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Old Pueblo Endurance Runs, Sonoita

Trail · 80.5 km · United States

Old Pueblo Endurance Runs

Sonoita · Sat, Mar 6, 2027 · Start 08:00 AM129d13h19m

  • Trail running
  • Ultramarathon
  • Arizona Trail
  • historic course

One of the oldest trail ultramarathons in Arizona, set in the scenic Santa Rita Mountains with starts at the historic Kentucky Camp mining site.

Race month

March · 41°–65°

Field size

350–800

Distances

80.5k, 40.2k

Distances

  • Trail

    50 mile loop

    80.5 km

    Start: Jan 3, 02:00 AM

  • Trail

    25 mile loop

    40.2 km

    Start: 08:00 AM

Finish-time calculator

Your finish time

Slide to your target pace — and see when you’ll hit the line.

6:00

min / km

← faster · 2:0012:00 · easier →

8:02:49

Estimated finish · 80.5 km

10 km1:00:00
5 km30:00

Where am I when? · Splits

Start
0:00
5 km
30:00
10 km
1:00:00
15 km
1:30:00
20 km
2:00:00
25 km
2:30:00
30 km
3:00:00
35 km
3:30:00
40 km
4:00:00
45 km
4:30:00
50 km
5:00:00
55 km
5:30:00
60 km
6:00:00
65 km
6:30:00
70 km
7:00:00
75 km
7:30:00
Finish
8:02:49

Estimates only · form, weather, and hills can change the result.

Course & climate

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What to expect

What makes this race distinct — for training and race day.

One of the oldest trail ultramarathons in Arizona, set in the scenic Santa Rita Mountains with starts at the historic Kentucky Camp mining site.

  • The field

    350–800

  • Catering & aid stations

    Water, electrolyte drink, potatoes, oranges, bananas, chips, M&Ms, pretzels, PB&J sandwiches, Coke, V-8, and soup available at aid stations. No electrolyte tablets provided.

  • Pacers

    Pacers are allowed for 50-mile runners aged 60 and older on the second loop. Pacers must check in and start their pacing duties at Kentucky Camp at the race start.

What does it cost?

What's included in entry

  • Support included
  • Aid stations
  • Drop bags
  • Finisher medal
  • Event shirt

Stay & get to the start

Getting there

Assumed starting point

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Estimating travel…

Hotels near the start

Route maps

FAQ

What are the time limits?

25 mile: 7 hours; 50 mile: 15 hours. All 50-mile runners must complete the first loop by 1:00 PM.

Are drop bags allowed?

Yes, drop bags are permitted at all aid stations for 50-mile runners and must be placed in the designated bins with name, aid station, and bib number.

Is crew access allowed at all aid stations?

No, crew access is not allowed at Melendrez Pass aid station; runners will be disqualified if crew is present there.

Last updated: Jun 5, 2026, 11:37:29 PM

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