Austin's Backyard Ultra
run any distance 4.17 miles (1 loop) or more. Other race distance Equivalents:
Half Marathon (13.1): Complete 4 loops
Marathon (26.2): Complete 7 loops
50K (31 miles): Complete 8 loops
50 Miles: Complete 12 loops
100K (62 miles): Complete 15 loops
100 Miles: Complete 24 loops
Half Marathon (13.1): Complete 4 loops
Marathon (26.2): Complete 7 loops
50K (31 miles): Complete 8 loops
50 Miles: Complete 12 loops
100K (62 miles): Complete 15 loops
100 Miles: Complete 24 loops
- Start Time:
- 7:00am CDT
- Price:
- $109 $95.00 Race Fee + $6.70 SignUp Fee
- Registration:
- Price increases to $109.00 after December 28, 2025 at 11:59pm CST
| Registration Starting | Registration Ending | Price |
|---|---|---|
| May 29, 2025, 6:46am CDT | December 28, 2025, 11:59pm CST | $109 $95.00 Race Fee + $6.70 SignUp Fee |
| December 29, 2025, 12:00am CST | February 27, 2026, 11:59pm CST | $129 $109.00 Race Fee + $7.54 SignUp Fee |
| February 28, 2026, 12:00am CST | April 28, 2026, 11:59pm CDT | $169 $129.00 Race Fee + $8.74 SignUp Fee |
| April 29, 2026, 12:00am CDT | May 13, 2026, 11:59pm CDT | $189 $169.00 Race Fee + $11.14 SignUp Fee |
| May 14, 2026, 12:00am CDT | May 21, 2026, 6:00pm CDT | $189.00 Race Fee + $12.34 SignUp Fee |
Memorial Day Remembrance Marathon
- Start Time:
- 7:00am CDT
- End Time:
- 5:00pm CDT
- Price:
- $99 $89.00 Race Fee + $6.34 SignUp Fee
- Registration:
- Price increases to $99.00 after December 28, 2025 at 11:59pm CST
| Registration Starting | Registration Ending | Price |
|---|---|---|
| May 29, 2025, 5:06am CDT | December 28, 2025, 11:59pm CST | $99 $89.00 Race Fee + $6.34 SignUp Fee |
| December 29, 2025, 12:00am CST | February 26, 2026, 11:59pm CST | $109 $99.00 Race Fee + $6.94 SignUp Fee |
| February 27, 2026, 12:00am CST | April 28, 2026, 11:59pm CDT | $119 $109.00 Race Fee + $7.54 SignUp Fee |
| April 29, 2026, 12:00am CDT | May 13, 2026, 11:59pm CDT | $129 $119.00 Race Fee + $8.14 SignUp Fee |
| May 14, 2026, 12:00am CDT | May 21, 2026, 11:59pm CDT | $129.00 Race Fee + $8.74 SignUp Fee |
Memorial Day Remembrance Half-Marathon
- Start Time:
- 7:00am CDT
- End Time:
- 5:00pm CDT
- Price:
- $79 $69.00 Race Fee + $5.14 SignUp Fee
- Registration:
- Price increases to $79.00 after December 28, 2025 at 11:59pm CST
| Registration Starting | Registration Ending | Price |
|---|---|---|
| May 29, 2025, 5:06am CDT | December 28, 2025, 11:59pm CST | $79 $69.00 Race Fee + $5.14 SignUp Fee |
| December 29, 2025, 12:00am CST | February 26, 2026, 11:59pm CST | $89 $79.00 Race Fee + $5.74 SignUp Fee |
| February 27, 2026, 12:00am CST | April 28, 2026, 11:59pm CDT | $99 $89.00 Race Fee + $6.34 SignUp Fee |
| April 29, 2026, 12:00am CDT | May 13, 2026, 11:59pm CDT | $109 $99.00 Race Fee + $6.94 SignUp Fee |
| May 14, 2026, 12:00am CDT | May 21, 2026, 11:59pm CDT | $109.00 Race Fee + $7.54 SignUp Fee |
This is a service fee for processing your registration. This may be slightly higher or lower per registrant than the amount shown here.
