Course Description, Map and Race Profile

The Drift 100 will begin on Friday March 11, 2022 at 9:00 am. The course is approximately 101 miles (because why stop at 100, #amiright?), with around 7,800 feet of elevation gain/loss. This is a self-sufficient race. No drop bags, no pacers, no cell service. Check points are separated by upwards of 35 miles of varied conditions and temperatures. Much of the course is along the Continental Divide; as Drifters will be both navigating back and forth over the Divide itself and traversing it, you will reach elevations just shy of 10,000 feet. 100-mile Drifters unable to finish the race will be required to pay a $200 drop-out feeno exceptions. This recreation event is authorized under a Special Use Permit with the Bridger-Teton National Forest and the Shoshone National Forest.

This course will start and end in Kendall Valley along the Green River, 25 miles from Pinedale, Wyoming. Racers will first head north toward Dubois and then head back toward the start, forming a figure-8. Less than 10% of the race will be traveled twice. Race time cutoff is 48 hours.

The course will be marked with orange lath and reflective where needed. Racers need to be familiar with the course. We strongly recommend racers download the Avenza app and the CDT geo pdf from the links below. Closer to race day, we will email a GPX overlay of the course including aid stations and safety shelters. This will allow racers to navigate by GPS with a smart phone. Bear in mind the limitations of phone batteries in the cold. Night 1 of the 2021 race registered temperatures of nearly -30* F, so seriously…be prepared for cold with your body and your electronics.

KML Download

GPX Download

Avenza App Download

CDT Geo PDF Download


Racers must qualify for The Drift 100, however, there is no specific qualifying race. You must be able to prove you can safely and independently complete the course. Previous completion of a similar winter ultra such as Arrowhead, White Mountains, ITI, Susitna, Fat Pursuit, etc. will allow you access to the 100. Not sure about your qualifications? Reach out to Race Directors Keri or Darren with any concerns before registering. On the registration form, please list previous race, expedition and/or winter travel experience and any other experience you feel is relevant. Racer acceptance for The Drift 100 is ultimately decided by Race Directors. Registration will open October 14, 2021 at midnight. If you register and the Race Directors deny your acceptance, you will receive a full refund, or you may switch distances (sign up for the 13- or 28-mile course) as space allows or roll your registration into 2023’s races. This race sells out rapidly, and space is limited so don’t delay. We do utilize a wait list as well, but if you want to be certain of your spot, make sure you grab it right away.

Covid Testing

All 100-mile racers and volunteers require negative PCR Covid test results dated within 72 hours of race day, regardless of vaccination status. There is no same-day asymptomatic testing in Pinedale, so plan ahead. Vault testing is free for Wyoming residents.

Aid Stations

There will be four manned, heated aid stations along this course at approximately mile(s) 25, 50, 67 and 83. Racers must check in and out of all aid stations! Aid stations are small-no bikes, skis or sleds allowed inside. We do not have exclusive use of Strawberry or Sheridan Aid Stations. Aid stations will have water, hot drinks, something sweet and something salty. Sleeping in Aid Stations is not allowed. Masks or face coverings are recommended in Aid Stations. This is subject to change if Covid restrictions warrant.

Aid Station

Mile Distance from Last AS Cut-off time


Start Green River TH

0 0 Friday 9 am TBA

Strawberry Aid Station

(bathroom available)

24.9 24.9 Friday 9 pm

12 hours


Sheridan Aid Station

50 25 Saturday 9 am

24 hours


Warm Springs Aid Station

(bathroom available)

67.3 17.3 Saturday 6 pm

33 hours


Strawberry Aid Station

(bathroom available)

83.5 16.2 Sunday 2 am

41 hours



Kendall Valley Lodge

101 18.3 Sunday 9 am

48 hours


All aid stations will have sweet and salty snacks, coffee, tea, water and the ability to heat it. See the chart above for the hot food menu (subject to change prior to race day). If you have food allergies/restrictions, you may leave us a small container of food to leave at the Warm Springs Aid Station. This is for hot food only as we are unable to accommodate all food allergies or guarantee no cross-contamination. Racers are expected to pack their own trail food.


Cut-off times are generous but strict. Drifters must leave the aid station before its posted cut-off time. If a racer does not make a cut-off time they will be snow machined off the course and required to pay their $200 fee. This is not an option, so don’t waste time arguing with course volunteers about any of it.

Course Map and Profile

Map Download

This route is subject to slight modification prior to race day. Stay tuned for any updates to this course, as much of it will be weather dependent.

