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BOSTON MARATHON 2023

Caitlin Castagna

Bib: 19505•F

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 36%
Masters (Masters Women)
#0 / 6539
Top 22%
Division (F40-44)
#0 / 1878
Top 41%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:23/mi
26:03
↑ 97↓ 3451.5%
10K· 6.21 mi
8:09/mi
51:23
↑ 79↓ 1380.4%
15K· 9.32 mi
8:10/mi
1:16:45
↑ 67↓ 78
20K· 12.43 mi
8:11/mi
1:42:12
↑ 106↓ 860.1%
Half· 13.11 mi
8:20/mi
1:47:53
↑ 19↓ 370.5%
25K· 15.53 mi
8:09/mi
2:07:38
↑ 66↓ 880.2%
30K· 18.64 mi
8:22/mi
2:33:39
↑ 181↓ 1480.2%
20M
8:22/mi
2:45:01
↑ 64↓ 500.2%
21M
8:43/mi
2:53:44
↑ 106↓ 241.6%
35K· 21.75 mi
8:01/mi
2:59:44
↑ 17↓ 861.7%
23M
8:14/mi
3:10:03
↑ 23↓ 630.6%
24M
7:43/mi
3:17:46
↓ 821.3%
40K· 24.85 mi
7:48/mi
3:24:26
↓ 200.3%
25.2M
8:25/mi
3:27:20
↑ 13↓ 160.2%
Finish· 26.22 mi
7:27/mi
3:34:56
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:47:53
Pace8:14 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:47:03
Pace8:10 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:0426:038:2326:03
8:23
-
10K
6.21 mi11:43:2451:238:1625:20
8:09
-0:14
15K
9.32 mi12:08:461:16:458:1425:22
8:10
+0:01
20K
12.43 mi12:34:131:42:128:1325:27
8:11
+0:01
Half
13.11 mi12:39:541:47:538:145:41
8:20
+0:09
25K
15.53 mi12:59:392:07:388:1319:45
8:09
-0:11
30K
18.64 mi13:25:402:33:398:1526:01
8:22
+0:13
20M
20.00 mi13:37:022:45:018:1511:22
8:22
0:00
21M
21.00 mi13:45:452:53:448:168:43
8:43
+0:21
35K
21.75 mi13:51:452:59:448:166:00
8:01
-0:42
23M
23.00 mi14:02:043:10:038:1610:19
8:14
+0:13
24M
24.00 mi14:09:473:17:468:147:43
7:43
-0:31
40K
24.85 mi14:16:273:24:268:146:40
7:48
+0:05
25.2M
25.20 mi14:19:213:27:208:142:54
8:25
+0:37
Finish
26.22 mi14:26:573:34:568:127:36
7:27
-0:58

