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BOSTON MARATHON 2023

Michelle Ma

Bib: 22073•F

WA

Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Age Group (F45-49)
#0 / 1817
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
27:27
Rank: #19659
Start → 5K
27:27 | 8:50/mi
10K· 6.21 mi
55:12
Rank: #20115 (-456)
5K → 10K
27:45 | 8:56/mi
15K· 9.32 mi
1:22:39
Rank: #19964 (+151)
10K → 15K
27:27 | 8:50/mi
20K· 12.43 mi
1:50:36
Rank: #19859 (+105)
15K → 20K
27:57 | 9:00/mi
Half· 13.11 mi
1:56:25
Rank: #19762 (+97)
20K → Half
5:49 | 8:32/mi
25K· 15.53 mi
2:17:41
Rank: #19420 (+342)
Half → 25K
21:16 | 8:46/mi
30K· 18.64 mi
2:45:48
Rank: #19076 (+344)
25K → 30K
28:07 | 9:03/mi
20M
2:58:15
Rank: #18943 (+133)
30K → 20M
12:27 | 9:10/mi
21M
3:08:03
Rank: #18828 (+115)
20M → 21M
9:48 | 9:48/mi
35K· 21.75 mi
3:14:32
Rank: #18721 (+107)
21M → 35K
6:29 | 8:40/mi
23M
3:25:54
Rank: #18579 (+142)
35K → 23M
11:22 | 9:05/mi
24M
3:34:46
Rank: #18493 (+86)
23M → 24M
8:52 | 8:52/mi
40K· 24.85 mi
3:42:30
Rank: #18410 (+83)
24M → 40K
7:44 | 9:03/mi
25.2M
3:45:52
Rank: #18378 (+32)
40K → 25.2M
3:22 | 9:46/mi
Finish· 26.22 mi
3:55:01
Rank: #18380 (-2)
25.2M → Finish
9:09 | 8:59/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.11 mi
Time1:56:25
Pace8:53 /mi
2nd Half
Distance13.11 mi
Time1:58:36
Pace9:03 /mi
📊Positive Split: 1.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:0327:278:5027:27
8:50
-
10K
6.21 mi11:49:4855:128:5327:45
8:56
+0:06
15K
9.32 mi12:17:151:22:398:5227:27
8:50
-0:06
20K
12.43 mi12:45:121:50:368:5427:57
9:00
+0:10
Half
13.11 mi12:51:011:56:258:535:49
8:32
-0:28
25K
15.53 mi13:12:172:17:418:5221:16
8:46
+0:14
30K
18.64 mi13:40:242:45:488:5428:07
9:03
+0:17
20M
20.00 mi13:52:512:58:158:5512:27
9:10
+0:07
21M
21.00 mi14:02:393:08:038:579:48
9:48
+0:38
35K
21.75 mi14:09:083:14:328:576:29
8:40
-1:08
23M
23.00 mi14:20:303:25:548:5711:22
9:05
+0:25
24M
24.00 mi14:29:223:34:468:578:52
8:52
-0:13
40K
24.85 mi14:37:063:42:308:577:44
9:03
+0:11
25.2M
25.20 mi14:40:283:45:528:583:22
9:46
+0:43
Finish
26.22 mi14:49:373:55:018:589:09
8:59
-0:47

