2026 AC100

Checkpoint Cut OffS

Altadena to Mt Hillyer to Altadena

The 2026 race will use a new out and back course.

Aid StationMiles to Next
Aid Station
MileageFirst RunnerCut OffCrew
Access
Pacer
Access
Drop
Bags
Pace to
Next Aid
Station
mm:ss
Time To Next
Aid Station
hh:mm (min)
1. Loma Alta Park11.20.005:00AM Sat05:00AM SatYesNoNo18:4203:30 (210)
2. Clear Creek2.611.207:00AM Sat08:30AM SatYesNoNo19:2300:50 (50)
3. Josephine Saddle-11.513.807:30AM Sat09:20AM SatNoNoNo20:1600:30 (30)
4. Josephine Peak1.515.307:45AM Sat09:50AM SatNoNoNo13:3100:20 (20)
5. Josephine Saddle-27.816.808:00AM Sat10:10AM SatNoNoNo17:1302:15 (135)
6. Red Box8.624.609:10AM Sat12:25PM SatYesNoNo15:4502:15 (135)
7. Newcomb-19.533.210:20AM Sat*NoNoNo19:3003:05 (185)
8. Shortcut-16.442.711:45AM Sat05:45PM SatYesNoNo22:4402:25 (145)
9. Chilao-13.749.101:00PM Sat08:10PM SatYesYesYes24:0801:30 (90)
10. Mt Hillyer3.752.801:45PM Sat09:40PM SatNoNoNo21:2701:20 (80)
11. Chilao-26.456.502:20PM Sat11:00PM SatYesYesYes22:3702:25 (145)
12. Shortcut-29.562.903:30PM Sat01:25AM SunYesNoYes17:5302:50 (170)
13. Newcomb-26.372.405:00PM Sat*NoNoNo19:5002:05 (125)
14. Chantry Flats6.178.705:50PM Sat06:20AM SunYesYesYes31:5803:15 (195)
15. Mt Wilson5.684.807:40PM Sat09:35AM SunYesNoYes16:0101:30 (90)
16. Sam Merrill6.090.508:20PM Sat11:05AM SunNoNoYes17:3001:45 (105)
17. Millard4.496.509:20PM Sat12:50PM SunNoNoYes15:5901:10 (70)
18. Loma Alta Park100.810:00PM Sat2:00PM SunYesNoYes

This is a guide based on leaving an aid station at its cut off and reaching the next at its cut off. Average pace for this 33 hour 100.8 mile race is 19 min 39 sec (19:39) per mile. Individual aid station cut off times have been adjusted for altitude gains, losses, night and last runners who finished previous races.

* If you drop at Newcomb, you will not be allowed to enter the race again unless you drop for a serious medical reason. This rule is to minimize drops at Newcomb because we do not have enough vehicles to haul you out.