Course Description

Section 1: Start to Strawberry Aid Station

24.9 miles +2384′ -1054′

The Drift 100 race will start at 9 am from the Upper Green River parking area, just past the Forest boundary. The race starts on the CDT and heads north a flat 2.6 miles paralleling the Green River. At mile 2.6, racers will cross the Kendall Bridge and continue along the CDT for an additional 3.1 miles (the course will retrace this section on the way to the finish line). After crossing Tosi Creek, racers will turn off onto the ‘S’ trail, which the course will follow to Strawberry Shelter. It is here that the gradual climb to Strawberry begins. The trail remains flat, fast and open for another 2 miles. The trail forks and the course begins to climb toward Bacon Ridge, gaining 1000 feet in the next 5 miles. The trail continues along the base of Bacon Ridge and past Mosquito Lake. At mile 18.7, the course has gained 1500 feet. The trail continues gently over the next three miles past Buffalo Meadows, then meanders west in and out of the woods, up and down rolling hills for another 4 miles. At mile 24, the ‘S’ trail rejoins the CDT, which you will follow for 0.5 miles to the Strawberry Aid Station. You’ve completed a near-marathon, and are psyched to see the aid station and the food, but then you remember that you signed up for a 100 so you eat away your sorrows and move on.

Section 2: Strawberry Aid Station to Sheridan Aid Station

25 miles +3117′ -2975′

The course heads east from Strawberry through gently rolling hills in and out of the woods for 5 miles. Racers will retrace this section back to Strawberry on the way toward the finish. The course splits north and crosses the Continental Divide at approximately mile 30. The trail skirts the woods for just over a mile before descending nearly 400 feet into the Salt Creek drainage, which turns into the south fork of Warm Springs. This is the  only ungroomed section of trail. As quick as the trail descends, it begins to climb again. At mile 35 the course turns west on to the ‘B’ trail, where it will gain 1000′ over the next 3.7 miles. Before the summit, the course crosses the Continental Divide again at mile 37. The trail continues south of Fish Creek Mountain and crosses the Continental Divide two more times across a small descent. At mile 39.5 the course leaves the ‘B’ trail and continues southwest on the ‘F’ trail, which will lead the way to the Sheridan Basin Aid Station. There will be an emergency shelter in this area-exact location announced closer to race day. The trail continues with small descents and climbs. It crosses the Continental Divide again before following and zig-zagging back and forth across it for about 6 miles. At mile 47, racers will reach 9840′-the highest point on the course. The course gently descends in and out of the woods for 600′ over 3 miles to Sheridan Pass at mile 50. You are halfway there. The trail continues downhill for just shy of a mile to Sheridan Aid Station, where you will find some much-deserved warm food and shelter from the wind and cold.

Section 3: Sheridan Aid Station to Warm Springs Aid Station

16.5 miles: +1547′ -2302′

This section of course if fast, short and (mostly) downhill, so prepare to feel like a pro. The trail leaves Sheridan Aid Station heading east on the ‘F’ trail. Almost immediately, the course will continue east on the ‘E’ trail. The trail remains open and downhill-one may appreciate a pair of goggles. At mile 52.2, the trail slows a bit and reenters the trees. The next couple of miles are relatively flat and protected. At mile 54 the course turns south on the Continental Divide Trail, which the trail will follow until about mile 97. The CDT descends the next 3 miles toward the Trout Creek drainage. The ‘B’ trail intersects here, but the course will stay on the CDT. The course finishes this section with a series of three climbs and descents ranging from 200-400′.

The first climb ascends 300 feet in 1.4 miles along an unnamed ridge to nearly 9,000 feet then descends 300 feet down the ridge to Trapper Creek. The trail holds this contour in to Spring Creek-the same creek followed on the ‘A’ trail. The trail regains the same elevation over another mile in the third climb. The course then opens up for a 500 ft descent following Snowshoe Creek for nearly 4 miles. The course turns west for another fast mile to Warm Springs Aid Station at mile 67.

Section 4: Warm Springs Aid Station to Strawberry Aid Station

16.2 miles +1784′ -1174′

Warm Springs offers wide open views…and the potential for wind. The course continues on the Continental Divide Trail heading south. The course descends for almost a full mile, so enjoy that! Then at about mile 68, Drifters will begin the biggest climb of the course up Union Pass. The trail gains nearly 1400 fee in 4.4 miles. Although much of the climb up Union Pass is protected in the trees, the pass itself is not, and is prone to some serious wind. Goggles, face coverings and warm layers will definitely be appreciated here. Mile 72.5 is the summit of Union Pass at 9656′. The descent is more gradual than the climb, but less protected by trees. At mile 76, the ‘AA’ trail intersects the CDT. The course remains on the CDT continuing south. At mile 78.8, the CDT and ‘A’ trail intersect, joining the same trail the course left from Strawberry Aid Station. The last five miles are relatively flat, ending with a short climb to Strawberry Aid Station, another fabulous hot meal and the final leg of the course.

Section 5: Strawberry Aid Station to Finish Line

18.3 miles +806′ -2107′

Welcome to the home stretch! Strong work!

