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BOSTON MARATHON 2023

Marjolein Delahaye

Bib: 20149•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 43%
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
26:05
Rank: #16861
Start → 5K
26:05 | 8:24/mi
10K· 6.21 mi
51:23
Rank: #16296 (+565)
5K → 10K
25:18 | 8:09/mi
15K· 9.32 mi
1:18:04
Rank: #17046 (-750)
10K → 15K
26:41 | 8:35/mi
20K· 12.43 mi
1:44:27
Rank: #16983 (+63)
15K → 20K
26:23 | 8:30/mi
Half· 13.11 mi
1:50:13
Rank: #17002 (-19)
20K → Half
5:46 | 8:27/mi
25K· 15.53 mi
2:11:12
Rank: #17017 (-15)
Half → 25K
20:59 | 8:39/mi
30K· 18.64 mi
2:39:26
Rank: #17075 (-58)
25K → 30K
28:14 | 9:05/mi
20M
2:51:39
Rank: #17017 (+58)
30K → 20M
12:13 | 8:59/mi
21M
3:01:16
Rank: #16980 (+37)
20M → 21M
9:37 | 9:37/mi
35K· 21.75 mi
3:07:41
Rank: #16941 (+39)
21M → 35K
6:25 | 8:35/mi
23M
3:19:03
Rank: #16909 (+32)
35K → 23M
11:22 | 9:05/mi
24M
3:27:48
Rank: #16875 (+34)
23M → 24M
8:45 | 8:45/mi
40K· 24.85 mi
3:35:25
Rank: #16802 (+73)
24M → 40K
7:37 | 8:54/mi
25.2M
3:38:49
Rank: #16800 (+2)
40K → 25.2M
3:24 | 9:52/mi
Finish· 26.22 mi
3:47:58
Rank: #16844 (-44)
25.2M → Finish
9:09 | 8:59/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:13
Pace8:24 /mi
2nd Half
Distance13.11 mi
Time1:57:45
Pace8:59 /mi
📊Positive Split: 6.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:5126:058:2426:05
8:24
-
10K
6.21 mi12:10:0951:238:1625:18
8:09
-0:15
15K
9.32 mi12:36:501:18:048:2326:41
8:35
+0:26
20K
12.43 mi13:03:131:44:278:2426:23
8:30
-0:05
Half
13.11 mi13:08:591:50:138:245:46
8:27
-0:03
25K
15.53 mi13:29:582:11:128:2720:59
8:39
+0:12
30K
18.64 mi13:58:122:39:268:3328:14
9:05
+0:26
20M
20.00 mi14:10:252:51:398:3512:13
8:59
-0:06
21M
21.00 mi14:20:023:01:168:389:37
9:37
+0:38
35K
21.75 mi14:26:273:07:418:386:25
8:35
-1:02
23M
23.00 mi14:37:493:19:038:3911:22
9:05
+0:30
24M
24.00 mi14:46:343:27:488:408:45
8:45
-0:20
40K
24.85 mi14:54:113:35:258:407:37
8:54
+0:09
25.2M
25.20 mi14:57:353:38:498:413:24
9:52
+0:58
Finish
26.22 mi15:06:443:47:588:429:09
8:59
-0:53

