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BOSTON MARATHON 2023

Malgorzata Czaja

Bib: 22175•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F45-49)
#0 / 1817
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:51
Rank: #11269
Start → 5K
23:51 | 7:41/mi
10K· 6.21 mi
47:40
Rank: #11550 (-281)
5K → 10K
23:49 | 7:40/mi
15K· 9.32 mi
1:12:36
Rank: #12585 (-1035)
10K → 15K
24:56 | 8:02/mi
20K· 12.43 mi
1:38:52
Rank: #13747 (-1162)
15K → 20K
26:16 | 8:27/mi
Half· 13.11 mi
1:44:42
Rank: #14006 (-259)
20K → Half
5:50 | 8:33/mi
25K· 15.53 mi
2:06:42
Rank: #15042 (-1036)
Half → 25K
22:00 | 9:04/mi
30K· 18.64 mi
2:37:00
Rank: #16309 (-1267)
25K → 30K
30:18 | 9:45/mi
20M
2:50:33
Rank: #16711 (-402)
30K → 20M
13:33 | 9:58/mi
21M
3:02:02
Rank: #17199 (-488)
20M → 21M
11:29 | 11:29/mi
35K· 21.75 mi
3:09:24
Rank: #17397 (-198)
21M → 35K
7:22 | 9:51/mi
23M
3:22:31
Rank: #17813 (-416)
35K → 23M
13:07 | 10:29/mi
24M
3:32:42
Rank: #18050 (-237)
23M → 24M
10:11 | 10:11/mi
40K· 24.85 mi
3:41:33
Rank: #18223 (-173)
24M → 40K
8:51 | 10:21/mi
25.2M
3:45:31
Rank: #18311 (-88)
40K → 25.2M
3:58 | 11:30/mi
Finish· 26.22 mi
3:56:03
Rank: #18570 (-259)
25.2M → Finish
10:32 | 10:20/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:42
Pace7:59 /mi
2nd Half
Distance13.11 mi
Time2:11:21
Pace10:01 /mi
📊Positive Split: 25.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:1523:517:4123:51
7:41
-
10K
6.21 mi11:41:0447:407:4023:49
7:40
-0:01
15K
9.32 mi12:06:001:12:367:4724:56
8:02
+0:22
20K
12.43 mi12:32:161:38:527:5726:16
8:27
+0:25
Half
13.11 mi12:38:061:44:427:595:50
8:33
+0:06
25K
15.53 mi13:00:062:06:428:0922:00
9:04
+0:31
30K
18.64 mi13:30:242:37:008:2530:18
9:45
+0:41
20M
20.00 mi13:43:572:50:338:3213:33
9:58
+0:13
21M
21.00 mi13:55:263:02:028:4011:29
11:29
+1:31
35K
21.75 mi14:02:483:09:248:437:22
9:51
-1:38
23M
23.00 mi14:15:553:22:318:4813:07
10:29
+0:38
24M
24.00 mi14:26:063:32:428:5210:11
10:11
-0:18
40K
24.85 mi14:34:573:41:338:558:51
10:21
+0:10
25.2M
25.20 mi14:38:553:45:318:573:58
11:30
+1:09
Finish
26.22 mi14:49:273:56:039:0110:32
10:20
-1:10

