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BOSTON MARATHON 2023

Terry Casey

Bib: 19020•F

NM

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 39%
Gender (Female)
#0 / 11423
Top 19%
Masters (Masters Women)
#0 / 6539
Top 8%
Division (F40-44)
#0 / 1878
Top 18%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:49
Rank: #11166
Start → 5K
7:40/mi
23:49 split
10K· 6.21 mi
46:43
Rank: #10217 (+949)
5K → 10K
7:22/mi
22:54 split
15K· 9.32 mi
1:09:45
Rank: #9893 (+324)
10K → 15K
7:25/mi
23:02 split
20K· 12.43 mi
1:33:09
Rank: #9788 (+105)
15K → 20K
7:32/mi
23:24 split
Half· 13.11 mi
1:38:15
Rank: #9806 (-18)
20K → Half
7:29/mi
5:06 split
25K· 15.53 mi
1:56:36
Rank: #9706 (+100)
Half → 25K
7:34/mi
18:21 split
30K· 18.64 mi
2:21:37
Rank: #9954 (-248)
25K → 30K
8:03/mi
25:01 split
20M
2:32:41
Rank: #10021 (-67)
30K → 20M
8:09/mi
11:04 split
21M
2:41:02
Rank: #9971 (+50)
20M → 21M
8:21/mi
8:21 split
35K· 21.75 mi
2:47:02
Rank: #10027 (-56)
21M → 35K
8:01/mi
6:00 split
23M
2:57:23
Rank: #10120 (-93)
35K → 23M
8:16/mi
10:21 split
24M
3:05:33
Rank: #10185 (-65)
23M → 24M
8:10/mi
8:10 split
40K· 24.85 mi
3:12:38
Rank: #10227 (-42)
24M → 40K
8:17/mi
7:05 split
25.2M
3:15:37
Rank: #10227
40K → 25.2M
8:39/mi
2:59 split
Finish· 26.22 mi
3:23:39
Rank: #10252 (-25)
25.2M → Finish
7:53/mi
8:02 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:15
Pace7:30 /mi
2nd Half
Distance13.11 mi
Time1:45:24
Pace8:02 /mi
📊Positive Split: 7.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:2123:497:4023:49
7:40
-
10K
6.21 mi11:38:1546:437:3122:54
7:22
-0:18
15K
9.32 mi12:01:171:09:457:2923:02
7:25
+0:03
20K
12.43 mi12:24:411:33:097:3023:24
7:32
+0:07
Half
13.11 mi12:29:471:38:157:305:06
7:29
-0:03
25K
15.53 mi12:48:081:56:367:3018:21
7:34
+0:05
30K
18.64 mi13:13:092:21:377:3625:01
8:03
+0:29
20M
20.00 mi13:24:132:32:417:3811:04
8:09
+0:06
21M
21.00 mi13:32:342:41:027:408:21
8:21
+0:12
35K
21.75 mi13:38:342:47:027:416:00
8:01
-0:20
23M
23.00 mi13:48:552:57:237:4310:21
8:16
+0:15
24M
24.00 mi13:57:053:05:337:448:10
8:10
-0:06
40K
24.85 mi14:04:103:12:387:457:05
8:17
+0:07
25.2M
25.20 mi14:07:093:15:377:462:59
8:39
+0:22
Finish
26.22 mi14:15:113:23:397:468:02
7:53
-0:46

