USARunning100mi · 160.9 km / 100.0 mi10K · 10 km / 6.2 mi50K · 50 km / 31.1 mi50mi · 80.5 km / 50.0 miHalf · 21.1 km / 13.1 mi

Endless Day Backyard Ultra

Richfield, Utah · USA

When is the next Endless Day Backyard Ultra?

Sat, 19 Jun 2027

6 distances · see start times below

Race website Entry details Suggest an edit Calendar

Did you race this?

Claim your results, or create your free athlete profile.

Claim my results Create my profile

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.

Half · 2027-06-19: Not yet verified for this edition. Check the official race instructions.
Marathon · 2027-06-19: Not yet verified for this edition. Check the official race instructions.
10K · 2027-06-19: Not yet verified for this edition. Check the official race instructions.
100mi · 2027-06-19: Not yet verified for this edition. Check the official race instructions.
50mi · 2027-06-19: Not yet verified for this edition. Check the official race instructions.
50K · 2027-06-19: Not yet verified for this edition. Check the official race instructions.

About Endless Day Backyard Ultra

Endless Day Backyard Ultra is a running event in Richfield, Utah, United States. Recorded disciplines include 100mi, 10K, 50K, 50mi, half marathon. The next listed date is Saturday, 19 June 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.

Half · 21.1 km / 13.1 mi
Sat, 19 Jun 2027
Starts 06:00 GMT-6
Entries open
Entry details
Add to calendar
Endless Day Backyard Ultra · Half · 21.1 km / 13.1 mi
2027-06-19 · 06:00 (America/Denver)
Venue / race area: Richfield, Utah, United States
Race website
Start reminder only; finish time is not confirmed. Adjust the calendar duration if needed.
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
Endless Day Backyard Ultra · Half · 21.1 km / 13.1 mi
WhatsApp Facebook X Telegram Email
Choose where to share, then select who to send it to.
Date and distance "1/2 Marathon" with 06:00 start confirmed on the event's UltraSignup entry page for the 2027 edition (checked 2026-11-09). Registration shown as open. Local time America/Denver.
Edition source
Marathon · 42.2 km / 26.2 mi
Sat, 19 Jun 2027
Starts 06:00 GMT-6
Entries open
Entry details
Add to calendar
Endless Day Backyard Ultra · Marathon · 42.2 km / 26.2 mi
2027-06-19 · 06:00 (America/Denver)
Venue / race area: Richfield, Utah, United States
Race website
Start reminder only; finish time is not confirmed. Adjust the calendar duration if needed.
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
Endless Day Backyard Ultra · Marathon · 42.2 km / 26.2 mi
WhatsApp Facebook X Telegram Email
Choose where to share, then select who to send it to.
Date and distance "Marathon" with 06:00 start confirmed on the event's UltraSignup entry page for the 2027 edition (checked 2026-11-09). Registration shown as open. Local time America/Denver.
Edition source
10K · 10 km / 6.2 mi
Sat, 19 Jun 2027
Starts 06:00 GMT-6
Entries open
Entry details
Add to calendar
Endless Day Backyard Ultra · 10K · 10 km / 6.2 mi
2027-06-19 · 06:00 (America/Denver)
Venue / race area: Richfield, Utah, United States
Race website
Start reminder only; finish time is not confirmed. Adjust the calendar duration if needed.
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
Endless Day Backyard Ultra · 10K · 10 km / 6.2 mi
WhatsApp Facebook X Telegram Email
Choose where to share, then select who to send it to.
Date and distance "10K" with 06:00 start confirmed on the event's UltraSignup entry page for the 2027 edition (checked 2026-11-09). Registration shown as open. Local time America/Denver.
Edition source
100mi · 160.9 km / 100.0 mi
Sat, 19 Jun 2027
Starts 06:00 GMT-6
Entries open
Entry details
Add to calendar
Endless Day Backyard Ultra · 100mi · 160.9 km / 100.0 mi
2027-06-19 · 06:00 (America/Denver)
Venue / race area: Richfield, Utah, United States
Race website
Start reminder only; finish time is not confirmed. Adjust the calendar duration if needed.
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
Endless Day Backyard Ultra · 100mi · 160.9 km / 100.0 mi
WhatsApp Facebook X Telegram Email
Choose where to share, then select who to send it to.
Date and distance "100M" with 06:00 start confirmed on the event's UltraSignup entry page for the 2027 edition (checked 2026-11-09). Registration shown as open. Local time America/Denver.
Edition source
50mi · 80.5 km / 50.0 mi
Sat, 19 Jun 2027
Starts 06:00 GMT-6
Entries open
Entry details
Add to calendar
Endless Day Backyard Ultra · 50mi · 80.5 km / 50.0 mi
2027-06-19 · 06:00 (America/Denver)
Venue / race area: Richfield, Utah, United States
Race website
Start reminder only; finish time is not confirmed. Adjust the calendar duration if needed.
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
Endless Day Backyard Ultra · 50mi · 80.5 km / 50.0 mi
WhatsApp Facebook X Telegram Email
Choose where to share, then select who to send it to.
Date and distance "50M" with 06:00 start confirmed on the event's UltraSignup entry page for the 2027 edition (checked 2026-11-09). Registration shown as open. Local time America/Denver.
Edition source
50K · 50 km / 31.1 mi
Sat, 19 Jun 2027
Starts 06:00 GMT-6
Entries open
Entry details
Add to calendar
Endless Day Backyard Ultra · 50K · 50 km / 31.1 mi
2027-06-19 · 06:00 (America/Denver)
Venue / race area: Richfield, Utah, United States
Race website
Start reminder only; finish time is not confirmed. Adjust the calendar duration if needed.
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
Endless Day Backyard Ultra · 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 "50K" with 06:00 start confirmed on the event's UltraSignup entry page for the 2027 edition (checked 2026-11-09). Registration shown as open. Local time America/Denver.
Edition source

Location & race day

Listed venue / area

Richfield, UtahUSA

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

Endless Day Backyard Ultra is held near Richfield, Utah. The 2027 edition lists the following distances on its UltraSignup entry page: 50K, 50M, 100M, 10K, 1/2 Marathon, Marathon. Entries are taken through UltraSignup.

Race website

Entry options for

Ways to enter

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

Sat, 19 Jun 2027

Official race entry

Official entry

Entries open

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 Endless Day Backyard Ultra is 19 June 2027.

Where is it held?

Endless Day Backyard Ultra is listed in Richfield, Utah, United States. Check the event's race-day instructions for the exact start location.

Which distances are listed?

The programme listed for 19 June 2027 includes Half marathon, Marathon, 10K, 100mi, 50mi, 50K.

What time does it start?

Listed starts for 19 June 2027: Half marathon: 06:00 GMT-6; Marathon: 06:00 GMT-6; 10K: 06:00 GMT-6; 100mi: 06:00 GMT-6; 50mi: 06:00 GMT-6; 50K: 06:00 GMT-6. Times are local to the race venue. Follow the start or wave assigned to your entry.