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

7:27 /mi

Average Pace

8:12 /mi

Slowest Pace

8:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:03:53

58% of race

Time at Steady Pace

1:31:03

42% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:12 /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 mi11:18:0426:038:2326:03
8:23
#16765
10K
6.21 mi11:43:2451:238:1625:20
8:09
#16289
15K
9.32 mi12:08:461:16:458:1425:22
8:10
#16073
20K
12.43 mi12:34:131:42:128:1325:27
8:11
#15734
Half
13.11 mi12:39:541:47:538:145:41
8:20
#15782
25K
15.53 mi12:59:392:07:388:1319:45
8:09
#15468
30K
18.64 mi13:25:402:33:398:1526:01
8:22
#15087
20M
20.00 mi13:37:022:45:018:1511:22
8:22
#14914
21M
21.00 mi13:45:452:53:448:168:43
8:43
#14712
35K
21.75 mi13:51:452:59:448:166:00
8:01
#14608
23M
23.00 mi14:02:043:10:038:1610:19
8:14
#14425
24M
24.00 mi14:09:473:17:468:147:43
7:43
#14169
40K
24.85 mi14:16:273:24:268:146:40
7:48
#13932
25.2M
25.20 mi14:19:213:27:208:142:54
8:25
#13857
Finish
26.22 mi14:26:573:34:568:127:36
7:27
#13617
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi167655771577115612(Top 59%)5054(Top 44%)5054(Top 269%)
10K6.21 mi3.10 mi16289+4765450+3215450+32115933(Top 60%)5230(Top 46%)5230(Top 278%)
15K9.32 mi3.11 mi16073+2165328+1225328+12215612(Top 59%)5054(Top 44%)5054(Top 269%)
20K12.43 mi3.11 mi15734+3395136+1925136+19214918(Top 56%)4661(Top 41%)4661(Top 248%)
Half13.11 mi0.68 mi15782-485170-345170-3416669(Top 63%)5680(Top 50%)5680(Top 302%)
25K15.53 mi2.42 mi15468+3145009+1615009+16113855(Top 52%)4131(Top 36%)4131(Top 220%)
30K18.64 mi3.11 mi15087+3814811+1984811+19813528(Top 51%)4042(Top 35%)4042(Top 215%)
20M20.00 mi1.36 mi14914+1734714+974714+9712812(Top 48%)3753(Top 33%)3753(Top 200%)
21M21.00 mi1.00 mi14712+2024620+944620+9411801(Top 44%)3307(Top 29%)3307(Top 176%)
35K21.75 mi0.75 mi14608+1044568+524568+5212333(Top 46%)3624(Top 32%)3624(Top 193%)
23M23.00 mi1.25 mi14425+1834490+784490+7811497(Top 43%)3259(Top 29%)3259(Top 174%)
24M24.00 mi1.00 mi14169+2564352+1384352+1389247(Top 35%)2235(Top 20%)2235(Top 119%)
40K24.85 mi0.85 mi13932+2374230+1224230+1228724(Top 33%)2060(Top 18%)2060(Top 110%)
25.2M25.20 mi0.35 mi13857+754190+404190+409090(Top 34%)2316(Top 20%)2316(Top 123%)
Finish26.22 mi1.02 mi13617+2404058+1324058+1328290(Top 31%)1965(Top 17%)1965(Top 105%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21story building
+97ft-345ft

Overall

15612

Females

5054

F40-44

5054

5K→10K

3.1 - 6.2 mi

Top 60%
×5story building
+79ft-138ft

Overall

15933

Females

5230

F40-44

5230

10K→15K

6.2 - 9.3 mi

Top 59%
×3story building
+67ft-78ft

Overall

15612

Females

5054

F40-44

5054

15K→20K

9.3 - 12.4 mi

Top 56%
×5story building
+106ft-86ft

Overall

14918

Females

4661

F40-44

4661

20K→Half

12.4 - 13.1 mi

Top 63%
×2story building
+19ft-37ft

Overall

16669

Females

5680

F40-44

5680

Half→25K

13.1 - 15.5 mi

Top 52%
×4story building
+66ft-88ft

Overall

13855

Females

4131

F40-44

4131

25K→30K

15.5 - 18.6 mi

Top 51%
×9story building
+181ft-148ft

Overall

13528

Females

4042

F40-44

4042

30K→20M

18.6 - 20.0 mi

Top 48%
×5story building
+64ft-50ft

Overall

12812

Females

3753

F40-44

3753

20M→21M

20.0 - 21.0 mi

Top 44%
×8story building
+106ft-24ft

Overall

11801

Females

3307

F40-44

3307

21M→35K

21.0 - 21.8 mi

Top 46%
×7story building
+17ft-86ft

Overall

12333

Females

3624

F40-44

3624

35K→23M

21.8 - 23.0 mi

Top 43%
×5story building
+23ft-63ft

Overall

11497

Females

3259

F40-44

3259

23M→24M

23.0 - 24.0 mi

Top 35%
×6story building
+12ft-82ft

Overall

9247

Females

2235

F40-44

2235

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

8724

Females

2060

F40-44

2060

40K→25.2M

24.9 - 25.2 mi

Top 34%
×1story
+13ft-16ft

Overall

9090

Females

2316

F40-44

2316

25.2M→Finish

25.2 - 26.2 mi

Top 31%
×2story building
+22ft-21ft

Overall

8290

Females

1965

F40-44

1965

Passing Analysis

Category:
Athletes Passed
3585
Passed By
437
Net Change
+3148
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16765
5K → 10K611135+476#16765#16289
10K → 15K321105+216#16289#16073
15K → 20K38344+339#16073#15734
20K → Half1361-48#15734#15782
Half → 25K32713+314#15782#15468
25K → 30K41231+381#15468#15087
30K → 20M18512+173#15087#14914
20M → 21M2097+202#14914#14712
21M → 35K1128+104#14712#14608
35K → 23M19411+183#14608#14425
23M → 24M2571+256#14425#14169
24M → 40K2392+237#14169#13932
40K → 25.2M772+75#13932#13857
25.2M → Finish2455+240#13857#13617
TOTALS3585437+3148
📊

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