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

7:22 /mi

Average Pace

7:46 /mi

Slowest Pace

8:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:35:39

76% of race

Time at Steady Pace

48:00

24% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:46 /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 mi11:15:2123:497:4023:49
7:40
#11166
10K
6.21 mi11:38:1546:437:3122:54
7:22
#10217
15K
9.32 mi12:01:171:09:457:2923:02
7:25
#9893
20K
12.43 mi12:24:411:33:097:3023:24
7:32
#9788
Half
13.11 mi12:29:471:38:157:305:06
7:29
#9806
25K
15.53 mi12:48:081:56:367:3018:21
7:34
#9706
30K
18.64 mi13:13:092:21:377:3625:01
8:03
#9954
20M
20.00 mi13:24:132:32:417:3811:04
8:09
#10021
21M
21.00 mi13:32:342:41:027:408:21
8:21
#9971
35K
21.75 mi13:38:342:47:027:416:00
8:01
#10027
23M
23.00 mi13:48:552:57:237:4310:21
8:16
#10120
24M
24.00 mi13:57:053:05:337:448:10
8:10
#10185
40K
24.85 mi14:04:103:12:387:457:05
8:17
#10227
25.2M
25.20 mi14:07:093:15:377:462:59
8:39
#10227
Finish
26.22 mi14:15:113:23:397:468:02
7:53
#10252
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi11166241324139470(Top 36%)1612(Top 14%)1612(Top 86%)
10K6.21 mi3.10 mi10217+9491936+4771936+4779403(Top 35%)1586(Top 14%)1586(Top 84%)
15K9.32 mi3.11 mi9893+3241782+1541782+1549470(Top 36%)1612(Top 14%)1612(Top 86%)
20K12.43 mi3.11 mi9788+1051748+341748+349587(Top 36%)1732(Top 15%)1732(Top 92%)
Half13.11 mi0.68 mi9806-181755-71755-710103(Top 38%)1939(Top 17%)1939(Top 103%)
25K15.53 mi2.42 mi9706+1001729+261729+269325(Top 35%)1697(Top 15%)1697(Top 90%)
30K18.64 mi3.11 mi9954-2481872-1431872-14311320(Top 43%)2795(Top 24%)2795(Top 149%)
20M20.00 mi1.36 mi10021-671930-581930-5811309(Top 42%)2883(Top 25%)2883(Top 154%)
21M21.00 mi1.00 mi9971+501936-61936-69556(Top 36%)2170(Top 19%)2170(Top 116%)
35K21.75 mi0.75 mi10027-561986-501986-5012276(Top 46%)3567(Top 31%)3567(Top 190%)
23M23.00 mi1.25 mi10120-932056-702056-7011645(Top 44%)3319(Top 29%)3319(Top 177%)
24M24.00 mi1.00 mi10185-652116-602116-6012384(Top 47%)3781(Top 33%)3781(Top 201%)
40K24.85 mi0.85 mi10227-422161-452161-4511927(Top 45%)3617(Top 32%)3617(Top 193%)
25.2M25.20 mi0.35 mi102272177-162177-1610491(Top 39%)2917(Top 26%)2917(Top 155%)
Finish26.22 mi1.02 mi10252-252223-462223-4611300(Top 42%)3338(Top 29%)3338(Top 178%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21story building
+97ft-345ft

Overall

9470

Females

1612

F40-44

1612

5K→10K

3.1 - 6.2 mi

Top 35%
×5story building
+79ft-138ft

Overall

9403

Females

1586

F40-44

1586

10K→15K

6.2 - 9.3 mi

Top 36%
×3story building
+67ft-78ft

Overall

9470

Females

1612

F40-44

1612

15K→20K

9.3 - 12.4 mi

Top 36%
×5story building
+106ft-86ft

Overall

9587

Females

1732

F40-44

1732

20K→Half

12.4 - 13.1 mi

Top 38%
×2story building
+19ft-37ft

Overall

10103

Females

1939

F40-44

1939

Half→25K

13.1 - 15.5 mi

Top 35%
×4story building
+66ft-88ft

Overall

9325

Females

1697

F40-44

1697

25K→30K

15.5 - 18.6 mi

Top 43%
×9story building
+181ft-148ft

Overall

11320

Females

2795

F40-44

2795

30K→20M

18.6 - 20.0 mi

Top 42%
×5story building
+64ft-50ft

Overall

11309

Females

2883

F40-44

2883

20M→21M

20.0 - 21.0 mi

Top 36%
×8story building
+106ft-24ft

Overall

9556

Females

2170

F40-44

2170

21M→35K

21.0 - 21.8 mi

Top 46%
×7story building
+17ft-86ft

Overall

12276

Females

3567

F40-44

3567

35K→23M

21.8 - 23.0 mi

Top 44%
×5story building
+23ft-63ft

Overall

11645

Females

3319

F40-44

3319

23M→24M

23.0 - 24.0 mi

Top 47%
×6story building
+12ft-82ft

Overall

12384

Females

3781

F40-44

3781

24M→40K

24.0 - 24.9 mi

Top 45%
×1story
+6ft-20ft

Overall

11927

Females

3617

F40-44

3617

40K→25.2M

24.9 - 25.2 mi

Top 39%
×1story
+13ft-16ft

Overall

10491

Females

2917

F40-44

2917

25.2M→Finish

25.2 - 26.2 mi

Top 42%
×2story building
+22ft-21ft

Overall

11300

Females

3338

F40-44

3338

Passing Analysis

Category:
Athletes Passed
2311*
Passed By
1394
Net Change
+914
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11166
5K → 10K989*40+949#11166#10217
10K → 15K375*51+324#10217#9893
15K → 20K210*105+105#9893#9788
20K → Half2341-18#9788#9806
Half → 25K16060+100#9806#9706
25K → 30K83*331-248#9706#9954
30K → 20M71137-67#9954#10021
20M → 21M116*66+50#10021#9971
21M → 35K3287-56#9971#10027
35K → 23M54147-93#10027#10120
23M → 24M55119-65#10120#10185
24M → 40K4991-42#10185#10227
40K → 25.2M35*350#10227#10227
25.2M → Finish5984-25#10227#10252
TOTALS2311*1394+914

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

📊

Passing Visuals

Category:
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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