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BOSTON MARATHON 2023

Katie Cronin

Bib: 9895•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 41%
Gender (Female)
#0 / 11423
Top 22%
Division (F18-39)
#0 / 4884
Top 38%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:25
Rank: #9979
Start → 5K
23:25 | 7:32/mi
10K· 6.21 mi
47:00
Rank: #10594 (-615)
5K → 10K
23:35 | 7:35/mi
15K· 9.32 mi
1:10:13
Rank: #10371 (+223)
10K → 15K
23:13 | 7:28/mi
20K· 12.43 mi
1:33:28
Rank: #10023 (+348)
15K → 20K
23:15 | 7:29/mi
Half· 13.11 mi
1:38:36
Rank: #10024 (-1)
20K → Half
5:08 | 7:31/mi
25K· 15.53 mi
1:57:08
Rank: #9984 (+40)
Half → 25K
18:32 | 7:39/mi
30K· 18.64 mi
2:21:59
Rank: #10107 (-123)
25K → 30K
24:51 | 8:00/mi
20M
2:33:02
Rank: #10176 (-69)
30K → 20M
11:03 | 8:08/mi
21M
2:41:46
Rank: #10244 (-68)
20M → 21M
8:44 | 8:44/mi
35K· 21.75 mi
2:47:49
Rank: #10330 (-86)
21M → 35K
6:03 | 8:05/mi
23M
2:58:15
Rank: #10401 (-71)
35K → 23M
10:26 | 8:20/mi
24M
3:06:41
Rank: #10574 (-173)
23M → 24M
8:26 | 8:26/mi
40K· 24.85 mi
3:14:19
Rank: #10784 (-210)
24M → 40K
7:38 | 8:56/mi
25.2M
3:17:25
Rank: #10801 (-17)
40K → 25.2M
3:06 | 8:59/mi
Finish· 26.22 mi
3:25:48
Rank: #10917 (-116)
25.2M → Finish
8:23 | 8:14/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:36
Pace7:31 /mi
2nd Half
Distance13.11 mi
Time1:47:12
Pace8:11 /mi
📊Positive Split: 8.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:58:2323:257:3223:25
7:32
-
10K
6.21 mi11:21:5847:007:3423:35
7:35
+0:03
15K
9.32 mi11:45:111:10:137:3223:13
7:28
-0:07
20K
12.43 mi12:08:261:33:287:3123:15
7:29
+0:01
Half
13.11 mi12:13:341:38:367:315:08
7:31
+0:02
25K
15.53 mi12:32:061:57:087:3218:32
7:39
+0:08
30K
18.64 mi12:56:572:21:597:3724:51
8:00
+0:21
20M
20.00 mi13:08:002:33:027:3911:03
8:08
+0:08
21M
21.00 mi13:16:442:41:467:428:44
8:44
+0:36
35K
21.75 mi13:22:472:47:497:436:03
8:05
-0:39
23M
23.00 mi13:33:132:58:157:4510:26
8:20
+0:15
24M
24.00 mi13:41:393:06:417:478:26
8:26
+0:06
40K
24.85 mi13:49:173:14:197:497:38
8:56
+0:30
25.2M
25.20 mi13:52:233:17:257:503:06
8:59
+0:03
Finish
26.22 mi14:00:463:25:487:518:23
8:14
-0:45

