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BOSTON MARATHON 2023

Martina Cwojdzinski

Bib: 31579•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F40-44)
#0 / 1878
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
10:11/mi
31:37
↑ 97↓ 3451.5%
10K· 6.21 mi
10:02/mi
1:02:48
↑ 79↓ 1380.4%
15K· 9.32 mi
9:48/mi
1:33:14
↑ 67↓ 78
20K· 12.43 mi
9:45/mi
2:03:30
↑ 106↓ 860.1%
Half· 13.11 mi
9:39/mi
2:10:05
↑ 19↓ 370.5%
25K· 15.53 mi
10:16/mi
2:34:59
↑ 66↓ 880.2%
30K· 18.64 mi
10:33/mi
3:07:46
↑ 181↓ 1480.2%
20M
10:37/mi
3:22:11
↑ 64↓ 500.2%
21M
13:02/mi
3:35:13
↑ 106↓ 241.6%
35K· 21.75 mi
9:37/mi
3:42:25
↑ 17↓ 861.7%
23M
12:29/mi
3:58:03
↑ 23↓ 630.6%
24M
10:23/mi
4:08:26
↓ 821.3%
40K· 24.85 mi
10:06/mi
4:17:04
↓ 200.3%
25.2M
15:25/mi
4:22:23
↑ 13↓ 160.2%
Finish· 26.22 mi
10:08/mi
4:32:43
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:10:05
Pace9:55 /mi
2nd Half
Distance13.11 mi
Time2:22:38
Pace10:53 /mi
📊Positive Split: 9.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:53:0231:3710:1131:37
10:11
-
10K
6.21 mi12:24:131:02:4810:0631:11
10:02
-0:09
15K
9.32 mi12:54:391:33:1410:0030:26
9:48
-0:14
20K
12.43 mi13:24:552:03:309:5630:16
9:45
-0:03
Half
13.11 mi13:31:302:10:059:556:35
9:39
-0:06
25K
15.53 mi13:56:242:34:599:5924:54
10:16
+0:37
30K
18.64 mi14:29:113:07:4610:0432:47
10:33
+0:17
20M
20.00 mi14:43:363:22:1110:0714:25
10:37
+0:04
21M
21.00 mi14:56:383:35:1310:1513:02
13:02
+2:25
35K
21.75 mi15:03:503:42:2510:147:12
9:37
-3:25
23M
23.00 mi15:19:283:58:0310:2115:38
12:29
+2:52
24M
24.00 mi15:29:514:08:2610:2110:23
10:23
-2:06
40K
24.85 mi15:38:294:17:0410:218:38
10:06
-0:17
25.2M
25.20 mi15:43:484:22:2310:255:19
15:25
+5:19
Finish
26.22 mi15:54:084:32:4310:2510:20
10:08
-5:17

