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BOSTON MARATHON 2023

Dagmara Grochowska

Bib: 18761•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 31%
Gender (Female)
#0 / 11423
Top 12%
Masters (Masters Women)
#0 / 6539
Top 4%
Division (F40-44)
#0 / 1878
Top 9%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:30
Rank: #10212
Start → 5K
7:34/mi
23:30 split
10K· 6.21 mi
46:14
Rank: #9506 (+706)
5K → 10K
7:19/mi
22:44 split
15K· 9.32 mi
1:09:08
Rank: #9334 (+172)
10K → 15K
7:22/mi
22:54 split
20K· 12.43 mi
1:32:19
Rank: #9222 (+112)
15K → 20K
7:28/mi
23:11 split
Half· 13.11 mi
1:37:21
Rank: #9218 (+4)
20K → Half
7:23/mi
5:02 split
25K· 15.53 mi
1:55:42
Rank: #9212 (+6)
Half → 25K
7:34/mi
18:21 split
30K· 18.64 mi
2:19:32
Rank: #9055 (+157)
25K → 30K
7:40/mi
23:50 split
20M
2:29:57
Rank: #8931 (+124)
30K → 20M
7:40/mi
10:25 split
21M
2:37:59
Rank: #8835 (+96)
20M → 21M
8:02/mi
8:02 split
35K· 21.75 mi
2:43:32
Rank: #8788 (+47)
21M → 35K
7:25/mi
5:33 split
23M
2:53:09
Rank: #8701 (+87)
35K → 23M
7:41/mi
9:37 split
24M
3:00:33
Rank: #8586 (+115)
23M → 24M
7:24/mi
7:24 split
40K· 24.85 mi
3:06:49
Rank: #8436 (+150)
24M → 40K
7:20/mi
6:16 split
25.2M
3:09:35
Rank: #8387 (+49)
40K → 25.2M
8:01/mi
2:46 split
Finish· 26.22 mi
3:17:01
Rank: #8303 (+84)
25.2M → Finish
7:18/mi
7:26 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:21
Pace7:26 /mi
2nd Half
Distance13.11 mi
Time1:39:40
Pace7:36 /mi
📊Positive Split: 2.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:3223:307:3423:30
7:34
-
10K
6.21 mi11:37:1646:147:2622:44
7:19
-0:15
15K
9.32 mi12:00:101:09:087:2522:54
7:22
+0:03
20K
12.43 mi12:23:211:32:197:2623:11
7:28
+0:06
Half
13.11 mi12:28:231:37:217:265:02
7:23
-0:05
25K
15.53 mi12:46:441:55:427:2718:21
7:34
+0:11
30K
18.64 mi13:10:342:19:327:2923:50
7:40
+0:06
20M
20.00 mi13:20:592:29:577:3010:25
7:40
0:00
21M
21.00 mi13:29:012:37:597:318:02
8:02
+0:22
35K
21.75 mi13:34:342:43:327:315:33
7:25
-0:37
23M
23.00 mi13:44:112:53:097:329:37
7:41
+0:16
24M
24.00 mi13:51:353:00:337:317:24
7:24
-0:17
40K
24.85 mi13:57:513:06:497:316:16
7:20
-0:04
25.2M
25.20 mi14:00:373:09:357:312:46
8:01
+0:41
Finish
26.22 mi14:08:033:17:017:317:26
7:18
-0:43

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

7:18 /mi

Average Pace

7:31 /mi

Slowest Pace

8:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:08:59

96% of race

Time at Steady Pace

8:02

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:31 /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 mi11:14:3223:307:3423:30
7:34
#10212
10K
6.21 mi11:37:1646:147:2622:44
7:19
#9506
15K
9.32 mi12:00:101:09:087:2522:54
7:22
#9334
20K
12.43 mi12:23:211:32:197:2623:11
7:28
#9222
Half
13.11 mi12:28:231:37:217:265:02
7:23
#9218
25K
15.53 mi12:46:441:55:427:2718:21
7:34
#9212
30K
18.64 mi13:10:342:19:327:2923:50
7:40
#9055
20M
20.00 mi13:20:592:29:577:3010:25
7:40
#8931
21M
21.00 mi13:29:012:37:597:318:02
8:02
#8835
35K
21.75 mi13:34:342:43:327:315:33
7:25
#8788
23M
23.00 mi13:44:112:53:097:329:37
7:41
#8701
24M
24.00 mi13:51:353:00:337:317:24
7:24
#8586
40K
24.85 mi13:57:513:06:497:316:16
7:20
#8436
25.2M
25.20 mi14:00:373:09:357:312:46
8:01
#8387
Finish
26.22 mi14:08:033:17:017:317:26
7:18
#8303
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi10212195519559114(Top 34%)1490(Top 13%)1490(Top 79%)
10K6.21 mi3.10 mi9506+7061613+3421613+3428994(Top 34%)1404(Top 12%)1404(Top 75%)
15K9.32 mi3.11 mi9334+1721555+581555+589114(Top 34%)1490(Top 13%)1490(Top 79%)
20K12.43 mi3.11 mi9222+1121524+311524+319017(Top 34%)1491(Top 13%)1491(Top 79%)
Half13.11 mi0.68 mi9218+41526-21526-29284(Top 35%)1576(Top 14%)1576(Top 84%)
25K15.53 mi2.42 mi9212+61528-21528-29303(Top 35%)1675(Top 15%)1675(Top 89%)
30K18.64 mi3.11 mi9055+1571508+201508+208449(Top 32%)1485(Top 13%)1485(Top 79%)
20M20.00 mi1.36 mi8931+1241477+311477+317962(Top 30%)1385(Top 12%)1385(Top 74%)
21M21.00 mi1.00 mi8835+961453+241453+247582(Top 28%)1348(Top 12%)1348(Top 72%)
35K21.75 mi0.75 mi8788+471450+31450+37971(Top 30%)1478(Top 13%)1478(Top 79%)
23M23.00 mi1.25 mi8701+87145014507636(Top 29%)1424(Top 12%)1424(Top 76%)
24M24.00 mi1.00 mi8586+1151420+301420+307089(Top 27%)1318(Top 12%)1318(Top 70%)
40K24.85 mi0.85 mi8436+1501388+321388+325679(Top 21%)869(Top 8%)869(Top 46%)
25.2M25.20 mi0.35 mi8387+491381+71381+76725(Top 25%)1311(Top 11%)1311(Top 70%)
Finish26.22 mi1.02 mi8303+841372+91372+97124(Top 27%)1471(Top 13%)1471(Top 78%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21stories
+97ft-345ft

Overall

9114

Females

1490

F40-44

1490

5K→10K

3.1 - 6.2 mi

Top 34%
×5stories
+79ft-138ft

Overall

8994

Females

1404

F40-44

1404

10K→15K

6.2 - 9.3 mi

Top 34%
×3stories
+67ft-78ft

Overall

9114

Females

1490

F40-44

1490

15K→20K

9.3 - 12.4 mi

Top 34%
×5stories
+106ft-86ft

Overall

9017

Females

1491

F40-44

1491

20K→Half

12.4 - 13.1 mi

Top 35%
×2stories
+19ft-37ft

Overall

9284

Females

1576

F40-44

1576

Half→25K

13.1 - 15.5 mi

Top 35%
×4stories
+66ft-88ft

Overall

9303

Females

1675

F40-44

1675

25K→30K

15.5 - 18.6 mi

Top 32%
×9stories
+181ft-148ft

Overall

8449

Females

1485

F40-44

1485

30K→20M

18.6 - 20.0 mi

Top 30%
×5stories
+64ft-50ft

Overall

7962

Females

1385

F40-44

1385

20M→21M

20.0 - 21.0 mi

Top 28%
×8stories
+106ft-24ft

Overall

7582

Females

1348

F40-44

1348

21M→35K

21.0 - 21.8 mi

Top 30%
×7stories
+17ft-86ft

Overall

7971

Females

1478

F40-44

1478

35K→23M

21.8 - 23.0 mi

Top 29%
×5stories
+23ft-63ft

Overall

7636

Females

1424

F40-44

1424

23M→24M

23.0 - 24.0 mi

Top 27%
×6stories
+12ft-82ft

Overall

7089

Females

1318

F40-44

1318

24M→40K

24.0 - 24.9 mi

Top 21%
×1story
+6ft-20ft

Overall

5679

Females

869

F40-44

869

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

6725

Females

1311

F40-44

1311

25.2M→Finish

25.2 - 26.2 mi

Top 27%
×2stories
+22ft-21ft

Overall

7124

Females

1471

F40-44

1471

Passing Analysis

Category:
Athletes Passed
2530*
Passed By
621
Net Change
+1909
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10212
5K → 10K781*75+706#10212#9506
10K → 15K24977+172#9506#9334
15K → 20K19583+112#9334#9222
20K → Half2723+4#9222#9218
Half → 25K114108+6#9218#9212
25K → 30K24184+157#9212#9055
30K → 20M15228+124#9055#8931
20M → 21M12933+96#8931#8835
21M → 35K6821+47#8835#8788
35K → 23M11831+87#8788#8701
23M → 24M13015+115#8701#8586
24M → 40K1566+150#8586#8436
40K → 25.2M545+49#8436#8387
25.2M → Finish11632+84#8387#8303
TOTALS2530*621+1909

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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