Boston Marathon logo
BOSTON MARATHON 2023

Meghan Breslow

Bib: 26632•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

Start
0:00:00
Race begins
5K· 3.11 mi
28:18
Rank: #20905
Start → 5K
28:18 | 9:07/mi
10K· 6.21 mi
55:09
Rank: #20065 (+840)
5K → 10K
26:51 | 8:39/mi
15K· 9.32 mi
1:22:13
Rank: #19713 (+352)
10K → 15K
27:04 | 8:43/mi
20K· 12.43 mi
1:49:58
Rank: #19582 (+131)
15K → 20K
27:45 | 8:56/mi
Half· 13.11 mi
1:56:04
Rank: #19620 (-38)
20K → Half
6:06 | 8:56/mi
25K· 15.53 mi
2:18:53
Rank: #19844 (-224)
Half → 25K
22:49 | 9:25/mi
30K· 18.64 mi
2:49:23
Rank: #19991 (-147)
25K → 30K
30:30 | 9:49/mi
20M
3:03:01
Rank: #20052 (-61)
30K → 20M
13:38 | 10:02/mi
21M
3:13:34
Rank: #20025 (+27)
20M → 21M
10:33 | 10:33/mi
35K· 21.75 mi
3:20:37
Rank: #20002 (+23)
21M → 35K
7:03 | 9:25/mi
23M
3:33:36
Rank: #20091 (-89)
35K → 23M
12:59 | 10:22/mi
24M
3:43:49
Rank: #20149 (-58)
23M → 24M
10:13 | 10:13/mi
40K· 24.85 mi
3:52:39
Rank: #20183 (-34)
24M → 40K
8:50 | 10:20/mi
25.2M
3:56:17
Rank: #20163 (+20)
40K → 25.2M
3:38 | 10:32/mi
Finish· 26.22 mi
4:05:35
Rank: #20099 (+64)
25.2M → Finish
9:18 | 9:08/mi

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
Time1:56:04
Pace8:51 /mi
2nd Half
Distance13.11 mi
Time2:09:31
Pace9:53 /mi
📊Positive Split: 11.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:5128:189:0728:18
9:07
-
10K
6.21 mi12:11:4255:098:5326:51
8:39
-0:28
15K
9.32 mi12:38:461:22:138:4927:04
8:43
+0:04
20K
12.43 mi13:06:311:49:588:5127:45
8:56
+0:13
Half
13.11 mi13:12:371:56:048:516:06
8:56
0:00
25K
15.53 mi13:35:262:18:538:5622:49
9:25
+0:29
30K
18.64 mi14:05:562:49:239:0530:30
9:49
+0:24
20M
20.00 mi14:19:343:03:019:0913:38
10:02
+0:13
21M
21.00 mi14:30:073:13:349:1310:33
10:33
+0:31
35K
21.75 mi14:37:103:20:379:137:03
9:25
-1:08
23M
23.00 mi14:50:093:33:369:1712:59
10:22
+0:57
24M
24.00 mi15:00:223:43:499:2010:13
10:13
-0:09
40K
24.85 mi15:09:123:52:399:228:50
10:20
+0:07
25.2M
25.20 mi15:12:503:56:179:233:38
10:32
+0:12
Finish
26.22 mi15:22:084:05:359:229:18
9:08
-1:24