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

9:37 /mi

Average Pace

10:25 /mi

Slowest Pace

15:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

3:58:44

88% of race

Time at Slower Pace

33:59

12% of race

Average Pace: 10:24 /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 mi11:53:0231:3710:1131:37
10:11
#23893
10K
6.21 mi12:24:131:02:4810:0631:11
10:02
#23866
15K
9.32 mi12:54:391:33:1410:0030:26
9:48
#23616
20K
12.43 mi13:24:552:03:309:5630:16
9:45
#23295
Half
13.11 mi13:31:302:10:059:556:35
9:39
#23251
25K
15.53 mi13:56:242:34:599:5924:54
10:16
#23142
30K
18.64 mi14:29:113:07:4610:0432:47
10:33
#22971
20M
20.00 mi14:43:363:22:1110:0714:25
10:37
#22882
21M
21.00 mi14:56:383:35:1310:1513:02
13:02
#22983
35K
21.75 mi15:03:503:42:2510:147:12
9:37
#22894
23M
23.00 mi15:19:283:58:0310:2115:38
12:29
#23024
24M
24.00 mi15:29:514:08:2610:2110:23
10:23
#22972
40K
24.85 mi15:38:294:17:0410:218:38
10:06
#22872
25.2M
25.20 mi15:43:484:22:2310:255:19
15:25
#22955
Finish
26.22 mi15:54:084:32:4310:2510:20
10:08
#22944
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi238939832983223039(Top 87%)9367(Top 82%)9367(Top 499%)
10K6.21 mi3.10 mi23866+279818+149818+1423773(Top 89%)9770(Top 86%)9770(Top 520%)
15K9.32 mi3.11 mi23616+2509683+1359683+13523039(Top 87%)9367(Top 82%)9367(Top 499%)
20K12.43 mi3.11 mi23295+3219509+1749509+17422270(Top 84%)8946(Top 78%)8946(Top 476%)
Half13.11 mi0.68 mi23251+449487+229487+2222541(Top 85%)9104(Top 80%)9104(Top 485%)
25K15.53 mi2.42 mi23142+1099433+549433+5422781(Top 86%)9264(Top 81%)9264(Top 493%)
30K18.64 mi3.11 mi22971+1719367+669367+6622324(Top 84%)9087(Top 80%)9087(Top 484%)
20M20.00 mi1.36 mi22882+899337+309337+3021973(Top 83%)8964(Top 78%)8964(Top 477%)
21M21.00 mi1.00 mi22983-1019397-609397-6024118(Top 91%)10153(Top 89%)10153(Top 541%)
35K21.75 mi0.75 mi22894+899358+399358+3920262(Top 76%)8100(Top 71%)8100(Top 431%)
23M23.00 mi1.25 mi23024-1309438-809438-8024577(Top 92%)10428(Top 91%)10428(Top 555%)
24M24.00 mi1.00 mi22972+529420+189420+1821771(Top 82%)8992(Top 79%)8992(Top 479%)
40K24.85 mi0.85 mi22872+1009376+449376+4420259(Top 76%)8203(Top 72%)8203(Top 437%)
25.2M25.20 mi0.35 mi22955-839417-419417-4125902(Top 97%)11121(Top 97%)11121(Top 592%)
Finish26.22 mi1.02 mi22944+119422-59422-522151(Top 83%)9201(Top 81%)9201(Top 490%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 87%
×21story building
+97ft-345ft

Overall

23039

Females

9367

F40-44

9367

5K→10K

3.1 - 6.2 mi

Top 89%
×5story building
+79ft-138ft

Overall

23773

Females

9770

F40-44

9770

10K→15K

6.2 - 9.3 mi

Top 87%
×3story building
+67ft-78ft

Overall

23039

Females

9367

F40-44

9367

15K→20K

9.3 - 12.4 mi

Top 84%
×5story building
+106ft-86ft

Overall

22270

Females

8946

F40-44

8946

20K→Half

12.4 - 13.1 mi

Top 85%
×2story building
+19ft-37ft

Overall

22541

Females

9104

F40-44

9104

Half→25K

13.1 - 15.5 mi

Top 86%
×4story building
+66ft-88ft

Overall

22781

Females

9264

F40-44

9264

25K→30K

15.5 - 18.6 mi

Top 84%
×9story building
+181ft-148ft

Overall

22324

Females

9087

F40-44

9087

30K→20M

18.6 - 20.0 mi

Top 83%
×5story building
+64ft-50ft

Overall

21973

Females

8964

F40-44

8964

20M→21M

20.0 - 21.0 mi

Top 91%
×8story building
+106ft-24ft

Overall

24118

Females

10153

F40-44

10153

21M→35K

21.0 - 21.8 mi

Top 76%
×7story building
+17ft-86ft

Overall

20262

Females

8100

F40-44

8100

35K→23M

21.8 - 23.0 mi

Top 92%
×5story building
+23ft-63ft

Overall

24577

Females

10428

F40-44

10428

23M→24M

23.0 - 24.0 mi

Top 82%
×6story building
+12ft-82ft

Overall

21771

Females

8992

F40-44

8992

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

20259

Females

8203

F40-44

8203

40K→25.2M

24.9 - 25.2 mi

Top 97%
×1story
+13ft-16ft

Overall

25902

Females

11121

F40-44

11121

25.2M→Finish

25.2 - 26.2 mi

Top 83%
×2story building
+22ft-21ft

Overall

22151

Females

9201

F40-44

9201

Passing Analysis

Category:
Athletes Passed
1712
Passed By
763
Net Change
+949
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23893
5K → 10K212185+27#23893#23866
10K → 15K27828+250#23866#23616
15K → 20K33918+321#23616#23295
20K → Half517+44#23295#23251
Half → 25K15748+109#23251#23142
25K → 30K21746+171#23142#22971
30K → 20M11728+89#22971#22882
20M → 21M20121-101#22882#22983
21M → 35K901+89#22983#22894
35K → 23M19149-130#22894#23024
23M → 24M7018+52#23024#22972
24M → 40K1033+100#22972#22872
40K → 25.2M285-83#22872#22955
25.2M → Finish3726+11#22955#22944
TOTALS1712763+949
📊

Passing Visuals

Category:
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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing