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BOSTON MARATHON 2023

Megan Cassidy

Bib: 19205•F

FL

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 44%
Masters (Masters Women)
#0 / 6539
Top 32%
Division (F40-44)
#0 / 1878
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:00
Rank: #16649
Start → 5K
26:00 | 8:22/mi
10K· 6.21 mi
51:06
Rank: #15987 (+662)
5K → 10K
25:06 | 8:05/mi
15K· 9.32 mi
1:16:33
Rank: #15930 (+57)
10K → 15K
25:27 | 8:11/mi
20K· 12.43 mi
1:42:48
Rank: #16071 (-141)
15K → 20K
26:15 | 8:27/mi
Half· 13.11 mi
1:48:28
Rank: #16087 (-16)
20K → Half
5:40 | 8:18/mi
25K· 15.53 mi
2:08:43
Rank: #15944 (+143)
Half → 25K
20:15 | 8:21/mi
30K· 18.64 mi
2:35:43
Rank: #15834 (+110)
25K → 30K
27:00 | 8:41/mi
20M
2:47:52
Rank: #15850 (-16)
30K → 20M
12:09 | 8:56/mi
21M
2:57:33
Rank: #15900 (-50)
20M → 21M
9:41 | 9:41/mi
35K· 21.75 mi
3:03:32
Rank: #15740 (+160)
21M → 35K
5:59 | 8:00/mi
23M
3:14:16
Rank: #15599 (+141)
35K → 23M
10:44 | 8:34/mi
24M
3:22:26
Rank: #15454 (+145)
23M → 24M
8:10 | 8:10/mi
40K· 24.85 mi
3:29:38
Rank: #15359 (+95)
24M → 40K
7:12 | 8:25/mi
25.2M
3:33:01
Rank: #15363 (-4)
40K → 25.2M
3:23 | 9:49/mi
Finish· 26.22 mi
3:41:11
Rank: #15233 (+130)
25.2M → Finish
8:10 | 8:01/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:28
Pace8:16 /mi
2nd Half
Distance13.11 mi
Time1:52:43
Pace8:36 /mi
📊Positive Split: 3.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:5026:008:2226:00
8:22
-
10K
6.21 mi11:43:5651:068:1325:06
8:05
-0:17
15K
9.32 mi12:09:231:16:338:1325:27
8:11
+0:06
20K
12.43 mi12:35:381:42:488:1626:15
8:27
+0:16
Half
13.11 mi12:41:181:48:288:165:40
8:18
-0:09
25K
15.53 mi13:01:332:08:438:1720:15
8:21
+0:03
30K
18.64 mi13:28:332:35:438:2127:00
8:41
+0:20
20M
20.00 mi13:40:422:47:528:2412:09
8:56
+0:15
21M
21.00 mi13:50:232:57:338:279:41
9:41
+0:45
35K
21.75 mi13:56:223:03:328:265:59
8:00
-1:41
23M
23.00 mi14:07:063:14:168:2710:44
8:34
+0:34
24M
24.00 mi14:15:163:22:268:268:10
8:10
-0:24
40K
24.85 mi14:22:283:29:388:267:12
8:25
+0:15
25.2M
25.20 mi14:25:513:33:018:273:23
9:49
+1:24
Finish
26.22 mi14:34:013:41:118:278:10
8:01
-1:48

