Back to League Tables
MO
Mackenzie O'Brien
FemalePennsylvania2013–2025
20
Total Finishes
18
Different Races
8
States (16%)
1:54:05
PR (8:43/mi)
2:16:31
Average
-0:03:18
Faster (first to last)
Medal House
2019
OC Marathon - Half Marathon - 5K
2:05:01
#1666 overall#608 gender
2019
Rocky Run
2:33:53
#1840 overall#741 gender
2019
Philadelphia Marathon
2:35:18
#9578 overall#5038 gender
2018
Yonkers Marathon
2:06:42
#193 overall#74 gender
2018
Life Time Chicago Half Marathon + 5K
2:10:45
#3601 overall#1471 gender
2018
Philly Runfest
2:18:26
#692 overall#330 gender
2016
Rock ‘n’ Roll Philadelphia Half Marathon
2:05:56
#3703 overall#1651 gender
2016
Philadelphia Marathon
2:36:55
#8616 overall#4863 gender
2015
Bull City Race Fest
1:54:05
#633 overall#190 gender
2015
Rock ‘n’ Roll Philadelphia Half Marathon
2:09:04
#6552 overall#3161 gender
2014
Brooks Lake Sammamish Half Marathon presented by REI
2:02:10
#839 overall#433 gender
2013
Foot Traffic Flat Marathon
2:11:50
#953 overall#527 gender
Performance Timeline
Complete Race Log
| Year | Race | State | Time | Place |
|---|---|---|---|---|
| 2025 | Seattle MarathonSeattle | WA | 2:05:20 | #2056 |
| 2025 | Tobacco Road MarathonCary | NC | 2:08:32 | #860 |
| 2023 | St. Michaels Running Festival presented by Brooks (CANCELED)Saint Michaels | MD | 2:22:05 | #770 |
| 2023 | St. Michaels Running FestivalSaint Michaels | MD | 2:22:06 | #770 |
| 2022 | Frosty's Frozen Half MarathonLittleton | CO | 2:05:00 | #80 |
| 2022 | Shipyard Old Port Half MarathonPortland | ME | 2:08:50 | #864 |
| 2022 | South Shore *3 Beach Minimum" Half Marathon 2026Hull | MA | 2:19:43 | #305 |
| 2022 | Love Run Half MarathonPhiladelphia | PA | 2:20:19 | #4244 |
| 2021 | Rock Canyon Half Marathon- 40th Anniversary Run!Pueblo | CO | 2:12:34 | #251 |
| 2021 | 2025 Seattle Ghost Marathon, Half & 50KSeattle | WA | 2:22:46 | #72 |
| 2021 | Philadelphia MarathonPhiladelphia | PA | 2:32:58 | #6542 |
| 2019 | OC Marathon - Half Marathon - 5KNewport Beach | CA | 2:05:01 | #1666 |
| 2019 | Rocky RunPhiladelphia | PA | 2:33:53 | #1840 |
| 2019 | Philadelphia MarathonPhiladelphia | PA | 2:35:18 | #9578 |
| 2018 | Yonkers MarathonYonkers | NY | 2:06:42 | #193 |
| 2018 | Life Time Chicago Half Marathon + 5KChicago | IL | 2:10:45 | #3601 |
| 2018 | Philly RunfestPhiladelphia | PA | 2:18:26 | #692 |
| 2016 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 2:05:56 | #3703 |
| 2016 | Philadelphia MarathonPhiladelphia | PA | 2:36:55 | #8616 |
| 2015 | Bull City Race FestDurham | NC | 1:54:05 | #633 |
| 2015 | Rock ‘n’ Roll Philadelphia Half MarathonPhiladelphia | PA | 2:09:04 | #6552 |
| 2014 | Brooks Lake Sammamish Half Marathon presented by REIRedmond | WA | 2:02:10 | #839 |
| 2013 | Foot Traffic Flat MarathonPortland | OR | 2:11:50 | #953 |
States Raced
1 race 2 races 3-4 races 5+ races
State Breakdown
PAPennsylvania
8 racesWAWashington
3 racesCOColorado
2 racesNCNorth Carolina
2 racesMAMassachusetts
1 raceNYNew York
1 raceNJNew Jersey
0 racesSCSouth Carolina
0 races50-State Challenge
8/ 51 states + DC
43 states to go