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Ultras · US · CO

Hardrock Hundred Endurance Run

2027 Hardrock Hundred Endurance Run (Counter-Clockwise)
Scheduled
Direction and dates are confirmed on the official site as of this research (Aug 2026): counter-clockwise, starting 6:00a Friday July 9, 2027, ending with the 48-hour cutoff at 6:00a Sunday July 11, 2027. The lottery has not yet run: application window is Oct 1-14, 2026, with the draw on Dec 5, 2026, so the 2027 field, entrants and any course-detail updates are not yet published.
Race dateJuly 9-11, 2027
Duration3 days
Start6:00am
Whenin 321 days
First held1992
Free, and always will be. NavRun makes money from race-day planning for runners who want it, never from this. Ultras change constantly, sometimes the morning of. Always confirm with the race director and the official website before you rely on anything here.
Distance not checked yet
Climb 33,441 ft
Descent 33,441 ft
High point 14,048 ft
Time limit 48:00:00
Aid stations 16
Started not checked yet
Finished not checked yet
Finish rate not checked yet
The course

Where it goes loop · 16 aid stations · rust marks a stop your crew can reach

Course line from the race's own GPX. Source file.

A closed, single-loop, approximately 100-mile mountain course on 4WD roads, dirt trails and cross-country terrain in the San Juan Mountains, run counter-clockwise in 2027: Silverton to Cunningham Gulch, Maggie Gulch, Pole Creek, Sherman (Lake City area), Burrows Park, over Cinnamon Pass to Grouse Gulch (called Animas Forks through 2025), Engineer, Ouray, Governor Basin, Kroger's Canteen, Telluride, Chapman (Ophir), KT, Putnam, and back to Silverton. The course crosses thirteen major passes above 12,000 feet, including the 14,048-foot summit of Handies Peak (the high point), and touches its low point at Ouray (7,678 ft). Runners finish by "kissing the Hardrock", a ram's head painted on a block of stone mining debris, rather than crossing a conventional finish line.

COURSE-CHANGE / MILEAGE CAVEAT (read before using any station mile below): the CCW aid-station mileage in this file comes from the 2025 edition (the last time Hardrock ran counter-clockwise), the most recent CCW chart Hardrock has published as of this research (Aug 2026). It measured 102.5 mi to the Silverton finish over 14 intermediate aid stations. For the 2026 Clockwise edition, Hardrock made a PERMANENT change: the Animas Forks aid station moved back to its pre-2021 Grouse Gulch site, removing the Animas Forks/CR 9 loop and shortening the course by 0.64 mi (now 101.8 mi in the CW direction, per the 2026 CW chart). Since that is a permanent, direction-independent course change (not a one-year CW quirk), the 2027 CCW course almost certainly also uses Grouse Gulch and is almost certainly close to 101.8-101.9 mi rather than 102.5 mi -- but no 2027-specific CCW aid-station chart, course description or GPX has been published to confirm the renamed station, its exact mile, or the finish mile. distance_miles and published_distance_value are therefore left null rather than asserted, and every aid-station mile at/after the old Animas Forks station (Engineer through the Silverton finish) should be read as 2025-vintage and roughly, not exactly, correct for 2027. There is no schema field for "which direction/edition of an alternating course this row describes" (course_selection is banned per the fill brief as unmerged), so the direction is recorded only in this course's name/description and here in prose; see _meta.notes.

The race

What this one is

A closed-course, approximately 100-mile mountain run on 4WD roads, dirt trails and cross-country terrain through the San Juan Mountains of southwest Colorado, connecting Silverton, Ophir/Telluride, Ouray and Sherman (Lake City). The course alternates direction every year; the run reverses so that the previous year's uphills become the next year's downhills. Finishers "kiss the Hardrock", a ram's head painted on a block of stone mining debris, rather than crossing a conventional finish line.

Founded in 1992 by Gordon Hardman, John Cappis, Charlie Thorn, Dale Garland and Rick Trujillo as a tribute to the hardrock miners who worked the San Juans. The run has been held every year since except 1995 (too much snow), 2002 (nearby forest fires), 2019 (too much snow) and 2020 (COVID-19). It alternates clockwise and counter-clockwise direction each year; 2025 ran counter-clockwise, 2026 ran clockwise, and 2027 is scheduled counter-clockwise.

Getting in

Getting in Entry, lottery and what the race asks of you before race day.