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

8:00 /mi

Average Pace

8:27 /mi

Slowest Pace

9:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

39:15

18% of race

Time at Steady Pace

2:09:43

59% of race

Time at Slower Pace

52:13

24% of race

Average Pace: 8:26 /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 mi11:18:5026:008:2226:00
8:22
#16649
10K
6.21 mi11:43:5651:068:1325:06
8:05
#15987
15K
9.32 mi12:09:231:16:338:1325:27
8:11
#15930
20K
12.43 mi12:35:381:42:488:1626:15
8:27
#16071
Half
13.11 mi12:41:181:48:288:165:40
8:18
#16087
25K
15.53 mi13:01:332:08:438:1720:15
8:21
#15944
30K
18.64 mi13:28:332:35:438:2127:00
8:41
#15834
20M
20.00 mi13:40:422:47:528:2412:09
8:56
#15850
21M
21.00 mi13:50:232:57:338:279:41
9:41
#15900
35K
21.75 mi13:56:223:03:328:265:59
8:00
#15740
23M
23.00 mi14:07:063:14:168:2710:44
8:34
#15599
24M
24.00 mi14:15:163:22:268:268:10
8:10
#15454
40K
24.85 mi14:22:283:29:388:267:12
8:25
#15359
25.2M
25.20 mi14:25:513:33:018:273:23
9:49
#15363
Finish
26.22 mi14:34:013:41:118:278:10
8:01
#15233
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi166495697569715813(Top 59%)5173(Top 45%)5173(Top 275%)
10K6.21 mi3.10 mi15987+6625273+4245273+42415376(Top 58%)4897(Top 43%)4897(Top 261%)
15K9.32 mi3.11 mi15930+575238+355238+3515813(Top 59%)5173(Top 45%)5173(Top 275%)
20K12.43 mi3.11 mi16071-1415350-1125350-11216539(Top 62%)5667(Top 50%)5667(Top 302%)
Half13.11 mi0.68 mi16087-165367-175367-1716523(Top 62%)5606(Top 49%)5606(Top 299%)
25K15.53 mi2.42 mi15944+1435300+675300+6715283(Top 57%)5007(Top 44%)5007(Top 267%)
30K18.64 mi3.11 mi15834+1105272+285272+2815466(Top 58%)5200(Top 46%)5200(Top 277%)
20M20.00 mi1.36 mi15850-165311-395311-3916229(Top 61%)5700(Top 50%)5700(Top 304%)
21M21.00 mi1.00 mi15900-505354-435354-4316786(Top 63%)6062(Top 53%)6062(Top 323%)
35K21.75 mi0.75 mi15740+1605278+765278+7612196(Top 46%)3559(Top 31%)3559(Top 190%)
23M23.00 mi1.25 mi15599+1415224+545224+5413686(Top 51%)4444(Top 39%)4444(Top 237%)
24M24.00 mi1.00 mi15454+1455146+785146+7812429(Top 47%)3826(Top 33%)3826(Top 204%)
40K24.85 mi0.85 mi15359+955098+485098+4812887(Top 48%)4160(Top 36%)4160(Top 222%)
25.2M25.20 mi0.35 mi15363-45114-165114-1616603(Top 62%)6192(Top 54%)6192(Top 330%)
Finish26.22 mi1.02 mi15233+1305043+715043+7112277(Top 46%)3861(Top 34%)3861(Top 206%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21stories
+97ft-345ft

Overall

15813

Females

5173

F40-44

5173

5K→10K

3.1 - 6.2 mi

Top 58%
×5stories
+79ft-138ft

Overall

15376

Females

4897

F40-44

4897

10K→15K

6.2 - 9.3 mi

Top 59%
×3stories
+67ft-78ft

Overall

15813

Females

5173

F40-44

5173

15K→20K

9.3 - 12.4 mi

Top 62%
×5stories
+106ft-86ft

Overall

16539

Females

5667

F40-44

5667

20K→Half

12.4 - 13.1 mi

Top 62%
×2stories
+19ft-37ft

Overall

16523

Females

5606

F40-44

5606

Half→25K

13.1 - 15.5 mi

Top 57%
×4stories
+66ft-88ft

Overall

15283

Females

5007

F40-44

5007

25K→30K

15.5 - 18.6 mi

Top 58%
×9stories
+181ft-148ft

Overall

15466

Females

5200

F40-44

5200

30K→20M

18.6 - 20.0 mi

Top 61%
×5stories
+64ft-50ft

Overall

16229

Females

5700

F40-44

5700

20M→21M

20.0 - 21.0 mi

Top 63%
×8stories
+106ft-24ft

Overall

16786

Females

6062

F40-44

6062

21M→35K

21.0 - 21.8 mi

Top 46%
×7stories
+17ft-86ft

Overall

12196

Females

3559

F40-44

3559

35K→23M

21.8 - 23.0 mi

Top 51%
×5stories
+23ft-63ft

Overall

13686

Females

4444

F40-44

4444

23M→24M

23.0 - 24.0 mi

Top 47%
×6stories
+12ft-82ft

Overall

12429

Females

3826

F40-44

3826

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

12887

Females

4160

F40-44

4160

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

16603

Females

6192

F40-44

6192

25.2M→Finish

25.2 - 26.2 mi

Top 46%
×2stories
+22ft-21ft

Overall

12277

Females

3861

F40-44

3861

Passing Analysis

Category:
Athletes Passed
2495
Passed By
1079
Net Change
+1416
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16649
5K → 10K765103+662#16649#15987
10K → 15K229172+57#15987#15930
15K → 20K125266-141#15930#16071
20K → Half2541-16#16071#16087
Half → 25K20259+143#16087#15944
25K → 30K225115+110#15944#15834
30K → 20M95111-16#15834#15850
20M → 21M63113-50#15850#15900
21M → 35K1611+160#15900#15740
35K → 23M15817+141#15740#15599
23M → 24M1549+145#15599#15454
24M → 40K11520+95#15454#15359
40K → 25.2M2933-4#15359#15363
25.2M → Finish14919+130#15363#15233
TOTALS24951079+1416
📊

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