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BOSTON MARATHON 2023

Melanie Laswell

Bib: 19918•F

IN

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

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
26:17
Rank: #17297
Start → 5K
26:17 | 8:28/mi
10K· 6.21 mi
53:15
Rank: #18335 (-1038)
5K → 10K
26:58 | 8:41/mi
15K· 9.32 mi
1:20:46
Rank: #18847 (-512)
10K → 15K
27:31 | 8:51/mi
20K· 12.43 mi
1:48:52
Rank: #19117 (-270)
15K → 20K
28:06 | 9:03/mi
Half· 13.11 mi
1:55:03
Rank: #19210 (-93)
20K → Half
6:11 | 9:04/mi
25K· 15.53 mi
2:18:11
Rank: #19600 (-390)
Half → 25K
23:08 | 9:32/mi
30K· 18.64 mi
2:49:02
Rank: #19914 (-314)
25K → 30K
30:51 | 9:56/mi
20M
3:07:38
Rank: #20898 (-984)
30K → 20M
18:36 | 13:41/mi
21M
3:18:35
Rank: #20875 (+23)
20M → 21M
10:57 | 10:57/mi
35K· 21.75 mi
3:25:38
Rank: #20814 (+61)
21M → 35K
7:03 | 9:25/mi
23M
3:39:41
Rank: #20975 (-161)
35K → 23M
14:03 | 11:13/mi
24M
3:50:50
Rank: #21101 (-126)
23M → 24M
11:09 | 11:09/mi
40K· 24.85 mi
4:00:29
Rank: #21196 (-95)
24M → 40K
9:39 | 11:17/mi
25.2M
4:04:44
Rank: #21243 (-47)
40K → 25.2M
4:15 | 12:19/mi
Finish· 26.22 mi
4:14:51
Rank: #21250 (-7)
25.2M → Finish
10:07 | 9:56/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.11 mi
Time1:55:03
Pace8:47 /mi
2nd Half
Distance13.11 mi
Time2:19:48
Pace10:40 /mi
📊Positive Split: 21.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:5126:178:2826:17
8:28
-
10K
6.21 mi11:44:4953:158:3426:58
8:41
+0:13
15K
9.32 mi12:12:201:20:468:4027:31
8:51
+0:10
20K
12.43 mi12:40:261:48:528:4628:06
9:03
+0:12
Half
13.11 mi12:46:371:55:038:476:11
9:04
+0:01
25K
15.53 mi13:09:452:18:118:5423:08
9:32
+0:28
30K
18.64 mi13:40:362:49:029:0430:51
9:56
+0:24
20M
20.00 mi13:59:123:07:389:2318:36
13:41
+3:45
21M
21.00 mi14:10:093:18:359:2710:57
10:57
-2:44
35K
21.75 mi14:17:123:25:389:277:03
9:25
-1:32
23M
23.00 mi14:31:153:39:419:3314:03
11:13
+1:48
24M
24.00 mi14:42:243:50:509:3711:09
11:09
-0:04
40K
24.85 mi14:52:034:00:299:419:39
11:17
+0:08
25.2M
25.20 mi14:56:184:04:449:434:15
12:19
+1:02
Finish
26.22 mi15:06:254:14:519:4410:07
9:56
-2:23