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

8:39 /mi

Average Pace

9:22 /mi

Slowest Pace

10:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:27:46

36% of race

Time at Steady Pace

1:07:28

27% of race

Time at Slower Pace

1:30:21

37% of race

Average Pace: 9:22 /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 mi11:44:5128:189:0728:18
9:07
#20905
10K
6.21 mi12:11:4255:098:5326:51
8:39
#20065
15K
9.32 mi12:38:461:22:138:4927:04
8:43
#19713
20K
12.43 mi13:06:311:49:588:5127:45
8:56
#19582
Half
13.11 mi13:12:371:56:048:516:06
8:56
#19620
25K
15.53 mi13:35:262:18:538:5622:49
9:25
#19844
30K
18.64 mi14:05:562:49:239:0530:30
9:49
#19991
20M
20.00 mi14:19:343:03:019:0913:38
10:02
#20052
21M
21.00 mi14:30:073:13:349:1310:33
10:33
#20025
35K
21.75 mi14:37:103:20:379:137:03
9:25
#20002
23M
23.00 mi14:50:093:33:369:1712:59
10:22
#20091
24M
24.00 mi15:00:223:43:499:2010:13
10:13
#20149
40K
24.85 mi15:09:123:52:399:228:50
10:20
#20183
25.2M
25.20 mi15:12:503:56:179:233:38
10:32
#20163
Finish
26.22 mi15:22:084:05:359:229:18
9:08
#20099
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi209058322832219060(Top 72%)7143(Top 63%)7143(Top 146%)
10K6.21 mi3.10 mi20065+8407803+5197803+51919108(Top 72%)7147(Top 63%)7147(Top 146%)
15K9.32 mi3.11 mi19713+3527573+2307573+23019060(Top 72%)7143(Top 63%)7143(Top 146%)
20K12.43 mi3.11 mi19582+1317477+967477+9619387(Top 73%)7318(Top 64%)7318(Top 150%)
Half13.11 mi0.68 mi19620-387496-197496-1920231(Top 76%)7802(Top 68%)7802(Top 160%)
25K15.53 mi2.42 mi19844-2247632-1367632-13620551(Top 77%)8016(Top 70%)8016(Top 164%)
30K18.64 mi3.11 mi19991-1477725-937725-9320503(Top 77%)8057(Top 71%)8057(Top 165%)
20M20.00 mi1.36 mi20052-617775-507775-5020571(Top 77%)8171(Top 72%)8171(Top 167%)
21M21.00 mi1.00 mi20025+277765+107765+1019750(Top 74%)7791(Top 68%)7791(Top 160%)
35K21.75 mi0.75 mi20002+237753+127753+1219649(Top 74%)7734(Top 68%)7734(Top 158%)
23M23.00 mi1.25 mi20091-897822-697822-6921002(Top 79%)8524(Top 75%)8524(Top 175%)
24M24.00 mi1.00 mi20149-587864-427864-4221374(Top 80%)8768(Top 77%)8768(Top 180%)
40K24.85 mi0.85 mi20183-347891-277891-2720833(Top 78%)8509(Top 74%)8509(Top 174%)
25.2M25.20 mi0.35 mi20163+207888+37888+319255(Top 72%)7650(Top 67%)7650(Top 157%)
Finish26.22 mi1.02 mi20099+647859+297859+2918601(Top 70%)7231(Top 63%)7231(Top 148%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21stories
+97ft-345ft

Overall

19060

Females

7143

F18-39

7143

5K→10K

3.1 - 6.2 mi

Top 72%
×5stories
+79ft-138ft

Overall

19108

Females

7147

F18-39

7147

10K→15K

6.2 - 9.3 mi

Top 72%
×3stories
+67ft-78ft

Overall

19060

Females

7143

F18-39

7143

15K→20K

9.3 - 12.4 mi

Top 73%
×5stories
+106ft-86ft

Overall

19387

Females

7318

F18-39

7318

20K→Half

12.4 - 13.1 mi

Top 76%
×2stories
+19ft-37ft

Overall

20231

Females

7802

F18-39

7802

Half→25K

13.1 - 15.5 mi

Top 77%
×4stories
+66ft-88ft

Overall

20551

Females

8016

F18-39

8016

25K→30K

15.5 - 18.6 mi

Top 77%
×9stories
+181ft-148ft

Overall

20503

Females

8057

F18-39

8057

30K→20M

18.6 - 20.0 mi

Top 77%
×5stories
+64ft-50ft

Overall

20571

Females

8171

F18-39

8171

20M→21M

20.0 - 21.0 mi

Top 74%
×8stories
+106ft-24ft

Overall

19750

Females

7791

F18-39

7791

21M→35K

21.0 - 21.8 mi

Top 74%
×7stories
+17ft-86ft

Overall

19649

Females

7734

F18-39

7734

35K→23M

21.8 - 23.0 mi

Top 79%
×5stories
+23ft-63ft

Overall

21002

Females

8524

F18-39

8524

23M→24M

23.0 - 24.0 mi

Top 80%
×6stories
+12ft-82ft

Overall

21374

Females

8768

F18-39

8768

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

20833

Females

8509

F18-39

8509

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

19255

Females

7650

F18-39

7650

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2stories
+22ft-21ft

Overall

18601

Females

7231

F18-39

7231

Passing Analysis

Category:
Athletes Passed
2167
Passed By
1361
Net Change
+806
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20905
5K → 10K91777+840#20905#20065
10K → 15K41664+352#20065#19713
15K → 20K231100+131#19713#19582
20K → Half2058-38#19582#19620
Half → 25K54278-224#19620#19844
25K → 30K112259-147#19844#19991
30K → 20M64125-61#19991#20052
20M → 21M9467+27#20052#20025
21M → 35K4724+23#20025#20002
35K → 23M51140-89#20002#20091
23M → 24M2583-58#20091#20149
24M → 40K3468-34#20149#20183
40K → 25.2M277+20#20183#20163
25.2M → Finish7511+64#20163#20099
TOTALS21671361+806
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

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
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing