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BOSTON MARATHON 2023

Heather Catlin

Bib: 21070•F

FL

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 45%
Masters (Masters Women)
#0 / 6539
Top 33%
Division (F45-49)
#0 / 1817
Top 38%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:27
Rank: #17647
Start → 5K
26:27 | 8:31/mi
10K· 6.21 mi
52:27
Rank: #17480 (+167)
5K → 10K
26:00 | 8:22/mi
15K· 9.32 mi
1:18:09
Rank: #17097 (+383)
10K → 15K
25:42 | 8:16/mi
20K· 12.43 mi
1:43:52
Rank: #16683 (+414)
15K → 20K
25:43 | 8:17/mi
Half· 13.11 mi
1:49:28
Rank: #16640 (+43)
20K → Half
5:36 | 8:12/mi
25K· 15.53 mi
2:09:25
Rank: #16263 (+377)
Half → 25K
19:57 | 8:14/mi
30K· 18.64 mi
2:36:14
Rank: #16031 (+232)
25K → 30K
26:49 | 8:38/mi
20M
2:48:01
Rank: #15913 (+118)
30K → 20M
11:47 | 8:40/mi
21M
2:57:04
Rank: #15743 (+170)
20M → 21M
9:03 | 9:03/mi
35K· 21.75 mi
3:03:18
Rank: #15674 (+69)
21M → 35K
6:14 | 8:20/mi
23M
3:13:57
Rank: #15519 (+155)
35K → 23M
10:39 | 8:30/mi
24M
3:22:19
Rank: #15425 (+94)
23M → 24M
8:22 | 8:22/mi
40K· 24.85 mi
3:29:45
Rank: #15388 (+37)
24M → 40K
7:26 | 8:42/mi
25.2M
3:32:56
Rank: #15342 (+46)
40K → 25.2M
3:11 | 9:14/mi
Finish· 26.22 mi
3:41:37
Rank: #15344 (-2)
25.2M → Finish
8:41 | 8:31/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:28
Pace8:21 /mi
2nd Half
Distance13.11 mi
Time1:52:09
Pace8:33 /mi
📊Positive Split: 2.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:2226:278:3126:27
8:31
-
10K
6.21 mi11:45:2252:278:2626:00
8:22
-0:09
15K
9.32 mi12:11:041:18:098:2325:42
8:16
-0:06
20K
12.43 mi12:36:471:43:528:2125:43
8:17
+0:01
Half
13.11 mi12:42:231:49:288:215:36
8:12
-0:05
25K
15.53 mi13:02:202:09:258:2019:57
8:14
+0:02
30K
18.64 mi13:29:092:36:148:2326:49
8:38
+0:24
20M
20.00 mi13:40:562:48:018:2411:47
8:40
+0:02
21M
21.00 mi13:49:592:57:048:269:03
9:03
+0:23
35K
21.75 mi13:56:133:03:188:266:14
8:20
-0:43
23M
23.00 mi14:06:523:13:578:2610:39
8:30
+0:10
24M
24.00 mi14:15:143:22:198:268:22
8:22
-0:08
40K
24.85 mi14:22:403:29:458:267:26
8:42
+0:20
25.2M
25.20 mi14:25:513:32:568:273:11
9:14
+0:32
Finish
26.22 mi14:34:323:41:378:288:41
8:31
-0:43

