and 1.0 miles of open road per square mile. ^[7]

Many elk leave public land instead

Road distance is only half the story. In the southwest Montana study, 61.9% of archery-season locations were on land the public could hunt. In rifle season it was 52.5%. ^[1]

In the Sapphire Mountains of western Montana, where the land is 59% public, cow ranges were 44% public land in archery season and 30% in rifle season. Bull ranges were 53% and 48%. ^[4]

Some elk go before a shot is fired. In southwest Wyoming, 67% of the collared cows that used a protected area had moved to it before the September 1 archery opener. None of the elk in the neighboring group left that early. ^[6]

How long does it last

The opener spike is short. In the Black Hills of South Dakota, collared elk moved more in the first 10 days after each season opened, with the biggest jumps on opening weekends. Before archery season the average distance between hourly locations was 120 meters. In the first 10 days of the season it was 163 meters. By the middle of the November firearm deer season, movement was back to late-August levels. In the firearm seasons elk also shifted away from main roads. ^[3]

The move to closed land tends to stick. Preliminary results from central Montana, based on the first two years of a collar study, tracked daily movement between open-access land and land with restricted hunting access. In the general rifle period, an elk on open-access land had about an 82% chance of still being on it the next day. In the late season that followed (November 29 to February 15), an elk on open land had about a 29% daily chance of moving to restricted land, and an elk already on restricted land had about a 93% chance of staying. ^[5]

So the jumpiness after an opener fades within weeks, while the shift onto ground hunters cannot reach builds through the season.

What this means for a Colorado rifle tag

Colorado's 2026 rifle seasons run October 14 to 18 (1st, elk only), October 24 to November 1 (2nd), November 7 to 15 (3rd) and November 18 to 22 (4th). Confirm dates and unit rules with Colorado Parks and Wildlife before you go, because regulations change.

Montana's general rifle season is long (October 23 to November 28 in the central Montana study ^[5]), not a short Colorado season, so the distances are a guide and not a rule. With that caveat:

• Measure from routes open to motors, including ATV trails, not from the trailhead.
• Look for ground about a mile or more from any motor, in a large unbroken block.
• Do not require heavy timber. Light cover far from roads held more cows than thick cover near them.
• Check what sits next to your unit. Private land or a no-hunting area nearby can hold a large share of the elk once rifles open.

What this does not tell you

• Nothing here was measured in Colorado. Terrain, road density and season length differ.
• The largest study is cows only. Bulls were collared only in the Elkhorn study, with 25 animals.
• These are averages over herds and years, not a forecast for your unit on a given morning.
• Snow changes everything late. In the southwest Montana rifle data, elk were less likely to use higher ground and ground holding more snow. ^[1]
• The central Montana access results are preliminary.

FilledTag builds one exact plan for your tag: parking, camp, morning and evening sits, and routes, with every pin checked against public land ownership and road rules. It is free for testers this season at https://www.filledtag.com/#signup.

Sources

1. Ranglack, D., Garrott, B., Rotella, J., Proffitt, K., Gude, J. and Canfield, J. (undated final report). Security areas for maintaining elk on publicly accessible lands during archery and rifle hunting seasons in southwestern Montana. Montana Fish, Wildlife and Parks. https://fwp.mt.gov/binaries/content/assets/fwp/conservation/elk/research/fall-elk-resource-selection---final-report.pdf
2. DeVoe, J., Lowrey, B., Proffitt, K., Garrott, R., Grove, A., Pengeroth, D. and Cascaddan, B. (2019). Elkhorn Mountains Elk Project, Final Report 2015-2018. Montana State University and Montana Fish, Wildlife and Parks. https://fwp.mt.gov/binaries/content/assets/fwp/conservation/wildlife-reports/elk/elkhornmtnselkproject_finalreport.pdf
3. Rumble, M.A., Benkobi, L. and Gamo, R.S. (2005). Elk responses to humans in a densely roaded area. Intermountain Journal of Sciences 11(1-2):10-24. https://research.fs.usda.gov/download/treesearch/30804.pdf
4. Proffitt, K., Mowry, R., Lewis, M., Durham, R., Hayes, T., Jourdonnais, C., Ramsey, P., Barker, K., DeVoe, J. and Mitchell, M. (2017). North Sapphire Elk Research Project. Montana Fish, Wildlife and Parks, University of Montana and MPG Ranch. https://fwp.mt.gov/binaries/content/assets/fwp/conservation/wildlife-reports/elk/nserp_final-report_2017_lowqual.pdf
5. Bealer, N., Proffitt, K., Rotella, J. and Petch, S. (2024). Elk Habitat Management in Montana W-179-R, annual interim report, December 2024. Montana Fish, Wildlife and Parks. https://fwp.mt.gov/binaries/content/assets/fwp/conservation/elk/elk-management-plan/6---elk-habitat-management-in-mt-2024-annual-report.pdf
6. Mikle, N., Graves, T.A. and Olexa, E.M. (2019). To forage or flee: lessons from an elk migration near a protected area. Ecosphere (USGS publication record). https://pubs.usgs.gov/publication/70203052
7. Christensen, A.G., Lyon, L.J. and Unsworth, J.W. (1993). Elk management in the Northern Region: considerations in forest plan updates or revisions. USDA Forest Service General Technical Report INT-303. https://research.fs.usda.gov/download/treesearch/35132.pdf