Kendall Valley Lodge is only 18 miles away. The course leaves Strawberry Aid Station on the same trail Drifters started the race on. There is less than a half-mile descent after leaving the aid station and intersecting with the ‘S’ trail. If you are a fast Drifter, you may encounter other racers approaching or departing Strawberry Aid Station for the first time-be kind. The course remains on the CDT and begins the final climb of the race. The trail ascends about 400 feet to Pinion Ridge at 9200′. From here, you have 15 miles and 1500′ of descent to finish. The first 1400′ will come in the next five wide open miles. There is a tiny climb at the big bend, and the trail is back alongside the Green River straight through to the finish. If you are here Saturday morning, watch for 13- and 28-mile Drifters across the river. At mile 95.5, the ‘S’ and CDT trails intersect again. The course continues on the CDT retracing miles 3-6. Just before reaching the Kendall Bridge, the course leaves the CDT and continues south on the ‘P’ trail. Do NOT cross the river. From here it is a mere 3 miles to the finish. Once the trail crosses Rock Creek, you are a stone’s throw away from the finish line. Congratulations, you badass, you. You did it!

Sleeping on the Course

Keep in mind that this is a race, not a tour. Sleeping is not allowed in aid stations. Should you choose to sleep on the trail, you must go at least 10 feet off the trail, but keep your blinking light visible to volunteers, other racers and trail sweeps.


The Drift 100 has partnered with Trackleaders. All 100-mile Drifters will be required to carry a tracking device. Racers are encouraged to use their own devices (either a Spot or an InReach). If you do not have one, you may rent one. We will send a Trackleaders sign-up link for the event closer to race day. This is REQUIRED for all 100-milers, even those who choose to travel together. If you are using your own or a borrowed device, please take the time to learn how to use it BEFORE race day, so volunteers don’t have to chase you down and show you how to turn on your tracking. Although this does add an element of safety to the race, it by no means allows for unprepared racing. Plan accordingly for the cold-have a way to insulate your device.


Although every attempt is made to make this race as safe as possible, Drifters are reminded that you will be traveling through 100 miles of extremely remote wilderness in variable, often formidable, conditions at altitude in the winter. Again for those in the back: Remote Wilderness. Horrible Weather Conditions. Altitude. Winter. You are ultimately responsible for your safety. For 2022, the 100-mile race is capped at 50 competitors, so it is likely that you may not encounter anyone between checkpoints, or for several hours at a time. There will be limited snow machine support and course sweeps. Do not underestimate the difficulties of this race.


In the event a racer is unable to finish the race or if they miss an aid station cutoff, they will be taken off the course via snow machine. It may not be possible to evacuate from the course immediately. Be prepared to wait for a while. Racers may initially be taken to a heated aid station for a time before a full evacuation can be completed, based on volunteer availability and race flow. Reminder: All racers evacuated from the 100-mile course are REQUIRED to pay $200. Exceptions: if you turn around south of Strawberry Safety Shelter on your way in, you may return to the start/finish on your own. Racers will not be permitted to leave the course on non-race snow machines.

We know it can be a bummer to quit a race. We know the mood. We know you’re tired, you’re pissed, you’re disappointed, you’re hungry, you may be hurting, you’re probably freezing, and you’re just plain defeated. But be grateful for assistance off the course. Pay your drop-out fee and be kind to your evacuator. Be patient if you have to wait, even for several hours. Remember that these folks are only there because they have volunteered to help you (even in the middle of the night), not to put up with your bitter buffalo mood. So, if you need to get a ride out, swallow your damn pride, pay the fee, and be a nice human. K, thanks.


Racers are expected to start and finish with all gear they will need for the course. Racers may pick up snacks and drop trash at aid stations. There is no caching or outside support allowed. This includes dropping gear you are not using, towing or receiving food, water or a ride from anyone not affiliated with the race. Doing so will result in disqualification. Racers can and should help each other. Buddy system is always encouraged.


March in Pinedale is still very much winter. The average high is 38*F (which seems like a lie-it’s colder than that) and the average low is 7*F (again: lies). March is the windiest month (and, hey, that’s really saying something) with an average wind speed of 8 mph (but it’s totally going to be windier than that).  However, temperatures in Sublette County in March have been as cold as -39*F. Read it again. For real. (yes, it says negative.thirty.nine.degrees.fahrenheit). Keep in mind that much of your time will be spent between 9- and 10,000 feet. You will have a full 12 hours of darkness. Wyoming doesn’t f**k around: frostbite, hypothermia, dehydration, sun- and windburn are all very real and potentially deadly dangers here. Be prepared. Be overly prepared. Should you show up for the race under-prepared, it is at the discretion of a Race Director to determine whether you can safely race, and you may be denied entry, without a refund on your registration fees. So get your shit together and be safe.