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

8:12 /mi

Average Pace

8:28 /mi

Slowest Pace

9:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:29:23

94% of race

Time at Steady Pace

12:14

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:27 /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 mi11:19:2226:278:3126:27
8:31
#17647
10K
6.21 mi11:45:2252:278:2626:00
8:22
#17480
15K
9.32 mi12:11:041:18:098:2325:42
8:16
#17097
20K
12.43 mi12:36:471:43:528:2125:43
8:17
#16683
Half
13.11 mi12:42:231:49:288:215:36
8:12
#16640
25K
15.53 mi13:02:202:09:258:2019:57
8:14
#16263
30K
18.64 mi13:29:092:36:148:2326:49
8:38
#16031
20M
20.00 mi13:40:562:48:018:2411:47
8:40
#15913
21M
21.00 mi13:49:592:57:048:269:03
9:03
#15743
35K
21.75 mi13:56:133:03:188:266:14
8:20
#15674
23M
23.00 mi14:06:523:13:578:2610:39
8:30
#15519
24M
24.00 mi14:15:143:22:198:268:22
8:22
#15425
40K
24.85 mi14:22:403:29:458:267:26
8:42
#15388
25.2M
25.20 mi14:25:513:32:568:273:11
9:14
#15342
Finish
26.22 mi14:34:323:41:378:288:41
8:31
#15344
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi176476339633916363(Top 61%)5511(Top 48%)5511(Top 303%)
10K6.21 mi3.10 mi17480+1676213+1266213+12617366(Top 65%)6099(Top 53%)6099(Top 336%)
15K9.32 mi3.11 mi17097+3835966+2475966+24716363(Top 61%)5511(Top 48%)5511(Top 303%)
20K12.43 mi3.11 mi16683+4145724+2425724+24215479(Top 58%)5018(Top 44%)5018(Top 276%)
Half13.11 mi0.68 mi16640+435710+145710+1415902(Top 60%)5234(Top 46%)5234(Top 288%)
25K15.53 mi2.42 mi16263+3775492+2185492+21814468(Top 54%)4495(Top 39%)4495(Top 247%)
30K18.64 mi3.11 mi16031+2325395+975395+9715120(Top 57%)5011(Top 44%)5011(Top 276%)
20M20.00 mi1.36 mi15913+1185348+475348+4714705(Top 55%)4832(Top 42%)4832(Top 266%)
21M21.00 mi1.00 mi15743+1705267+815267+8113722(Top 52%)4346(Top 38%)4346(Top 239%)
35K21.75 mi0.75 mi15674+695240+275240+2714332(Top 54%)4749(Top 42%)4749(Top 261%)
23M23.00 mi1.25 mi15519+1555176+645176+6413309(Top 50%)4251(Top 37%)4251(Top 234%)
24M24.00 mi1.00 mi15425+945126+505126+5013684(Top 51%)4503(Top 39%)4503(Top 248%)
40K24.85 mi0.85 mi15388+375117+95117+914494(Top 54%)5024(Top 44%)5024(Top 276%)
25.2M25.20 mi0.35 mi15342+465100+175100+1713881(Top 52%)4692(Top 41%)4692(Top 258%)
Finish26.22 mi1.02 mi15344-25114-145114-1415564(Top 58%)5569(Top 49%)5569(Top 306%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21stories
+97ft-345ft

Overall

16363

Females

5511

F45-49

5511

5K→10K

3.1 - 6.2 mi

Top 65%
×5stories
+79ft-138ft

Overall

17366

Females

6099

F45-49

6099

10K→15K

6.2 - 9.3 mi

Top 61%
×3stories
+67ft-78ft

Overall

16363

Females

5511

F45-49

5511

15K→20K

9.3 - 12.4 mi

Top 58%
×5stories
+106ft-86ft

Overall

15479

Females

5018

F45-49

5018

20K→Half

12.4 - 13.1 mi

Top 60%
×2stories
+19ft-37ft

Overall

15902

Females

5234

F45-49

5234

Half→25K

13.1 - 15.5 mi

Top 54%
×4stories
+66ft-88ft

Overall

14468

Females

4495

F45-49

4495

25K→30K

15.5 - 18.6 mi

Top 57%
×9stories
+181ft-148ft

Overall

15120

Females

5011

F45-49

5011

30K→20M

18.6 - 20.0 mi

Top 55%
×5stories
+64ft-50ft

Overall

14705

Females

4832

F45-49

4832

20M→21M

20.0 - 21.0 mi

Top 52%
×8stories
+106ft-24ft

Overall

13722

Females

4346

F45-49

4346

21M→35K

21.0 - 21.8 mi

Top 54%
×7stories
+17ft-86ft

Overall

14332

Females

4749

F45-49

4749

35K→23M

21.8 - 23.0 mi

Top 50%
×5stories
+23ft-63ft

Overall

13309

Females

4251

F45-49

4251

23M→24M

23.0 - 24.0 mi

Top 51%
×6stories
+12ft-82ft

Overall

13684

Females

4503

F45-49

4503

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

14494

Females

5024

F45-49

5024

40K→25.2M

24.9 - 25.2 mi

Top 52%
×1story
+13ft-16ft

Overall

13881

Females

4692

F45-49

4692

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2stories
+22ft-21ft

Overall

15564

Females

5569

F45-49

5569

Passing Analysis

Category:
Athletes Passed
2939
Passed By
636
Net Change
+2303
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17647
5K → 10K411244+167#17647#17480
10K → 15K43653+383#17480#17097
15K → 20K44531+414#17097#16683
20K → Half5613+43#16683#16640
Half → 25K38710+377#16640#16263
25K → 30K30472+232#16263#16031
30K → 20M14830+118#16031#15913
20M → 21M19020+170#15913#15743
21M → 35K789+69#15743#15674
35K → 23M17318+155#15674#15519
23M → 24M10814+94#15519#15425
24M → 40K8043+37#15425#15388
40K → 25.2M5610+46#15388#15342
25.2M → Finish6769-2#15342#15344
TOTALS2939636+2303
📊

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