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BOSTON MARATHON 2023

Cassie Mclaughlin

Bib: 29355•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 23%
Gender (Female)
#0 / 11423
Top 6%
Division (F18-39)
#0 / 4884
Top 11%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:03
Rank: #8986
Start → 5K
23:03 | 7:25/mi
10K· 6.21 mi
44:52
Rank: #7910 (+1076)
5K → 10K
21:49 | 7:01/mi
15K· 9.32 mi
1:06:44
Rank: #7488 (+422)
10K → 15K
21:52 | 7:02/mi
20K· 12.43 mi
1:28:46
Rank: #7181 (+307)
15K → 20K
22:02 | 7:06/mi
Half· 13.11 mi
1:33:30
Rank: #7133 (+48)
20K → Half
4:44 | 6:56/mi
25K· 15.53 mi
1:50:45
Rank: #6944 (+189)
Half → 25K
17:15 | 7:07/mi
30K· 18.64 mi
2:13:37
Rank: #6795 (+149)
25K → 30K
22:52 | 7:22/mi
20M
2:23:42
Rank: #6739 (+56)
30K → 20M
10:05 | 7:25/mi
21M
2:31:21
Rank: #6633 (+106)
20M → 21M
7:39 | 7:39/mi
35K· 21.75 mi
2:36:47
Rank: #6611 (+22)
21M → 35K
5:26 | 7:16/mi
23M
2:45:56
Rank: #6499 (+112)
35K → 23M
9:09 | 7:18/mi
24M
2:53:11
Rank: #6433 (+66)
23M → 24M
7:15 | 7:15/mi
40K· 24.85 mi
2:59:25
Rank: #6352 (+81)
24M → 40K
6:14 | 7:17/mi
25.2M
3:02:06
Rank: #6316 (+36)
40K → 25.2M
2:41 | 7:47/mi
Finish· 26.22 mi
3:09:04
Rank: #6203 (+113)
25.2M → Finish
6:58 | 6:50/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:33:30
Pace7:08 /mi
2nd Half
Distance13.11 mi
Time1:35:34
Pace7:17 /mi
📊Positive Split: 2.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:40:5323:037:2523:03
7:25
-
10K
6.21 mi12:02:4244:527:1321:49
7:01
-0:24
15K
9.32 mi12:24:341:06:447:1021:52
7:02
+0:01
20K
12.43 mi12:46:361:28:467:0922:02
7:06
+0:04
Half
13.11 mi12:51:201:33:307:084:44
6:56
-0:10
25K
15.53 mi13:08:351:50:457:0817:15
7:07
+0:11
30K
18.64 mi13:31:272:13:377:1022:52
7:22
+0:15
20M
20.00 mi13:41:322:23:427:1110:05
7:25
+0:03
21M
21.00 mi13:49:112:31:217:127:39
7:39
+0:14
35K
21.75 mi13:54:372:36:477:135:26
7:16
-0:23
23M
23.00 mi14:03:462:45:567:139:09
7:18
+0:02
24M
24.00 mi14:11:012:53:117:137:15
7:15
-0:03
40K
24.85 mi14:17:152:59:257:136:14
7:17
+0:02
25.2M
25.20 mi14:19:563:02:067:142:41
7:47
+0:30
Finish
26.22 mi14:26:543:09:047:136:58
6:50
-0:57

