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BOSTON MARATHON 2023

Margaret Czarniak

Bib: 25664•F

MA

0:00
0:00
/ mi
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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
37:02
Rank: #26406
Start → 5K
37:02 | 11:55/mi
10K· 6.21 mi
1:14:28
Rank: #26373 (+33)
5K → 10K
37:26 | 12:03/mi
15K· 9.32 mi
1:53:10
Rank: #26365 (+8)
10K → 15K
38:42 | 12:27/mi
20K· 12.43 mi
2:33:25
Rank: #26344 (+21)
15K → 20K
40:15 | 12:57/mi
Half· 13.11 mi
2:41:48
Rank: #26331 (+13)
20K → Half
8:23 | 12:17/mi
25K· 15.53 mi
3:14:43
Rank: #26297 (+34)
Half → 25K
32:55 | 13:35/mi
30K· 18.64 mi
3:58:37
Rank: #26304 (-7)
25K → 30K
43:54 | 14:08/mi
20M
4:17:24
Rank: #26278 (+26)
30K → 20M
18:47 | 13:49/mi
21M
4:32:44
Rank: #26269 (+9)
20M → 21M
15:20 | 15:20/mi
35K· 21.75 mi
4:42:48
Rank: #26255 (+14)
21M → 35K
10:04 | 13:27/mi
23M
5:00:42
Rank: #26253 (+2)
35K → 23M
17:54 | 14:18/mi
24M
5:14:26
Rank: #26248 (+5)
23M → 24M
13:44 | 13:44/mi
40K· 24.85 mi
5:26:23
Rank: #26240 (+8)
24M → 40K
11:57 | 13:59/mi
25.2M
5:31:48
Rank: #26244 (-4)
40K → 25.2M
5:25 | 15:42/mi
Finish· 26.22 mi
5:44:29
Rank: #26235 (+9)
25.2M → Finish
12:41 | 12:27/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:41:48
Pace12:21 /mi
2nd Half
Distance13.11 mi
Time3:02:41
Pace13:56 /mi
📊Positive Split: 12.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:54:0237:0211:5537:02
11:55
-
10K
6.21 mi12:31:281:14:2811:5937:26
12:03
+0:08
15K
9.32 mi13:10:101:53:1012:0838:42
12:27
+0:24
20K
12.43 mi13:50:252:33:2512:2140:15
12:57
+0:30
Half
13.11 mi13:58:482:41:4812:218:23
12:17
-0:40
25K
15.53 mi14:31:433:14:4312:3232:55
13:35
+1:18
30K
18.64 mi15:15:373:58:3712:4843:54
14:08
+0:33
20M
20.00 mi15:34:244:17:2412:5218:47
13:49
-0:19
21M
21.00 mi15:49:444:32:4412:5915:20
15:20
+1:31
35K
21.75 mi15:59:484:42:4813:0010:04
13:27
-1:53
23M
23.00 mi16:17:425:00:4213:0417:54
14:18
+0:51
24M
24.00 mi16:31:265:14:2613:0613:44
13:44
-0:34
40K
24.85 mi16:43:235:26:2313:0811:57
13:59
+0:15
25.2M
25.20 mi16:48:485:31:4813:105:25
15:42
+1:43
Finish
26.22 mi17:01:295:44:2913:0912:41
12:27
-3:15