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

7:28 /mi

Average Pace

7:51 /mi

Slowest Pace

8:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:57:08

57% of race

Time at Steady Pace

1:00:46

30% of race

Time at Slower Pace

27:54

14% of race

Average Pace: 7:51 /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 mi10:58:2323:257:3223:25
7:32
#9979
10K
6.21 mi11:21:5847:007:3423:35
7:35
#10594
15K
9.32 mi11:45:111:10:137:3223:13
7:28
#10371
20K
12.43 mi12:08:261:33:287:3123:15
7:29
#10023
Half
13.11 mi12:13:341:38:367:315:08
7:31
#10024
25K
15.53 mi12:32:061:57:087:3218:32
7:39
#9984
30K
18.64 mi12:56:572:21:597:3724:51
8:00
#10107
20M
20.00 mi13:08:002:33:027:3911:03
8:08
#10176
21M
21.00 mi13:16:442:41:467:428:44
8:44
#10244
35K
21.75 mi13:22:472:47:497:436:03
8:05
#10330
23M
23.00 mi13:33:132:58:157:4510:26
8:20
#10401
24M
24.00 mi13:41:393:06:417:478:26
8:26
#10574
40K
24.85 mi13:49:173:14:197:497:38
8:56
#10784
25.2M
25.20 mi13:52:233:17:257:503:06
8:59
#10801
Finish
26.22 mi14:00:463:25:487:518:23
8:14
#10917
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi9979185418549971(Top 37%)1831(Top 16%)1831(Top 37%)
10K6.21 mi3.10 mi10594-6152117-2632117-26311258(Top 42%)2470(Top 22%)2470(Top 51%)
15K9.32 mi3.11 mi10371+2231998+1191998+1199971(Top 37%)1831(Top 16%)1831(Top 37%)
20K12.43 mi3.11 mi10023+3481838+1601838+1609204(Top 35%)1565(Top 14%)1565(Top 32%)
Half13.11 mi0.68 mi10024-11847-91847-910486(Top 39%)2141(Top 19%)2141(Top 44%)
25K15.53 mi2.42 mi9984+401848-11848-19890(Top 37%)1959(Top 17%)1959(Top 40%)
30K18.64 mi3.11 mi10107-1231942-941942-9410915(Top 41%)2592(Top 23%)2592(Top 53%)
20M20.00 mi1.36 mi10176-692015-732015-7311248(Top 42%)2844(Top 25%)2844(Top 58%)
21M21.00 mi1.00 mi10244-682068-532068-5311886(Top 45%)3333(Top 29%)3333(Top 68%)
35K21.75 mi0.75 mi10330-862127-592127-5912719(Top 48%)3826(Top 33%)3826(Top 78%)
23M23.00 mi1.25 mi10401-712198-712198-7112132(Top 46%)3582(Top 31%)3582(Top 73%)
24M24.00 mi1.00 mi10574-1732318-1202318-12014077(Top 53%)4704(Top 41%)4704(Top 96%)
40K24.85 mi0.85 mi10784-2102439-1212439-12115759(Top 59%)5703(Top 50%)5703(Top 117%)
25.2M25.20 mi0.35 mi10801-172465-262465-2612484(Top 47%)3943(Top 35%)3943(Top 81%)
Finish26.22 mi1.02 mi10917-1162551-862551-8613624(Top 51%)4530(Top 40%)4530(Top 93%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 37%
×21stories
+97ft-345ft

Overall

9971

Females

1831

F18-39

1831

5K→10K

3.1 - 6.2 mi

Top 42%
×5stories
+79ft-138ft

Overall

11258

Females

2470

F18-39

2470

10K→15K

6.2 - 9.3 mi

Top 37%
×3stories
+67ft-78ft

Overall

9971

Females

1831

F18-39

1831

15K→20K

9.3 - 12.4 mi

Top 35%
×5stories
+106ft-86ft

Overall

9204

Females

1565

F18-39

1565

20K→Half

12.4 - 13.1 mi

Top 39%
×2stories
+19ft-37ft

Overall

10486

Females

2141

F18-39

2141

Half→25K

13.1 - 15.5 mi

Top 37%
×4stories
+66ft-88ft

Overall

9890

Females

1959

F18-39

1959

25K→30K

15.5 - 18.6 mi

Top 41%
×9stories
+181ft-148ft

Overall

10915

Females

2592

F18-39

2592

30K→20M

18.6 - 20.0 mi

Top 42%
×5stories
+64ft-50ft

Overall

11248

Females

2844

F18-39

2844

20M→21M

20.0 - 21.0 mi

Top 45%
×8stories
+106ft-24ft

Overall

11886

Females

3333

F18-39

3333

21M→35K

21.0 - 21.8 mi

Top 48%
×7stories
+17ft-86ft

Overall

12719

Females

3826

F18-39

3826

35K→23M

21.8 - 23.0 mi

Top 46%
×5stories
+23ft-63ft

Overall

12132

Females

3582

F18-39

3582

23M→24M

23.0 - 24.0 mi

Top 53%
×6stories
+12ft-82ft

Overall

14077

Females

4704

F18-39

4704

24M→40K

24.0 - 24.9 mi

Top 59%
×1story
+6ft-20ft

Overall

15759

Females

5703

F18-39

5703

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

12484

Females

3943

F18-39

3943

25.2M→Finish

25.2 - 26.2 mi

Top 51%
×2stories
+22ft-21ft

Overall

13624

Females

4530

F18-39

4530

Passing Analysis

Category:
Athletes Passed
1403*
Passed By
2340
Net Change
-938
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9979
5K → 10K89703-615#9979#10594
10K → 15K324101+223#10594#10371
15K → 20K382*34+348#10371#10023
20K → Half2728-1#10023#10024
Half → 25K136*96+40#10024#9984
25K → 30K111234-123#9984#10107
30K → 20M63132-69#10107#10176
20M → 21M66134-68#10176#10244
21M → 35K25111-86#10244#10330
35K → 23M65136-71#10330#10401
23M → 24M28201-173#10401#10574
24M → 40K26236-210#10574#10784
40K → 25.2M2441-17#10784#10801
25.2M → Finish37153-116#10801#10917
TOTALS1403*2340-938

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

📊

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