Lottery
Yes
Lottery opens
Oct. 1, 2026 hardrock100.com
Lottery draw
Dec. 5, 2026 hardrock100.com
Field cap
not checked yet
Registration
UltraSignup hardrock100.com
Qualifying
A "post-graduate" qualifying standard: Hardrock does not accept novice ultrarunners for safety reasons. Applicants must finish one race from Hardrock's own qualifying list, within that race's traditional cutoff time (an early-start or extended-cutoff finish does not count), during the qualifying period ending with the lottery. Qualifying races are chosen for exhibiting some combination of high elevation, long steep climbs, long aid-station spacing, severe weather exposure, water/snow crossings and fall exposure, and are reviewed annually by the Board; new races are phased in immediately and removed races are usually phased out over two years. Applicants must also complete an 8-hour Hardrock-related service requirement (course/trail work, aid-station or organizing service) each qualifying cycle, or be dropped from the start/wait list. hardrock100.com
Minimum age
18 hardrock100.com
Transfers
not checked yet
Deferrals
No hardrock100.com
Crew, pacers and drop bags

The rules that shape your day Anything marked "not checked yet" is a gap in what we hold, never a no from the race.

Crew allowed
Yes hardrock100.com
Vehicles per runner
1 docs.google.com
Pacers
Yes hardrock100.com
Muling
Not allowed docs.google.com
Drop bags
Yes docs.google.com
Cupless
Yes hardrock100.com
Course marking
Fully Marked hardrock100.com
Night running
Yes docs.google.com
Dogs
Not allowed docs.google.com
Headphones
not checked yet
Crew rules
Crews are allowed only at aid stations designated for crew access that year, are generally limited to a 400-yard radius of the aid station (Aid Station Captains may extend or limit this), and each runner is issued a single crew pass required to park at pass-controlled stations (Grouse Gulch and Cunningham as of 2026). Downhill yields to uphill on the narrow mountain roads. No drones without a BLM + Hardrock permit. Pets are not allowed in the main aid-station area or on course with runners. Runners are responsible and accountable for their crew's and pacers' conduct; a runner may be disqualified or suspended from future lotteries for crew non-compliance, and taking a ride that advances progress is treated as abandoning the run. At Grouse Gulch specifically, crew vehicles stage at the Eureka Campground and are released only once their runner has passed Oh! Point; ALL runners must check in/out at the Grouse Gulch timing tent regardless of where their crew is set up. Only two pacers or crew members may enter the main aid-station tent area with a runner, and only after the runner has arrived. docs.google.com
Pacer rules
Only one pacer may accompany a runner at a time, and pacers may not continue unless accompanying their runner. In the 2025 (last Counter-Clockwise) edition, pacers were allowed to join from Animas Forks (mile 44.6) onward, at that station plus Ouray, Telluride and Chapman, with a hike-in pacer EXCHANGE ONLY (no new pickup) permitted at KT. Runners over 60 years old may have a pacer for the entire run. All pacers must check in with aid-station personnel and sign a waiver (in advance at runner check-in, or at the station they join) and wear the resulting wristband on course; pacers under 18 need a parent/guardian signature. A pacer must run at least the whole leg to the next crew-access or specifically-allowed station, since there is generally no access in between. Muling is expressly forbidden. Family and friends may join a runner for the final mile into the Kendall Mountain Recreation Center parking lot area without being a registered pacer. NOTE: the exact station names/mileages for 2027's first pacer-access point will very likely change from "Animas Forks"/mile 44.6 to "Grouse Gulch" at a slightly different mile, per the permanent course change described in _meta.notes; this has not been confirmed for 2027 as of research date, so pacer_from_mile is left null rather than asserted. hardrock100.com
Drop bag rules
In the 2025 CCW edition, drop bags were accepted for transport to 7 designated stations: Cunningham, Sherman, Animas Forks (expected to become Grouse Gulch for 2027, see _meta.notes), Ouray, Telluride, Chapman, and the Silverton finish -- the same set of named towns/major stations used on the Clockwise chart, just visited in the opposite order. Bags must be dropped at the Kendall Mountain Recreation Center; the 2026 Clockwise manual gave a Monday-Thursday of race week drop window (0800-1500) with a Thursday 1500 deadline, and bags are returned progressively as stations close, with all bags back by the end of the Sunday awards breakfast. Bags must be labeled with the runner's name, bib number and destination; the race asks runners to weatherproof them, e.g. clothing sealed in a Ziploc bag inside the main bag, since full weather protection is not guaranteed. docs.google.com
Cutoff philosophy
The overall time limit is 48 hours, deliberately generous relative to the terrain: it is meant to let a runner hunker down for 2-4 hours to wait out an afternoon thunderstorm and still finish. Runners must leave each aid station by its posted cutoff time; several stations on the CCW chart carry no published intermediate cutoff at all ("None"), so only the overall 48-hour limit applies there. The course description frames a runner finishing over 40 hours as experiencing two sunsets, not as a warning about being slow: "the average time required to finish this run in this direction is just under 40 hours", so a 47-hour finish is a normal, intended outcome of the format, not a near-miss. docs.google.com
Aid stations