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

11:55 /mi

Average Pace

13:09 /mi

Slowest Pace

15:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:54:29

51% of race

Time at Steady Pace

2:11:21

38% of race

Time at Slower Pace

38:39

11% of race

Average Pace: 13:08 /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 mi11:54:0237:0211:5537:02
11:55
#26406
10K
6.21 mi12:31:281:14:2811:5937:26
12:03
#26373
15K
9.32 mi13:10:101:53:1012:0838:42
12:27
#26365
20K
12.43 mi13:50:252:33:2512:2140:15
12:57
#26344
Half
13.11 mi13:58:482:41:4812:218:23
12:17
#26331
25K
15.53 mi14:31:433:14:4312:3232:55
13:35
#26297
30K
18.64 mi15:15:373:58:3712:4843:54
14:08
#26304
20M
20.00 mi15:34:244:17:2412:5218:47
13:49
#26278
21M
21.00 mi15:49:444:32:4412:5915:20
15:20
#26269
35K
21.75 mi15:59:484:42:4813:0010:04
13:27
#26255
23M
23.00 mi16:17:425:00:4213:0417:54
14:18
#26253
24M
24.00 mi16:31:265:14:2613:0613:44
13:44
#26248
40K
24.85 mi16:43:235:26:2313:0811:57
13:59
#26240
25.2M
25.20 mi16:48:485:31:4813:105:25
15:42
#26244
Finish
26.22 mi17:01:295:44:2913:0912:41
12:27
#26235
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi26406112961129626300(Top 99%)11234(Top 98%)11234(Top 230%)
10K6.21 mi3.10 mi26373+3311275+2111275+2126302(Top 99%)11233(Top 98%)11233(Top 230%)
15K9.32 mi3.11 mi26365+811273+211273+226300(Top 99%)11234(Top 98%)11234(Top 230%)
20K12.43 mi3.11 mi26344+2111252+2111252+2126212(Top 98%)11180(Top 98%)11180(Top 229%)
Half13.11 mi0.68 mi26331+1311244+811244+826056(Top 98%)11094(Top 97%)11094(Top 227%)
25K15.53 mi2.42 mi26297+3411223+2111223+2126164(Top 98%)11170(Top 98%)11170(Top 229%)
30K18.64 mi3.11 mi26304-711227-411227-426090(Top 98%)11144(Top 98%)11144(Top 228%)
20M20.00 mi1.36 mi26278+2611221+611221+625739(Top 97%)10982(Top 96%)10982(Top 225%)
21M21.00 mi1.00 mi26269+911217+411217+425919(Top 97%)11062(Top 97%)11062(Top 226%)
35K21.75 mi0.75 mi26255+1411213+411213+425865(Top 97%)11072(Top 97%)11072(Top 227%)
23M23.00 mi1.25 mi26253+211215-211215-226001(Top 98%)11139(Top 98%)11139(Top 228%)
24M24.00 mi1.00 mi26248+5112151121525941(Top 97%)11137(Top 97%)11137(Top 228%)
40K24.85 mi0.85 mi26240+811208+711208+725680(Top 96%)11016(Top 96%)11016(Top 226%)
25.2M25.20 mi0.35 mi26244-411210-211210-226028(Top 98%)11177(Top 98%)11177(Top 229%)
Finish26.22 mi1.02 mi26235+911209+111209+125647(Top 96%)11003(Top 96%)11003(Top 225%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 99%
×21stories
+97ft-345ft

Overall

26300

Females

11234

F18-39

11234

5K→10K

3.1 - 6.2 mi

Top 99%
×5stories
+79ft-138ft

Overall

26302

Females

11233

F18-39

11233

10K→15K

6.2 - 9.3 mi

Top 99%
×3stories
+67ft-78ft

Overall

26300

Females

11234

F18-39

11234

15K→20K

9.3 - 12.4 mi

Top 98%
×5stories
+106ft-86ft

Overall

26212

Females

11180

F18-39

11180

20K→Half

12.4 - 13.1 mi

Top 98%
×2stories
+19ft-37ft

Overall

26056

Females

11094

F18-39

11094

Half→25K

13.1 - 15.5 mi

Top 98%
×4stories
+66ft-88ft

Overall

26164

Females

11170

F18-39

11170

25K→30K

15.5 - 18.6 mi

Top 98%
×9stories
+181ft-148ft

Overall

26090

Females

11144

F18-39

11144

30K→20M

18.6 - 20.0 mi

Top 97%
×5stories
+64ft-50ft

Overall

25739

Females

10982

F18-39

10982

20M→21M

20.0 - 21.0 mi

Top 97%
×8stories
+106ft-24ft

Overall

25919

Females

11062

F18-39

11062

21M→35K

21.0 - 21.8 mi

Top 97%
×7stories
+17ft-86ft

Overall

25865

Females

11072

F18-39

11072

35K→23M

21.8 - 23.0 mi

Top 98%
×5stories
+23ft-63ft

Overall

26001

Females

11139

F18-39

11139

23M→24M

23.0 - 24.0 mi

Top 97%
×6stories
+12ft-82ft

Overall

25941

Females

11137

F18-39

11137

24M→40K

24.0 - 24.9 mi

Top 96%
×1story
+6ft-20ft

Overall

25680

Females

11016

F18-39

11016

40K→25.2M

24.9 - 25.2 mi

Top 98%
×1story
+13ft-16ft

Overall

26028

Females

11177

F18-39

11177

25.2M→Finish

25.2 - 26.2 mi

Top 96%
×2stories
+22ft-21ft

Overall

25647

Females

11003

F18-39

11003

Passing Analysis

Category:
Athletes Passed
360
Passed By
189
Net Change
+171
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26406
5K → 10K6027+33#26406#26373
10K → 15K3729+8#26373#26365
15K → 20K4625+21#26365#26344
20K → Half141+13#26344#26331
Half → 25K4511+34#26331#26297
25K → 30K2431-7#26297#26304
30K → 20M315+26#26304#26278
20M → 21M2112+9#26278#26269
21M → 35K206+14#26269#26255
35K → 23M1816+2#26255#26253
23M → 24M138+5#26253#26248
24M → 40K135+8#26248#26240
40K → 25.2M48-4#26240#26244
25.2M → Finish145+9#26244#26235
TOTALS360189+171
📊

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