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

8:28 /mi

Average Pace

9:44 /mi

Slowest Pace

13:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

1:55:03

45% of race

Time at Steady Pace

1:11:09

28% of race

Time at Slower Pace

1:08:39

27% of race

Average Pace: 9:43 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:17:5126:178:2826:17
8:28
#17297
10K
6.21 mi11:44:4953:158:3426:58
8:41
#18335
15K
9.32 mi12:12:201:20:468:4027:31
8:51
#18847
20K
12.43 mi12:40:261:48:528:4628:06
9:03
#19117
Half
13.11 mi12:46:371:55:038:476:11
9:04
#19210
25K
15.53 mi13:09:452:18:118:5423:08
9:32
#19600
30K
18.64 mi13:40:362:49:029:0430:51
9:56
#19914
20M
20.00 mi13:59:123:07:389:2318:36
13:41
#20898
21M
21.00 mi14:10:093:18:359:2710:57
10:57
#20875
35K
21.75 mi14:17:123:25:389:277:03
9:25
#20814
23M
23.00 mi14:31:153:39:419:3314:03
11:13
#20975
24M
24.00 mi14:42:243:50:509:3711:09
11:09
#21101
40K
24.85 mi14:52:034:00:299:419:39
11:17
#21196
25.2M
25.20 mi14:56:184:04:449:434:15
12:19
#21243
Finish
26.22 mi15:06:254:14:519:4410:07
9:56
#21250
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi172976129612919847(Top 75%)7599(Top 67%)7599(Top 418%)
10K6.21 mi3.10 mi18335-10386719-5906719-59019323(Top 73%)7281(Top 64%)7281(Top 401%)
15K9.32 mi3.11 mi18847-5127037-3187037-31819847(Top 75%)7599(Top 67%)7599(Top 418%)
20K12.43 mi3.11 mi19117-2707185-1487185-14819914(Top 75%)7631(Top 67%)7631(Top 420%)
Half13.11 mi0.68 mi19210-937242-577242-5720737(Top 78%)8099(Top 71%)8099(Top 446%)
25K15.53 mi2.42 mi19600-3907484-2427484-24220980(Top 79%)8258(Top 72%)8258(Top 454%)
30K18.64 mi3.11 mi19914-3147684-2007684-20020824(Top 78%)8245(Top 72%)8245(Top 454%)
20M20.00 mi1.36 mi20898-9848236-5528236-55225657(Top 96%)10939(Top 96%)10939(Top 602%)
21M21.00 mi1.00 mi20875+238241-58241-520735(Top 78%)8317(Top 73%)8317(Top 458%)
35K21.75 mi0.75 mi20814+618217+248217+2419658(Top 74%)7743(Top 68%)7743(Top 426%)
23M23.00 mi1.25 mi20975-1618327-1108327-11022759(Top 85%)9466(Top 83%)9466(Top 521%)
24M24.00 mi1.00 mi21101-1268404-778404-7723318(Top 88%)9804(Top 86%)9804(Top 540%)
40K24.85 mi0.85 mi21196-958462-588462-5822883(Top 86%)9599(Top 84%)9599(Top 528%)
25.2M25.20 mi0.35 mi21243-478488-268488-2623021(Top 86%)9667(Top 85%)9667(Top 532%)
Finish26.22 mi1.02 mi21250-78499-118499-1121568(Top 81%)8889(Top 78%)8889(Top 489%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21stories
+97ft-345ft

Overall

19847

Females

7599

F45-49

7599

5K→10K

3.1 - 6.2 mi

Top 73%
×5stories
+79ft-138ft

Overall

19323

Females

7281

F45-49

7281

10K→15K

6.2 - 9.3 mi

Top 75%
×3stories
+67ft-78ft

Overall

19847

Females

7599

F45-49

7599

15K→20K

9.3 - 12.4 mi

Top 75%
×5stories
+106ft-86ft

Overall

19914

Females

7631

F45-49

7631

20K→Half

12.4 - 13.1 mi

Top 78%
×2stories
+19ft-37ft

Overall

20737

Females

8099

F45-49

8099

Half→25K

13.1 - 15.5 mi

Top 79%
×4stories
+66ft-88ft

Overall

20980

Females

8258

F45-49

8258

25K→30K

15.5 - 18.6 mi

Top 78%
×9stories
+181ft-148ft

Overall

20824

Females

8245

F45-49

8245

30K→20M

18.6 - 20.0 mi

Top 96%
×5stories
+64ft-50ft

Overall

25657

Females

10939

F45-49

10939

20M→21M

20.0 - 21.0 mi

Top 78%
×8stories
+106ft-24ft

Overall

20735

Females

8317

F45-49

8317

21M→35K

21.0 - 21.8 mi

Top 74%
×7stories
+17ft-86ft

Overall

19658

Females

7743

F45-49

7743

35K→23M

21.8 - 23.0 mi

Top 85%
×5stories
+23ft-63ft

Overall

22759

Females

9466

F45-49

9466

23M→24M

23.0 - 24.0 mi

Top 88%
×6stories
+12ft-82ft

Overall

23318

Females

9804

F45-49

9804

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

22883

Females

9599

F45-49

9599

40K→25.2M

24.9 - 25.2 mi

Top 86%
×1story
+13ft-16ft

Overall

23021

Females

9667

F45-49

9667

25.2M→Finish

25.2 - 26.2 mi

Top 81%
×2stories
+22ft-21ft

Overall

21568

Females

8889

F45-49

8889

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
583
Passed By
4536
Net Change
-3953
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17297
5K → 10K511089-1038#17297#18335
10K → 15K55567-512#18335#18847
15K → 20K88358-270#18847#19117
20K → Half7100-93#19117#19210
Half → 25K40430-390#19210#19600
25K → 30K78392-314#19600#19914
30K → 20M5989-984#19914#20898
20M → 21M7148+23#20898#20875
21M → 35K709+61#20875#20814
35K → 23M35196-161#20814#20975
23M → 24M16142-126#20975#21101
24M → 40K26121-95#21101#21196
40K → 25.2M956-47#21196#21243
25.2M → Finish3239-7#21243#21250
TOTALS5834536-3953
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing