2026 AC100 course map by Travis Metzger – updated July 19, 2026.
Download the 2027 AC100 Checkpoint Cutoff Chart.
The 2024 Race Book describes the traditional point-to-point course and does not reflect the current loop course. Use the current course map and checkpoint chart on this page for current race information.
| Aid Station | Miles to Next | Mileage | First Runner | Cut Off | Crew Access | Pacer Access | Drop Bags | Pace to Next | Time To Next |
|---|---|---|---|---|---|---|---|---|---|
| Loma Alta Park | 11.2 | 0 | 05:00AM Sat | 05:00AM Sat | Yes | No | No | 18:42 | 03:30 (210) |
| Clear Creek | 4.1 | 11.2 | 07:00AM Sat | 08:30AM Sat | No | No | Yes | 19:42 | 01:20 (80) |
| Josephine Peak | 9.3 | 15.3 | 07:45AM Sat | See note below | No | No | No | 16:38 | 02:35 (155) |
| Red Box | 8.6 | 24.6 | 09:10AM Sat | 12:25PM Sat | Yes | No | Yes | 15:45 | 02:15 (135) |
| Newcomb-1 | 9.5 | 33.2 | 10:20AM Sat | See note below | No | No | No | 19:30 | 03:05 (185) |
| Shortcut-1 | 6.4 | 42.7 | 11:45AM Sat | 05:45PM Sat | Yes | No | Yes | 22:44 | 02:25 (145) |
| Chilao-1 | 3.7 | 49.1 | 01:00PM Sat | 08:10PM Sat | Yes | Yes | Yes | 24:08 | 01:30 (90) |
| Mt Hillyer | 3.7 | 52.8 | 01:45PM Sat | 09:40PM Sat | No | No | No | 21:27 | 01:20 (80) |
| Chilao-2 | 6.4 | 56.5 | 02:20PM Sat | 11:00PM Sat | Yes | Yes | Yes | 22:37 | 02:25 (145) |
| Shortcut-2 | 9.5 | 62.9 | 03:30PM Sat | 01:25AM Sun | Yes | No | Yes | 17:53 | 02:50 (170) |
| Newcomb-2 | 6.3 | 72.4 | 05:00PM Sat | See note below | No | No | No | 19:50 | 02:05 (125) |
| Chantry Flats | 6.1 | 78.7 | 05:50PM Sat | 06:20AM Sun | Yes | Yes | Yes | 31:58 | 03:15 (195) |
| Mt Wilson | 5.6 | 84.8 | 07:40PM Sat | 09:35AM Sun | Yes | No | Yes | 16:01 | 01:30 (90) |
| Sam Merrill | 6.0 | 90.5 | 08:20PM Sat | 11:05AM Sun | No | No | Yes | 17:30 | 01:45 (105) |
| Millard | 4.4 | 96.5 | 09:20PM Sat | 12:50PM Sun | No | No | Yes | 15:59 | 01:10 (70) |
| Loma Alta Park | 100.8 | 10:00PM Sat | 02:00PM Sun | Yes | Yes | Yes |
* There is no cutoff at Josephine Peak or Newcomb. Transporting dropped runners out of these locations is extremely difficult.
The 2026 AC100 estimated elevation profile created by Travis Metzger
Click to view the 2025 AC100 3D terrain map.
In addition, here is an interactive, 3D terrain map of the 2025 Angeles Crest 100 Mile Race. It is based on the course GPX file downloaded from the AC100 website. The map is initially zoomed in on the climb up Mt. Baden-Powell. To change the view, use the control on the upper right side of the screen. Track and placename locations are approximate and subject to errors.
Current elevation data: The previous segment-by-segment elevation table described the traditional course and has been removed. Use the current course map and elevation profile above for the loop course.
The maps on the following pages are divided by
checkpoint to checkpoint segments to give runners a
general overview of each section of the 2019 course.
Additional maps show areas that might be confusing
on training runs if you don’t know the course well.
Because the length of the course segments vary
significantly, as does their primary orientation
(north/south versus east/west), the orientation and
scale of the maps vary as well. The scale and map
orientation are provided in the corner of each map.
The following symbols are used throughout all maps.
Detailed AC100 veteran tips, as well as driving
directions for you and your crew, can be found in the
AC100 Race Book. The AC100 Map Book is available
for download as well.
62.51 MILES
The Angeles Crest 100K is held on the same day as the AC100 100 Mile Endurance Run. The 100K starts and finishes at Loma Alta Park in Altadena, with a 7:00 AM start. The estimated route travels through Clear Creek, Josephine Peak, Red Box, Newcomb, Chantry Flats, Mt. Wilson, Sam Merrill, and Millard before returning to Loma Alta Park.
| Checkpoint | Estimated mileage |
|---|---|
| Loma Alta Park start | 0.0 |
| Clear Creek | 11.2 |
| Josephine Peak | 15.3 |
| Red Box | 24.6 |
| Newcomb | 33.2 |
| Chantry Flats | 39.5 |
| Mt. Wilson | 45.6 |
| Sam Merrill | 51.2 |
| Millard | 57.2 |
| Loma Alta Park finish | 62.51 |
The top two men and top two women finishers will receive a Sterling Silver Ticket into the 2028 AC100. Learn more: AC100 Sterling Silver Ticket races.
Open the interactive 100K course map in CalTopo
Final checkpoint mileage, aid-station locations, cutoff times, and other course details are subject to confirmation.