Every stop, and what you get there ● yes   · no   ? nobody has checked

Mile Station Cutoff Crew Bag Pacer Med To next
0.00 Silverton
9,318 ft
? ? · ? 9.30
9.30 Cunningham
10,378 ft
10:45am · ? 6.10
15.40 Maggie
11,838 ft
? · · · ? 5.00
20.40 Pole Creek
11,244 ft
? · · · ? 9.40
29.80 Sherman
9,638 ft
8:15pm · ? 4.20
34.00 Burrows
10,588 ft
? · · · ? 10.60
44.60 Animas Forks
11,003 ft
2:30am ? 6.00
50.60 Engineer
11,798 ft
? · · · ? 8.00
58.60 Ouray
7,678 ft
9:00am ? 7.60
66.20 Governor
10,673 ft
12:30pm · · · ? 3.60
69.80 Kroger's
13,098 ft
? · · · ? 4.90
74.70 Telluride
8,748 ft
4:00pm ? 9.70
84.40 Chapman
10,158 ft
8:45pm · ? 6.60
91.00 KT
10,628 ft
12:45am · · ? 5.60
96.60 Putnam
11,427 ft
? · · · ? 5.90
102.50 Silverton
9,308 ft
6:00am · ? ?
Driving your crew

Getting your people there 6 stops with directions the race published.

Cunningham mile 9.30 cutoff 10:45am

2WD from Silverton, about 30min. Take CR 2 NE from Silverton 4 miles to Cunningham Gulch following signs to the Old Hundred Mine Tour; after the Animas River bridge at Howardsville, turn right (south) up the valley. At 2mi past that turn, do NOT turn onto Stony Pass Road; angle right (southwest) toward the Highland Mary trailhead, then go 2mi more past a corral to a large clearing between the road and the creek. Expect parking marshals and a walk of up to a mile; carpool parking (2+ people AND 2+ crew passes) is available further along. Bathroom facilities are very limited. The manual advises crews not to wait at Cunningham for the runner's whole ~8-hour stay window; return to Silverton (20-30min) and come back.

docs.google.com
Sherman mile 29.80 cutoff 8:15pm

4WD from Grouse Gulch (formerly Animas Forks), about 2hr: NE on CR 2, then right onto CR 9/Cinnamon Pass Road, over Cinnamon Pass toward Lake City (~13mi, passing but not stopping at Burrows Park), becoming Hinsdale CR 30, then right (west) on CR 35 to the BLM latrine/Cataract Gulch Trailhead. Alternate 2WD via Lake City and Lake San Cristobal Road, about 3hr45min.

docs.google.com
Animas Forks mile 44.60 cutoff 2:30am

Grouse Gulch sits at 11,000' with no utilities or cell service and very limited parking. Per the 2026 manual, crews stage at the Eureka Staging Area (CR 2, 8.2mi from Silverton, open 2p Fri-4a Sat) and are held there until their runner crosses Oh! Point (~mile 53 in the CW numbering used by the manual); only vehicles with the runner's specific crew pass may proceed the final ~3mi/25-30min to Grouse Gulch. No restroom at Grouse Gulch itself; vault toilets are 0.6mi past the aid station at the old Animas Forks site. In 2025 (as "Animas Forks") the same road (CR 2/CR 9) was used to access this station directly by auto; the Eureka staging-and-release system is a 2026 change.

docs.google.com
Ouray mile 58.60 cutoff 9:00am

2WD from Silverton, about 45min via US 550 north over Red Mountain Pass. In town, turn west on 9th Ave, follow it 2 blocks to a gravel RV lot on the right for parking (or streetside once full). Do not park in the Ouray Hot Springs lot before 10:00p. Aid station is on the west side of the park between the gazebo and restrooms.

docs.google.com
Telluride mile 74.70 cutoff 4:00pm

2WD from Silverton, about 1hr15min via US 550 north to Ridgway, CO-62 west, then CO-145 south into town. Quick stops: metered parking on CO-145/Colorado Ave. Longer stops: Silverjack parking garage (paid, 3-block walk) or the free Shandoka lot (10-block walk); crews may no longer park in the Town Park lot as of 2026 per the Town of Telluride. A 20-minute unload zone exists at the east end of Pacific Ave. 4WD alternative via Ophir Pass Road, about 1hr. Pacers may not leave vehicles at this aid station.

docs.google.com
Chapman mile 84.40 cutoff 8:45pm

4WD from Silverton, about 1hr, via US 550 north to the Ophir Pass Road turnoff (marked with a large green sign near MP 75), then the dirt road up and over Ophir Pass (11,800') with a rough, steep 2-mile descent; park in the designated Ophir lot (on woodchips, not grass) and hike ~1.9mi east along Ophir Pass Road to the aid station. Alternate 2WD via Ridgway/CO-62/CO-145 into Ophir, then hike ~1.75mi. No crew, spectator, media or drop-off of any kind is allowed along Ophir Pass Road itself, and a crew parking pass must be displayed. No bathroom facilities for crews at the parking area or aid station.

docs.google.com
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