The 100 Mile race starts at 7:00AM on the Bonneville Speedway and runs out to join the roads and trails that traverse the "islands"... mountains that seem to float on the Salt Flats.
There is a 36 hour cutoff for an official finish, and all finishers making the cutoff receive a finishers belt buckle.
The course starts and finishes at the same location, so runners won’t have to worry about shuttling vehicles or themselves. The course will also spend several miles in Nevada, so we'll see about getting a few slot machines at those aid stations.
The BLM permitting, EPA and public comment processes have all completed, and we're good to go for the next several years! The last two years went extremely well with about 50 runners each, and we should be able to triple the volume over the next few years!
This year we're adding a 50 Mile event as well! Standby for more details!
A detailed 100 Mile course description is posted below, and Aid Station locations and directions are posted in the "More Info" tab.
The course marking is very straight-forward and easy to follow. From the Start to Aid 2 we use both green pin-flags and re-bar with orange flagging. Through this section, the course is marked every 1/8 mile. After leaving Aid 2, the marking is every 0.3 mile with green pin-flags, and flour arrows at each intersection. Intersections are also marked with one green pin-flags showing the correct direction, and three red pin-flags showing the wrong direction. Additionally, intersections where it might be easy to miss and go the wrong way, we have traffic cones blocking the wrong direction. All the night section pin-flags are also marked with DOT reflectors which your headlamp picks up a couple hundred feet away.
The course begins at the end of the Bonneville Speedway access road on the staging area for the Speedway. Once the gun goes off, head North following the flagging along the Speedway for 10 miles, passing Honey-Bucket portable toilets at mile 3 and 7, to Aid Station 1 at 10 miles.
You’ll be running on nearly 6 feet of solid salt for this entire section!
The surface is generally quite hard, similar to hard-pack dirt. However, if there’s been any moisture, it can be very sticky and you can accumulate some salt cakes on the bottom of your shoes… just keep running and it’ll fall off eventually.
From Aid 1, head North following the same flagging for almost two more miles, and then turn East following the same flagging and then pin-flags for about a mile where you’ll turn North again and join faint 4x4 tracks that head back North where you’ll reach Aid Station 2 at 16 miles.
You’ll have transitioned off the salt and will now be on the classic firm sand of the salt basin. It’s a little like running on the beach near the water line. The big post stuck in the salt here is a mysterious relic from the past and serves as a great marker for the aid station.
From Aid 2, follow pin-flags north for just over a mile where you’ll intersect the hard-pack, dirt road that connects
Floating Island to Silver Island, turn left following the big flour arrows and pin-flags and head west on that road. Follow this road due west for a mile and a half, where it enters the brushy landscape at the foot of Silver Island. The road ultimately winds around to head south, where it joins the Silver Island Loop road. Follow the flour arrows and pin-flagging South, then continue following the pin-flags to Aid Station 3, at 22.6 miles and prepare for the first real climb of the run.
From Aid 3, head East up the hill on a winding, hard-pack and rock 4x4 trail which turns North to reach Cobb Peak pass, and Aid Station 4 at 25.5 miles.
Descend North from Aid 4 down the canyon, and take note of the dozens of caves in the rock formations to your right… The Native Americans in this area historically used these same caves as shelter, storage, and ceremonial sites. Follow the road out of the canyon 3.3 miles to the intersection with the Silver Island Loop road, and again follow the flour arrows and pin-flags to join the hard-pack, dirt road heading north-west. The road quickly turns more due west, and after another 2.7 miles, you’ll arrive at Aid Station 5 at 31.6 miles.
From Aid 5, follow the main dirt road north, avoiding any of the tempting by-roads.
As you pass over the first hill, you’ll descend onto Crater Island. You’ll pass a few other possible departures from the main road, but stay on the main road headed north. The landscape will begin to change and become more formidable as you climb up to the first pass at 37 miles, then you’ll descend again through a wide valley before the short, rocky climb to the second pass at mile 39.5. Take in this surreal view, as very few humans ever see this part of the Salt Flats, and if the day is clear you’ll be able to see the mountain peaks in Southern Idaho from here. Aid Station 6 is located here, so you can eat while you enjoy the view. Top off your water for the next section... you're going to need it!
From Aid 6, descend down the steep, rocky jeep road and as the tracks fade into the sands of the salt desert, follow the pin-flagging left and head south along the edge of Crater Island, following the intermittent ATV tracks and the regular course flagging.
Pay close attention to the course markings and flagging, as the trail here is very ill-defined at best, and virtually non-existent at worst. Keep the brushy parts to your left, and the salt desert to your right and you’ll be on track. The surface here will alternate between relatively firm to almost like flaky pie-crust, so plan on your hip flexors getting a bit of a workout. Follow the curves of the foothills of Crater Island as it takes you South for about 8 miles where you’ll link up with a very rocky jeep road heading East. A water station is located here. This winding road climbs up the hill to where it joins the main road you ran North on as you left Aid 5. Head South on the main road back to Aid Station 7 at 50.4 miles (this is the same station as Aid 5).
From Aid 7, head west on the hard-pack dirt of West Silver Island Loop road and follow it for 3 miles to where it makes a sharp turn south around some rock formations and out onto the flat, brushy desert.
Continue south on this road for another 3 miles to Aid Station 8 at 57.4 miles. From Aid 8, continue south on this road to the intersection with Silver Island Pass Road and Aid Station 9 at 61.7 miles.
From Aid 9, head East on Silver Island Pass Road for 4 miles over to the east side of Silver Island where Silver Island Pass Road intersects with the East Silver Island Loop Road. As you ascend to the pass, you’ll hit the “talcum powder 100 yard dash” portion of the course. Gators are handy here. Once you hit the intersection on the other side of the pass, head South on East Silver Island Loop Road for 1 mile to Aid Station 10 at mile 67. Leave Aid 10 on a narrow, rocky 4x4 road heading North-West. Follow this road as it turns West for 5 miles to where it joins West Sliver Island Loop Road again, and then head South for 2 miles to Aid Station 11 at 74.3 miles.
After leaving Aid 11, follow West Silver Island Loop Road south for about 2 miles to a fork in the road, and take the left fork which runs you past a large concrete building on your right.
After passing this building, you’ll turn right (East) on a paved road and continue running West for another 2.7 miles to Aid Station 12 at 80.6 miles. Be prepared for the pavement to end, and the washboard and rocks to begin as you enter Nevada.
Leave Aid 12 and continue West for another two miles where you’ll see the left Turn (flagging, flour arrows, and traffic cones now mark this turn) which takes you back South-East on a narrow, hard-pack dirt ATV trail. Follow this trail to just after mile 88 where it turns sharp left and takes you North over a summit and down to Aid 13 at mile 89.8.
Leave Aid 13, make your last short, steep climb, and continue the descent North-East on the now sizable 4x4 trail and follow it as it turns East. At mile 91, turn right taking the larger fork South and head towards the mountain top with the microwave antenna. After 1 mile, turn left and double-back on another 4x4 road heading back North for .4 mile towards a retaining dike, then turn East again for .3 mile, where it will turn South East for a mile. Continue on the ever-increasingly large road as it makes a bend North and then back to East to where it joins an enormous gravel road. Follow this road, and as the road becomes a “divided gravel highway”, stay on the left side and continue down this road until you intersect the pavement at mile 94. Turn left on the pavement, and follow it to Aid 14 at mile 95.