USARunningTrail10K · 10 km / 6.2 mi25K · 25 km / 15.5 mi50K · 50 km / 31.1 mi5K · 5 km / 3.1 mi

O'Brien Trail Races

Marine on St Croix, Minnesota · USA

When is the next O'Brien Trail Races?

Sat, 25 Sept 2027

4 distances · see start times below

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Time limits and cut-offs

Some events have a finishing deadline or intermediate checkpoint cut-offs. These can vary by distance, start wave and edition.

10K · 2027-09-25: Not yet verified for this edition. Check the official race instructions.
5K · 2027-09-25: Not yet verified for this edition. Check the official race instructions.
25K · 2027-09-25: Not yet verified for this edition. Check the official race instructions.
50K · 2027-09-25: Not yet verified for this edition. Check the official race instructions.

About O'Brien Trail Races

O'Brien Trail Races is a running event in Marine on St Croix, Minnesota, United States. Recorded disciplines include 10K, 25K, 50K, 5K. The listed surface is trail. The listed organiser is True North Adventures. The next listed date is Saturday, 25 September 2027. Check the organiser's information for entry and race-day arrangements.

Dates, starts & entry

Times are local to the race. Select the entry route for your distance.

10K · 10 km / 6.2 mi
Sat, 25 Sept 2027
Start time not yet verified
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O'Brien Trail Races · 10K · 10 km / 6.2 mi
2027-09-25 · Date-only reminder
Venue / race area: Marine on St Croix, Minnesota, United States
Race website
Date-only reminder: start time to be confirmed.
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O'Brien Trail Races · 10K · 10 km / 6.2 mi
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Date and distance list (50K, 25k, 10K, 5k) confirmed on the organiser's UltraSignup registration page for the 2027 edition (checked 2026-11-09). Local time America/Chicago.
Edition source
5K · 5 km / 3.1 mi
Sat, 25 Sept 2027
Start time not yet verified
Confirm date and entry availability with the organiser
Entry details
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O'Brien Trail Races · 5K · 5 km / 3.1 mi
2027-09-25 · Date-only reminder
Venue / race area: Marine on St Croix, Minnesota, United States
Race website
Date-only reminder: start time to be confirmed.
Google Calendar Outlook.com Microsoft 365 Apple Calendar
Google and Outlook open a prepared event for you to save. Apple uses your private AthRecs race subscription. Download a one-off file only if you prefer to import it yourself.
Share
Share this race
O'Brien Trail Races · 5K · 5 km / 3.1 mi
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Choose where to share, then select who to send it to.
Date and distance list (50K, 25k, 10K, 5k) confirmed on the organiser's UltraSignup registration page for the 2027 edition (checked 2026-11-09). Local time America/Chicago.
Edition source
25K · 25 km / 15.5 mi
Sat, 25 Sept 2027
Start time not yet verified
Confirm date and entry availability with the organiser
Entry details
Add to calendar
O'Brien Trail Races · 25K · 25 km / 15.5 mi
2027-09-25 · Date-only reminder
Venue / race area: Marine on St Croix, Minnesota, United States
Race website
Date-only reminder: start time to be confirmed.
Google Calendar Outlook.com Microsoft 365 Apple Calendar
Google and Outlook open a prepared event for you to save. Apple uses your private AthRecs race subscription. Download a one-off file only if you prefer to import it yourself.
Share
Share this race
O'Brien Trail Races · 25K · 25 km / 15.5 mi
WhatsApp Facebook X Telegram Email
Choose where to share, then select who to send it to.
Date and distance list (50K, 25k, 10K, 5k) confirmed on the organiser's UltraSignup registration page for the 2027 edition (checked 2026-11-09). Local time America/Chicago.
Edition source
50K · 50 km / 31.1 mi
Sat, 25 Sept 2027
Start time not yet verified
Confirm date and entry availability with the organiser
Entry details
Add to calendar
O'Brien Trail Races · 50K · 50 km / 31.1 mi
2027-09-25 · Date-only reminder
Venue / race area: Marine on St Croix, Minnesota, United States
Race website
Date-only reminder: start time to be confirmed.
Google Calendar Outlook.com Microsoft 365 Apple Calendar
Google and Outlook open a prepared event for you to save. Apple uses your private AthRecs race subscription. Download a one-off file only if you prefer to import it yourself.
Share
Share this race
O'Brien Trail Races · 50K · 50 km / 31.1 mi
WhatsApp Facebook X Telegram Email
Choose where to share, then select who to send it to.
Date and distance list (50K, 25k, 10K, 5k) confirmed on the organiser's UltraSignup registration page for the 2027 edition (checked 2026-11-09). Local time America/Chicago.
Edition source

Location & race day

Listed venue / area

Marine on St Croix, MinnesotaUSA

Find this location on a map

Confirm the exact start line, parking and arrival instructions with the organiser. A listed town or postcode may cover a wider area.

About the race

O'Brien Trail Races is listed on UltraSignup for 2027 near Marine on St Croix, Minnesota, with the following distances or formats: 50K, 25k, 10K, 5k. Organised by True North Adventures.

Surface:: Trail
Organiser:: True North Adventures

Race website

Entry options for

Ways to enter

Compare the listed booking routes. Verified links show when they were checked.

Sat, 25 Sept 2027

Official race entry

Official entry

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Recorded Mon, 9 Nov 2026

View Official race entry

Third-party prices, booking fees, allocations and refund terms can differ. Confirm the final details with the provider before paying.

Race questions

When is the next event?

The next listed date for O'Brien Trail Races is 25 September 2027.

Where is it held?

O'Brien Trail Races is listed in Marine on St Croix, Minnesota, United States. Check the event's race-day instructions for the exact start location.

Which distances are listed?

The programme listed for 25 September 2027 includes 10K, 5K, 25K, 50K.

What time does it start?

Listed starts for 25 September 2027: 10K: start time not yet verified; 5K: start time not yet verified; 25K: start time not yet verified; 50K: start time not yet verified. Times are local to the race venue. Follow the start or wave assigned to your entry.