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

8:32 /mi

Average Pace

8:58 /mi

Slowest Pace

9:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

3:41:51

94% of race

Time at Steady Pace

13:10

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:58 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:22:0327:278:5027:27
8:50
#19659
10K
6.21 mi11:49:4855:128:5327:45
8:56
#20115
15K
9.32 mi12:17:151:22:398:5227:27
8:50
#19964
20K
12.43 mi12:45:121:50:368:5427:57
9:00
#19859
Half
13.11 mi12:51:011:56:258:535:49
8:32
#19762
25K
15.53 mi13:12:172:17:418:5221:16
8:46
#19420
30K
18.64 mi13:40:242:45:488:5428:07
9:03
#19076
20M
20.00 mi13:52:512:58:158:5512:27
9:10
#18943
21M
21.00 mi14:02:393:08:038:579:48
9:48
#18828
35K
21.75 mi14:09:083:14:328:576:29
8:40
#18721
23M
23.00 mi14:20:303:25:548:5711:22
9:05
#18579
24M
24.00 mi14:29:223:34:468:578:52
8:52
#18493
40K
24.85 mi14:37:063:42:308:577:44
9:03
#18410
25.2M
25.20 mi14:40:283:45:528:583:22
9:46
#18378
Finish
26.22 mi14:49:373:55:018:589:09
8:59
#18380
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi196597611761119707(Top 74%)7506(Top 66%)7506(Top 413%)
10K6.21 mi3.10 mi20115-4567830-2197830-21920590(Top 77%)8028(Top 70%)8028(Top 442%)
15K9.32 mi3.11 mi19964+1517714+1167714+11619707(Top 74%)7506(Top 66%)7506(Top 413%)
20K12.43 mi3.11 mi19859+1057632+827632+8219685(Top 74%)7486(Top 66%)7486(Top 412%)
Half13.11 mi0.68 mi19762+977570+627570+6217905(Top 67%)6434(Top 56%)6434(Top 354%)
25K15.53 mi2.42 mi19420+3427369+2017369+20117801(Top 67%)6462(Top 57%)6462(Top 356%)
30K18.64 mi3.11 mi19076+3447181+1887181+18817448(Top 66%)6327(Top 55%)6327(Top 348%)
20M20.00 mi1.36 mi18943+1337127+547127+5417390(Top 65%)6389(Top 56%)6389(Top 352%)
21M21.00 mi1.00 mi18828+1157070+577070+5717280(Top 65%)6357(Top 56%)6357(Top 350%)
35K21.75 mi0.75 mi18721+1077011+597011+5916293(Top 61%)5878(Top 51%)5878(Top 324%)
23M23.00 mi1.25 mi18579+1426937+746937+7416463(Top 62%)6007(Top 53%)6007(Top 331%)
24M24.00 mi1.00 mi18493+866903+346903+3416625(Top 62%)6155(Top 54%)6155(Top 339%)
40K24.85 mi0.85 mi18410+836871+326871+3216425(Top 62%)6098(Top 53%)6098(Top 336%)
25.2M25.20 mi0.35 mi18378+326859+126859+1216440(Top 62%)6134(Top 54%)6134(Top 338%)
Finish26.22 mi1.02 mi18380-26871-126871-1217903(Top 67%)6865(Top 60%)6865(Top 378%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21stories
+97ft-345ft

Overall

19707

Females

7506

F45-49

7506

5K→10K

3.1 - 6.2 mi

Top 77%
×5stories
+79ft-138ft

Overall

20590

Females

8028

F45-49

8028

10K→15K

6.2 - 9.3 mi

Top 74%
×3stories
+67ft-78ft

Overall

19707

Females

7506

F45-49

7506

15K→20K

9.3 - 12.4 mi

Top 74%
×5stories
+106ft-86ft

Overall

19685

Females

7486

F45-49

7486

20K→Half

12.4 - 13.1 mi

Top 67%
×2stories
+19ft-37ft

Overall

17905

Females

6434

F45-49

6434

Half→25K

13.1 - 15.5 mi

Top 67%
×4stories
+66ft-88ft

Overall

17801

Females

6462

F45-49

6462

25K→30K

15.5 - 18.6 mi

Top 66%
×9stories
+181ft-148ft

Overall

17448

Females

6327

F45-49

6327

30K→20M

18.6 - 20.0 mi

Top 65%
×5stories
+64ft-50ft

Overall

17390

Females

6389

F45-49

6389

20M→21M

20.0 - 21.0 mi

Top 65%
×8stories
+106ft-24ft

Overall

17280

Females

6357

F45-49

6357

21M→35K

21.0 - 21.8 mi

Top 61%
×7stories
+17ft-86ft

Overall

16293

Females

5878

F45-49

5878

35K→23M

21.8 - 23.0 mi

Top 62%
×5stories
+23ft-63ft

Overall

16463

Females

6007

F45-49

6007

23M→24M

23.0 - 24.0 mi

Top 62%
×6stories
+12ft-82ft

Overall

16625

Females

6155

F45-49

6155

24M→40K

24.0 - 24.9 mi

Top 62%
×1story
+6ft-20ft

Overall

16425

Females

6098

F45-49

6098

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

16440

Females

6134

F45-49

6134

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2stories
+22ft-21ft

Overall

17903

Females

6865

F45-49

6865

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2316
Passed By
1037
Net Change
+1279
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19659
5K → 10K140596-456#19659#20115
10K → 15K270119+151#20115#19964
15K → 20K223118+105#19964#19859
20K → Half992+97#19859#19762
Half → 25K3475+342#19762#19420
25K → 30K38137+344#19420#19076
30K → 20M15421+133#19076#18943
20M → 21M14227+115#18943#18828
21M → 35K1169+107#18828#18721
35K → 23M16422+142#18721#18579
23M → 24M9913+86#18579#18493
24M → 40K9613+83#18493#18410
40K → 25.2M375+32#18410#18378
25.2M → Finish4850-2#18378#18380
TOTALS23161037+1279
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing