Boston Marathon logo
BOSTON MARATHON 2023

Erin O'leary

Bib: 26343•F

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:29/mi
26:22
↑ 97↓ 3451.5%
10K· 6.21 mi
8:39/mi
53:13
↑ 79↓ 1380.4%
15K· 9.32 mi
8:37/mi
1:19:58
↑ 67↓ 78
20K· 12.43 mi
8:37/mi
1:46:44
↑ 106↓ 860.1%
Half· 13.11 mi
8:39/mi
1:52:38
↑ 19↓ 370.5%
25K· 15.53 mi
8:45/mi
2:13:50
↑ 66↓ 880.2%
30K· 18.64 mi
8:59/mi
2:41:46
↑ 181↓ 1480.2%
20M
9:16/mi
2:54:21
↑ 64↓ 500.2%
21M
10:00/mi
3:04:21
↑ 106↓ 241.6%
35K· 21.75 mi
9:01/mi
3:11:06
↑ 17↓ 861.7%
23M
9:31/mi
3:23:01
↑ 23↓ 630.6%
24M
9:08/mi
3:32:09
↓ 821.3%
40K· 24.85 mi
9:19/mi
3:40:07
↓ 200.3%
25.2M
9:49/mi
3:43:30
↑ 13↓ 160.2%
Finish· 26.22 mi
9:05/mi
3:52:45
↑ 22↓ 21

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:38
Pace8:35 /mi
2nd Half
Distance13.11 mi
Time2:00:07
Pace9:10 /mi
📊Positive Split: 6.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:0926:228:2926:22
8:29
-
10K
6.21 mi12:14:0053:138:3426:51
8:39
+0:10
15K
9.32 mi12:40:451:19:588:3526:45
8:37
-0:02
20K
12.43 mi13:07:311:46:448:3526:46
8:37
0:00
Half
13.11 mi13:13:251:52:388:355:54
8:39
+0:02
25K
15.53 mi13:34:372:13:508:3721:12
8:45
+0:06
30K
18.64 mi14:02:332:41:468:4127:56
8:59
+0:14
20M
20.00 mi14:15:082:54:218:4312:35
9:16
+0:17
21M
21.00 mi14:25:083:04:218:4710:00
10:00
+0:44
35K
21.75 mi14:31:533:11:068:476:45
9:01
-0:59
23M
23.00 mi14:43:483:23:018:5011:55
9:31
+0:30
24M
24.00 mi14:52:563:32:098:509:08
9:08
-0:23
40K
24.85 mi15:00:543:40:078:517:58
9:19
+0:11
25.2M
25.20 mi15:04:173:43:308:523:23
9:49
+0:30
Finish
26.22 mi15:13:323:52:458:539:15
9:05
-0:44

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

8:29 /mi

Average Pace

8:53 /mi

Slowest Pace

10:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:27:27

89% of race

Time at Steady Pace

25:18

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:53 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:47:0926:228:2926:22
8:29
#17483
10K
6.21 mi12:14:0053:138:3426:51
8:39
#18295
15K
9.32 mi12:40:451:19:588:3526:45
8:37
#18363
20K
12.43 mi13:07:311:46:448:3526:46
8:37
#18139
Half
13.11 mi13:13:251:52:388:355:54
8:39
#18158
25K
15.53 mi13:34:372:13:508:3721:12
8:45
#18048
30K
18.64 mi14:02:332:41:468:4127:56
8:59
#17840
20M
20.00 mi14:15:082:54:218:4312:35
9:16
#17829
21M
21.00 mi14:25:083:04:218:4710:00
10:00
#17857
35K
21.75 mi14:31:533:11:068:476:45
9:01
#17873
23M
23.00 mi14:43:483:23:018:5011:55
9:31
#17930
24M
24.00 mi14:52:563:32:098:509:08
9:08
#17933
40K
24.85 mi15:00:543:40:078:517:58
9:19
#17926
25.2M
25.20 mi15:04:173:43:308:523:23
9:49
#17901
Finish
26.22 mi15:13:323:52:458:539:15
9:05
#17930
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi174836243624318522(Top 70%)6815(Top 60%)6815(Top 140%)
10K6.21 mi3.10 mi18295-8126693-4506693-45019104(Top 72%)7143(Top 63%)7143(Top 146%)
15K9.32 mi3.11 mi18363-686726-336726-3318522(Top 70%)6815(Top 60%)6815(Top 140%)
20K12.43 mi3.11 mi18139+2246596+1306596+13017602(Top 66%)6290(Top 55%)6290(Top 129%)
Half13.11 mi0.68 mi18158-196608-126608-1218639(Top 70%)6853(Top 60%)6853(Top 140%)
25K15.53 mi2.42 mi18048+1106562+466562+4617643(Top 66%)6366(Top 56%)6366(Top 130%)
30K18.64 mi3.11 mi17840+2086464+986464+9817135(Top 64%)6149(Top 54%)6149(Top 126%)
20M20.00 mi1.36 mi17829+116478-146478-1417852(Top 67%)6663(Top 58%)6663(Top 136%)
21M21.00 mi1.00 mi17857-286506-286506-2818036(Top 68%)6784(Top 59%)6784(Top 139%)
35K21.75 mi0.75 mi17873-166525-196525-1918017(Top 68%)6848(Top 60%)6848(Top 140%)
23M23.00 mi1.25 mi17930-576577-526577-5218405(Top 69%)7077(Top 62%)7077(Top 145%)
24M24.00 mi1.00 mi17933-36585-86585-817815(Top 67%)6808(Top 60%)6808(Top 139%)
40K24.85 mi0.85 mi17926+76592-76592-717621(Top 66%)6751(Top 59%)6751(Top 138%)
25.2M25.20 mi0.35 mi17901+256576+166576+1616656(Top 63%)6245(Top 55%)6245(Top 128%)
Finish26.22 mi1.02 mi17930-296613-376613-3718381(Top 69%)7102(Top 62%)7102(Top 145%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21story building
+97ft-345ft

Overall

18522

Females

6815

F18-39

6815

5K→10K

3.1 - 6.2 mi

Top 72%
×5story building
+79ft-138ft

Overall

19104

Females

7143

F18-39

7143

10K→15K

6.2 - 9.3 mi

Top 70%
×3story building
+67ft-78ft

Overall

18522

Females

6815

F18-39

6815

15K→20K

9.3 - 12.4 mi

Top 66%
×5story building
+106ft-86ft

Overall

17602

Females

6290

F18-39

6290

20K→Half

12.4 - 13.1 mi

Top 70%
×2story building
+19ft-37ft

Overall

18639

Females

6853

F18-39

6853

Half→25K

13.1 - 15.5 mi

Top 66%
×4story building
+66ft-88ft

Overall

17643

Females

6366

F18-39

6366

25K→30K

15.5 - 18.6 mi

Top 64%
×9story building
+181ft-148ft

Overall

17135

Females

6149

F18-39

6149

30K→20M

18.6 - 20.0 mi

Top 67%
×5story building
+64ft-50ft

Overall

17852

Females

6663

F18-39

6663

20M→21M

20.0 - 21.0 mi

Top 68%
×8story building
+106ft-24ft

Overall

18036

Females

6784

F18-39

6784

21M→35K

21.0 - 21.8 mi

Top 68%
×7story building
+17ft-86ft

Overall

18017

Females

6848

F18-39

6848

35K→23M

21.8 - 23.0 mi

Top 69%
×5story building
+23ft-63ft

Overall

18405

Females

7077

F18-39

7077

23M→24M

23.0 - 24.0 mi

Top 67%
×6story building
+12ft-82ft

Overall

17815

Females

6808

F18-39

6808

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

17621

Females

6751

F18-39

6751

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

16656

Females

6245

F18-39

6245

25.2M→Finish

25.2 - 26.2 mi

Top 69%
×2story building
+22ft-21ft

Overall

18381

Females

7102

F18-39

7102

Passing Analysis

Category:
Athletes Passed
1481
Passed By
1928
Net Change
-447
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17483
5K → 10K69881-812#17483#18295
10K → 15K160228-68#18295#18363
15K → 20K28258+224#18363#18139
20K → Half2140-19#18139#18158
Half → 25K18676+110#18158#18048
25K → 30K29486+208#18048#17840
30K → 20M9786+11#17840#17829
20M → 21M75103-28#17829#17857
21M → 35K4359-16#17857#17873
35K → 23M69126-57#17873#17930
23M → 24M4851-3#17930#17933
24M → 40K5649+7#17933#17926
40K → 25.2M3914+25#17926#17901
25.2M → Finish4271-29#17901#17930
TOTALS14811928-447
📊

Passing Visuals

Category:
Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing