What distances are available for this event?
- →200 Miler – 10 loops
- →100 Miler – 5 loops
- →100K – 3 loops
- →50K – 1.5 loops
- →72-Hour Timed
- →One&Done – 1 loop
What are the start times and cutoffs for each race format?
- →200M: Wednesday, April 15 at 7:00 AM → Sunday, April 19 at 4:00 PM (105 hours)
- →72-Hr Timed: Thursday, April 16 at Noon → Sunday, April 19 at Noon
- →100M: Friday, April 17 at Noon → Sunday, April 19 at 11:59 AM (48 hours)
- →100K: Saturday, April 18 at 6:00 AM → Sunday, April 18 at 8:00 AM (26 hours)
- →50K: Saturday, April 18 at 7:00 AM → Saturday, April 18 at Dusk (~8:00 PM)
- →One&Done: Saturday, April 18 at 7:00 AM → Saturday, April 18 at Dusk (~8:00 PM)
What is the course layout and notable features?
The course is a folded figure-eight pattern with inner and outer loops. The inner loop includes features such as the Old Fort area, the 302 trail, Lakeside Aid Station, and the Stone Wall trail, while the outer loop features the Powerline Climb, a steep ascent of approximately 1,000 feet over a mile, and the Switchbacks from Hell. The course includes 3 full aid stations, 1 aid point, and 2 water points per loop.
What are the aid stations and their accessibility?
Aid stations include Lakeside, Cool Springs Overlook, and Park Entrance, all of which are accessible to crew members. The start/finish is located at Shelter 4, near the lake.
Are pacer rules in place for this event?
- →200M / 100M: Pacer allowed after finishing loop 2 (~40 miles)
- →100K: Pacer allowed after 1.5 loops
- →72-Hr: Pacer allowed after 24 hours
Pacer pick-up and drop-off are allowed at any crew-accessible aid point, and dropping a pacer mid-course is permitted if reported to aid station personnel.
How can runners collect their race packets?
- →200M: Tuesday evening at Cabin 5
- →100M & 72-Hr: 3 hours before race start at the start/finish
- →Saturday races: Friday 4–7 PM and Saturday morning at the start/finish
Are there any special provisions for runners over 55?
Yes, extra time is available for runners over 55 in distances over 100 miles. The formula is: (age − 55) × 30 minutes of additional time, split between an earlier start and a later final cutoff. Runners must contact the race director directly to confirm eligibility and coordinate start times.
What are the important notes for participants?
- →Elevation is significant, with 25,000–27,000 ft of gain for the 100M
- →No RVs or trailers for crew vehicles; smaller vehicles or shared rides are required
- →If roads become icy, the upper road may close, requiring crew to walk to Cool Springs Overlook AS
- →7:00 AM and 8:00 AM starts are after twilight, so no headlamps are needed at those times
- →Gender registration must match the driver's license
- →Official results are tracked on HardAssEvents.info ↗
What is the course preview available?
Participants can preview the course using Plot-a-Route ↗ with animated cursor movement to visualize the folded figure-eight layout. Links to specific routes are available: 100M course ↗, 100K course ↗, and 50K course ↗.
❓ Frequently Asked Questions
Q: When is 2026 DT Stone Anvil?
A: The event takes place on 14 April 2026.
Q: Where is the event held?
A: The event is held in Chatsworth, United States.
Q: What distances are available?
A: Available distances: 50 km, 72 hours, 100 miles, 100 km, 200 miles.