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

7:40 /mi

Average Pace

9:01 /mi

Slowest Pace

11:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:06:42

54% of race

Time at Steady Pace

1:20:47

34% of race

Time at Slower Pace

28:34

12% of race

Average Pace: 9:00 /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 mi11:17:1523:517:4123:51
7:41
#11269
10K
6.21 mi11:41:0447:407:4023:49
7:40
#11550
15K
9.32 mi12:06:001:12:367:4724:56
8:02
#12585
20K
12.43 mi12:32:161:38:527:5726:16
8:27
#13747
Half
13.11 mi12:38:061:44:427:595:50
8:33
#14006
25K
15.53 mi13:00:062:06:428:0922:00
9:04
#15042
30K
18.64 mi13:30:242:37:008:2530:18
9:45
#16309
20M
20.00 mi13:43:572:50:338:3213:33
9:58
#16711
21M
21.00 mi13:55:263:02:028:4011:29
11:29
#17199
35K
21.75 mi14:02:483:09:248:437:22
9:51
#17397
23M
23.00 mi14:15:553:22:318:4813:07
10:29
#17813
24M
24.00 mi14:26:063:32:428:5210:11
10:11
#18050
40K
24.85 mi14:34:573:41:338:558:51
10:21
#18223
25.2M
25.20 mi14:38:553:45:318:573:58
11:30
#18311
Finish
26.22 mi14:49:273:56:039:0110:32
10:20
#18570
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi112692477247714620(Top 55%)4463(Top 39%)4463(Top 246%)
10K6.21 mi3.10 mi11550-2812633-1562633-15611973(Top 45%)2860(Top 25%)2860(Top 157%)
15K9.32 mi3.11 mi12585-10353224-5913224-59114620(Top 55%)4463(Top 39%)4463(Top 246%)
20K12.43 mi3.11 mi13747-11623937-7133937-71316586(Top 62%)5701(Top 50%)5701(Top 314%)
Half13.11 mi0.68 mi14006-2594090-1534090-15318076(Top 68%)6540(Top 57%)6540(Top 360%)
25K15.53 mi2.42 mi15042-10364738-6484738-64819306(Top 73%)7308(Top 64%)7308(Top 402%)
30K18.64 mi3.11 mi16309-12675576-8385576-83820305(Top 76%)7942(Top 70%)7942(Top 437%)
20M20.00 mi1.36 mi16711-4025815-2395815-23920408(Top 77%)8079(Top 71%)8079(Top 445%)
21M21.00 mi1.00 mi17199-4886113-2986113-29821853(Top 82%)8914(Top 78%)8914(Top 491%)
35K21.75 mi0.75 mi17397-1986242-1296242-12920880(Top 78%)8422(Top 74%)8422(Top 464%)
23M23.00 mi1.25 mi17813-4166509-2676509-26721259(Top 80%)8653(Top 76%)8653(Top 476%)
24M24.00 mi1.00 mi18050-2376660-1516660-15121290(Top 80%)8715(Top 76%)8715(Top 480%)
40K24.85 mi0.85 mi18223-1736768-1086768-10820877(Top 78%)8529(Top 75%)8529(Top 469%)
25.2M25.20 mi0.35 mi18311-886824-566824-5621578(Top 81%)8893(Top 78%)8893(Top 489%)
Finish26.22 mi1.02 mi18570-2596977-1536977-15322649(Top 85%)9471(Top 83%)9471(Top 521%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21stories
+97ft-345ft

Overall

14620

Females

4463

F45-49

4463

5K→10K

3.1 - 6.2 mi

Top 45%
×5stories
+79ft-138ft

Overall

11973

Females

2860

F45-49

2860

10K→15K

6.2 - 9.3 mi

Top 55%
×3stories
+67ft-78ft

Overall

14620

Females

4463

F45-49

4463

15K→20K

9.3 - 12.4 mi

Top 62%
×5stories
+106ft-86ft

Overall

16586

Females

5701

F45-49

5701

20K→Half

12.4 - 13.1 mi

Top 68%
×2stories
+19ft-37ft

Overall

18076

Females

6540

F45-49

6540

Half→25K

13.1 - 15.5 mi

Top 73%
×4stories
+66ft-88ft

Overall

19306

Females

7308

F45-49

7308

25K→30K

15.5 - 18.6 mi

Top 76%
×9stories
+181ft-148ft

Overall

20305

Females

7942

F45-49

7942

30K→20M

18.6 - 20.0 mi

Top 77%
×5stories
+64ft-50ft

Overall

20408

Females

8079

F45-49

8079

20M→21M

20.0 - 21.0 mi

Top 82%
×8stories
+106ft-24ft

Overall

21853

Females

8914

F45-49

8914

21M→35K

21.0 - 21.8 mi

Top 78%
×7stories
+17ft-86ft

Overall

20880

Females

8422

F45-49

8422

35K→23M

21.8 - 23.0 mi

Top 80%
×5stories
+23ft-63ft

Overall

21259

Females

8653

F45-49

8653

23M→24M

23.0 - 24.0 mi

Top 80%
×6stories
+12ft-82ft

Overall

21290

Females

8715

F45-49

8715

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

20877

Females

8529

F45-49

8529

40K→25.2M

24.9 - 25.2 mi

Top 81%
×1story
+13ft-16ft

Overall

21578

Females

8893

F45-49

8893

25.2M→Finish

25.2 - 26.2 mi

Top 85%
×2stories
+22ft-21ft

Overall

22649

Females

9471

F45-49

9471

Passing Analysis

Category:
Athletes Passed
383
Passed By
7684
Net Change
-7301
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11269
5K → 10K194475-281#11269#11550
10K → 15K171052-1035#11550#12585
15K → 20K271189-1162#12585#13747
20K → Half2261-259#13747#14006
Half → 25K201056-1036#14006#15042
25K → 30K121279-1267#15042#16309
30K → 20M17419-402#16309#16711
20M → 21M10498-488#16711#17199
21M → 35K16214-198#17199#17397
35K → 23M22438-416#17397#17813
23M → 24M14251-237#17813#18050
24M → 40K18191-173#18050#18223
40K → 25.2M694-88#18223#18311
25.2M → Finish8267-259#18311#18570
TOTALS3837684-7301
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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