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

8:09 /mi

Average Pace

8:42 /mi

Slowest Pace

9:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:23:32

37% of race

Time at Steady Pace

1:10:27

31% of race

Time at Slower Pace

1:13:59

32% of race

Average Pace: 8:42 /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 mi11:44:5126:058:2426:05
8:24
#16861
10K
6.21 mi12:10:0951:238:1625:18
8:09
#16296
15K
9.32 mi12:36:501:18:048:2326:41
8:35
#17046
20K
12.43 mi13:03:131:44:278:2426:23
8:30
#16983
Half
13.11 mi13:08:591:50:138:245:46
8:27
#17002
25K
15.53 mi13:29:582:11:128:2720:59
8:39
#17017
30K
18.64 mi13:58:122:39:268:3328:14
9:05
#17075
20M
20.00 mi14:10:252:51:398:3512:13
8:59
#17017
21M
21.00 mi14:20:023:01:168:389:37
9:37
#16980
35K
21.75 mi14:26:273:07:418:386:25
8:35
#16941
23M
23.00 mi14:37:493:19:038:3911:22
9:05
#16909
24M
24.00 mi14:46:343:27:488:408:45
8:45
#16875
40K
24.85 mi14:54:113:35:258:407:37
8:54
#16802
25.2M
25.20 mi14:57:353:38:498:413:24
9:52
#16800
Finish
26.22 mi15:06:443:47:588:429:09
8:59
#16844
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi168615834583418368(Top 69%)6712(Top 59%)6712(Top 369%)
10K6.21 mi3.10 mi16296+5655457+3775457+37715865(Top 60%)5188(Top 45%)5188(Top 286%)
15K9.32 mi3.11 mi17046-7505934-4775934-47718368(Top 69%)6712(Top 59%)6712(Top 369%)
20K12.43 mi3.11 mi16983+635917+175917+1716809(Top 63%)5827(Top 51%)5827(Top 321%)
Half13.11 mi0.68 mi17002-195934-175934-1717493(Top 66%)6176(Top 54%)6176(Top 340%)
25K15.53 mi2.42 mi17017-155957-235957-2317140(Top 64%)6083(Top 53%)6083(Top 335%)
30K18.64 mi3.11 mi17075-586010-536010-5317635(Top 66%)6433(Top 56%)6433(Top 354%)
20M20.00 mi1.36 mi17017+585980+305980+3016503(Top 62%)5868(Top 51%)5868(Top 323%)
21M21.00 mi1.00 mi16980+375978+25978+216525(Top 62%)5929(Top 52%)5929(Top 326%)
35K21.75 mi0.75 mi16941+395953+255953+2515773(Top 59%)5568(Top 49%)5568(Top 306%)
23M23.00 mi1.25 mi16909+325970-175970-1716455(Top 62%)5999(Top 53%)5999(Top 330%)
24M24.00 mi1.00 mi16875+345968+25968+215960(Top 60%)5788(Top 51%)5788(Top 319%)
40K24.85 mi0.85 mi16802+735944+245944+2415685(Top 59%)5677(Top 50%)5677(Top 312%)
25.2M25.20 mi0.35 mi16800+25950-65950-616846(Top 63%)6337(Top 55%)6337(Top 349%)
Finish26.22 mi1.02 mi16844-445983-335983-3317889(Top 67%)6851(Top 60%)6851(Top 377%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21stories
+97ft-345ft

Overall

18368

Females

6712

F45-49

6712

5K→10K

3.1 - 6.2 mi

Top 60%
×5stories
+79ft-138ft

Overall

15865

Females

5188

F45-49

5188

10K→15K

6.2 - 9.3 mi

Top 69%
×3stories
+67ft-78ft

Overall

18368

Females

6712

F45-49

6712

15K→20K

9.3 - 12.4 mi

Top 63%
×5stories
+106ft-86ft

Overall

16809

Females

5827

F45-49

5827

20K→Half

12.4 - 13.1 mi

Top 66%
×2stories
+19ft-37ft

Overall

17493

Females

6176

F45-49

6176

Half→25K

13.1 - 15.5 mi

Top 64%
×4stories
+66ft-88ft

Overall

17140

Females

6083

F45-49

6083

25K→30K

15.5 - 18.6 mi

Top 66%
×9stories
+181ft-148ft

Overall

17635

Females

6433

F45-49

6433

30K→20M

18.6 - 20.0 mi

Top 62%
×5stories
+64ft-50ft

Overall

16503

Females

5868

F45-49

5868

20M→21M

20.0 - 21.0 mi

Top 62%
×8stories
+106ft-24ft

Overall

16525

Females

5929

F45-49

5929

21M→35K

21.0 - 21.8 mi

Top 59%
×7stories
+17ft-86ft

Overall

15773

Females

5568

F45-49

5568

35K→23M

21.8 - 23.0 mi

Top 62%
×5stories
+23ft-63ft

Overall

16455

Females

5999

F45-49

5999

23M→24M

23.0 - 24.0 mi

Top 60%
×6stories
+12ft-82ft

Overall

15960

Females

5788

F45-49

5788

24M→40K

24.0 - 24.9 mi

Top 59%
×1story
+6ft-20ft

Overall

15685

Females

5677

F45-49

5677

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

16846

Females

6337

F45-49

6337

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2stories
+22ft-21ft

Overall

17889

Females

6851

F45-49

6851

Passing Analysis

Category:
Athletes Passed
1825
Passed By
1808
Net Change
+17
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16861
5K → 10K675110+565#16861#16296
10K → 15K34784-750#16296#17046
15K → 20K211148+63#17046#16983
20K → Half1736-19#16983#17002
Half → 25K114129-15#17002#17017
25K → 30K157215-58#17017#17075
30K → 20M10547+58#17075#17017
20M → 21M10164+37#17017#16980
21M → 35K5718+39#16980#16941
35K → 23M10775+32#16941#16909
23M → 24M7339+34#16909#16875
24M → 40K9421+73#16875#16802
40K → 25.2M2624+2#16802#16800
25.2M → Finish5498-44#16800#16844
TOTALS18251808+17
📊

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