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

6:50 /mi

Average Pace

7:13 /mi

Slowest Pace

7:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:58:44

95% of race

Time at Steady Pace

10:20

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:13 /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 mi11:40:5323:037:2523:03
7:25
#8986
10K
6.21 mi12:02:4244:527:1321:49
7:01
#7910
15K
9.32 mi12:24:341:06:447:1021:52
7:02
#7488
20K
12.43 mi12:46:361:28:467:0922:02
7:06
#7181
Half
13.11 mi12:51:201:33:307:084:44
6:56
#7133
25K
15.53 mi13:08:351:50:457:0817:15
7:07
#6944
30K
18.64 mi13:31:272:13:377:1022:52
7:22
#6795
20M
20.00 mi13:41:322:23:427:1110:05
7:25
#6739
21M
21.00 mi13:49:112:31:217:127:39
7:39
#6633
35K
21.75 mi13:54:372:36:477:135:26
7:16
#6611
23M
23.00 mi14:03:462:45:567:139:09
7:18
#6499
24M
24.00 mi14:11:012:53:117:137:15
7:15
#6433
40K
24.85 mi14:17:152:59:257:136:14
7:17
#6352
25.2M
25.20 mi14:19:563:02:067:142:41
7:47
#6316
Finish
26.22 mi14:26:543:09:047:136:58
6:50
#6203
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8986138513856810(Top 26%)705(Top 6%)705(Top 14%)
10K6.21 mi3.10 mi7910+1076983+402983+4026980(Top 26%)741(Top 6%)741(Top 15%)
15K9.32 mi3.11 mi7488+422865+118865+1186810(Top 26%)705(Top 6%)705(Top 14%)
20K12.43 mi3.11 mi7181+307791+74791+746521(Top 24%)659(Top 6%)659(Top 13%)
Half13.11 mi0.68 mi7133+48777+14777+146271(Top 24%)571(Top 5%)571(Top 12%)
25K15.53 mi2.42 mi6944+189739+38739+386206(Top 23%)614(Top 5%)614(Top 13%)
30K18.64 mi3.11 mi6795+149726+13726+136378(Top 24%)730(Top 6%)730(Top 15%)
20M20.00 mi1.36 mi6739+56723+3723+36312(Top 24%)786(Top 7%)786(Top 16%)
21M21.00 mi1.00 mi6633+106718+5718+55386(Top 20%)635(Top 6%)635(Top 13%)
35K21.75 mi0.75 mi6611+22719-1719-16923(Top 26%)1064(Top 9%)1064(Top 22%)
23M23.00 mi1.25 mi6499+112700+19700+195375(Top 20%)632(Top 6%)632(Top 13%)
24M24.00 mi1.00 mi6433+66694+6694+66059(Top 23%)907(Top 8%)907(Top 19%)
40K24.85 mi0.85 mi6352+81680+14680+145421(Top 20%)776(Top 7%)776(Top 16%)
25.2M25.20 mi0.35 mi6316+36675+5675+55343(Top 20%)835(Top 7%)835(Top 17%)
Finish26.22 mi1.02 mi6203+113664+11664+114306(Top 16%)531(Top 5%)531(Top 11%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 26%
×21stories
+97ft-345ft

Overall

6810

Females

705

F18-39

705

5K→10K

3.1 - 6.2 mi

Top 26%
×5stories
+79ft-138ft

Overall

6980

Females

741

F18-39

741

10K→15K

6.2 - 9.3 mi

Top 26%
×3stories
+67ft-78ft

Overall

6810

Females

705

F18-39

705

15K→20K

9.3 - 12.4 mi

Top 24%
×5stories
+106ft-86ft

Overall

6521

Females

659

F18-39

659

20K→Half

12.4 - 13.1 mi

Top 24%
×2stories
+19ft-37ft

Overall

6271

Females

571

F18-39

571

Half→25K

13.1 - 15.5 mi

Top 23%
×4stories
+66ft-88ft

Overall

6206

Females

614

F18-39

614

25K→30K

15.5 - 18.6 mi

Top 24%
×9stories
+181ft-148ft

Overall

6378

Females

730

F18-39

730

30K→20M

18.6 - 20.0 mi

Top 24%
×5stories
+64ft-50ft

Overall

6312

Females

786

F18-39

786

20M→21M

20.0 - 21.0 mi

Top 20%
×8stories
+106ft-24ft

Overall

5386

Females

635

F18-39

635

21M→35K

21.0 - 21.8 mi

Top 26%
×7stories
+17ft-86ft

Overall

6923

Females

1064

F18-39

1064

35K→23M

21.8 - 23.0 mi

Top 20%
×5stories
+23ft-63ft

Overall

5375

Females

632

F18-39

632

23M→24M

23.0 - 24.0 mi

Top 23%
×6stories
+12ft-82ft

Overall

6059

Females

907

F18-39

907

24M→40K

24.0 - 24.9 mi

Top 20%
×1story
+6ft-20ft

Overall

5421

Females

776

F18-39

776

40K→25.2M

24.9 - 25.2 mi

Top 20%
×1story
+13ft-16ft

Overall

5343

Females

835

F18-39

835

25.2M→Finish

25.2 - 26.2 mi

Top 16%
×2stories
+22ft-21ft

Overall

4306

Females

531

F18-39

531

Passing Analysis

Category:
Athletes Passed
3022
Passed By
239
Net Change
+2783
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8986
5K → 10K109519+1076#8986#7910
10K → 15K43816+422#7910#7488
15K → 20K3136+307#7488#7181
20K → Half513+48#7181#7133
Half → 25K20112+189#7133#6944
25K → 30K19950+149#6944#6795
30K → 20M8731+56#6795#6739
20M → 21M11812+106#6739#6633
21M → 35K4624+22#6633#6611
35K → 23M12816+112#6611#6499
23M → 24M8721+66#6499#6433
24M → 40K9918+81#6433#6352
40K → 25.2M426+36#6352#6316
25.2M → Finish1185+113#6316#6203
TOTALS3022239+2783
📊

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