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BOSTON MARATHON 2023

Caroline Mahoney

Bib: 8618•F

NH

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 27%
Gender (Female)
#0 / 11423
Top 9%
Division (F18-39)
#0 / 4884
Top 17%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:30
Rank: #10208
Start → 5K
23:30 | 7:34/mi
10K· 6.21 mi
46:56
Rank: #10501 (-293)
5K → 10K
23:26 | 7:33/mi
15K· 9.32 mi
1:10:00
Rank: #10156 (+345)
10K → 15K
23:04 | 7:25/mi
20K· 12.43 mi
1:32:58
Rank: #9656 (+500)
15K → 20K
22:58 | 7:24/mi
Half· 13.11 mi
1:38:02
Rank: #9643 (+13)
20K → Half
5:04 | 7:26/mi
25K· 15.53 mi
1:56:24
Rank: #9586 (+57)
Half → 25K
18:22 | 7:35/mi
30K· 18.64 mi
2:19:57
Rank: #9217 (+369)
25K → 30K
23:33 | 7:35/mi
20M
2:29:31
Rank: #8761 (+456)
30K → 20M
9:34 | 7:02/mi
21M
2:36:51
Rank: #8417 (+344)
20M → 21M
7:20 | 7:20/mi
35K· 21.75 mi
2:42:08
Rank: #8287 (+130)
21M → 35K
5:17 | 7:04/mi
23M
2:51:09
Rank: #8011 (+276)
35K → 23M
9:01 | 7:12/mi
24M
2:58:02
Rank: #7770 (+241)
23M → 24M
6:53 | 6:53/mi
40K· 24.85 mi
3:04:02
Rank: #7570 (+200)
24M → 40K
6:00 | 7:01/mi
25.2M
3:06:36
Rank: #7498 (+72)
40K → 25.2M
2:34 | 7:27/mi
Finish· 26.22 mi
3:13:21
Rank: #7265 (+233)
25.2M → Finish
6:45 | 6:37/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:38:02
Pace7:29 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:35:19
Pace7:16 /mi
📊Negative Split: 2.8% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:3923:307:3423:30
7:34
-
10K
6.21 mi11:12:0546:567:3323:26
7:33
-0:01
15K
9.32 mi11:35:091:10:007:3123:04
7:25
-0:08
20K
12.43 mi11:58:071:32:587:2922:58
7:24
-0:01
Half
13.11 mi12:03:111:38:027:295:04
7:26
+0:02
25K
15.53 mi12:21:331:56:247:3018:22
7:35
+0:09
30K
18.64 mi12:45:062:19:577:3023:33
7:35
0:00
20M
20.00 mi12:54:402:29:317:299:34
7:02
-0:33
21M
21.00 mi13:02:002:36:517:287:20
7:20
+0:18
35K
21.75 mi13:07:172:42:087:275:17
7:04
-0:16
23M
23.00 mi13:16:182:51:097:269:01
7:12
+0:08
24M
24.00 mi13:23:112:58:027:256:53
6:53
-0:19
40K
24.85 mi13:29:113:04:027:246:00
7:01
+0:08
25.2M
25.20 mi13:31:453:06:367:242:34
7:27
+0:26
Finish
26.22 mi13:38:303:13:217:236:45
6:37
-0:50

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

6:37 /mi

Average Pace

7:23 /mi

Slowest Pace

7:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

43:30

22% of race

Time at Steady Pace

2:29:51

78% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:22 /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 mi10:48:3923:307:3423:30
7:34
#10208
10K
6.21 mi11:12:0546:567:3323:26
7:33
#10501
15K
9.32 mi11:35:091:10:007:3123:04
7:25
#10156
20K
12.43 mi11:58:071:32:587:2922:58
7:24
#9656
Half
13.11 mi12:03:111:38:027:295:04
7:26
#9643
25K
15.53 mi12:21:331:56:247:3018:22
7:35
#9586
30K
18.64 mi12:45:062:19:577:3023:33
7:35
#9217
20M
20.00 mi12:54:402:29:317:299:34
7:02
#8761
21M
21.00 mi13:02:002:36:517:287:20
7:20
#8417
35K
21.75 mi13:07:172:42:087:275:17
7:04
#8287
23M
23.00 mi13:16:182:51:097:269:01
7:12
#8011
24M
24.00 mi13:23:112:58:027:256:53
6:53
#7770
40K
24.85 mi13:29:113:04:027:246:00
7:01
#7570
25.2M
25.20 mi13:31:453:06:367:242:34
7:27
#7498
Finish
26.22 mi13:38:303:13:217:236:45
6:37
#7265
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi10208195119519563(Top 36%)1644(Top 14%)1644(Top 34%)
10K6.21 mi3.10 mi10501-2932069-1182069-11810819(Top 41%)2209(Top 19%)2209(Top 45%)
15K9.32 mi3.11 mi10156+3451886+1831886+1839563(Top 36%)1644(Top 14%)1644(Top 34%)
20K12.43 mi3.11 mi9656+5001683+2031683+2038454(Top 32%)1276(Top 11%)1276(Top 26%)
Half13.11 mi0.68 mi9643+131679+41679+49634(Top 36%)1705(Top 15%)1705(Top 35%)
25K15.53 mi2.42 mi9586+571681-21681-29352(Top 35%)1701(Top 15%)1701(Top 35%)
30K18.64 mi3.11 mi9217+3691573+1081573+1087805(Top 29%)1220(Top 11%)1220(Top 25%)
20M20.00 mi1.36 mi8761+4561412+1611412+1614299(Top 16%)337(Top 3%)337(Top 7%)
21M21.00 mi1.00 mi8417+3441308+1041308+1043827(Top 14%)287(Top 3%)287(Top 6%)
35K21.75 mi0.75 mi8287+1301268+401268+405750(Top 22%)696(Top 6%)696(Top 14%)
23M23.00 mi1.25 mi8011+2761192+761192+764825(Top 18%)498(Top 4%)498(Top 10%)
24M24.00 mi1.00 mi7770+2411124+681124+684124(Top 15%)371(Top 3%)371(Top 8%)
40K24.85 mi0.85 mi7570+2001069+551069+553972(Top 15%)410(Top 4%)410(Top 8%)
25.2M25.20 mi0.35 mi7498+721057+121057+123715(Top 14%)393(Top 3%)393(Top 8%)
Finish26.22 mi1.02 mi7265+2331006+511006+513145(Top 12%)313(Top 3%)313(Top 6%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21stories
+97ft-345ft

Overall

9563

Females

1644

F18-39

1644

5K→10K

3.1 - 6.2 mi

Top 41%
×5stories
+79ft-138ft

Overall

10819

Females

2209

F18-39

2209

10K→15K

6.2 - 9.3 mi

Top 36%
×3stories
+67ft-78ft

Overall

9563

Females

1644

F18-39

1644

15K→20K

9.3 - 12.4 mi

Top 32%
×5stories
+106ft-86ft

Overall

8454

Females

1276

F18-39

1276

20K→Half

12.4 - 13.1 mi

Top 36%
×2stories
+19ft-37ft

Overall

9634

Females

1705

F18-39

1705

Half→25K

13.1 - 15.5 mi

Top 35%
×4stories
+66ft-88ft

Overall

9352

Females

1701

F18-39

1701

25K→30K

15.5 - 18.6 mi

Top 29%
×9stories
+181ft-148ft

Overall

7805

Females

1220

F18-39

1220

30K→20M

18.6 - 20.0 mi

Top 16%
×5stories
+64ft-50ft

Overall

4299

Females

337

F18-39

337

20M→21M

20.0 - 21.0 mi

Top 14%
×8stories
+106ft-24ft

Overall

3827

Females

287

F18-39

287

21M→35K

21.0 - 21.8 mi

Top 22%
×7stories
+17ft-86ft

Overall

5750

Females

696

F18-39

696

35K→23M

21.8 - 23.0 mi

Top 18%
×5stories
+23ft-63ft

Overall

4825

Females

498

F18-39

498

23M→24M

23.0 - 24.0 mi

Top 15%
×6stories
+12ft-82ft

Overall

4124

Females

371

F18-39

371

24M→40K

24.0 - 24.9 mi

Top 15%
×1story
+6ft-20ft

Overall

3972

Females

410

F18-39

410

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

3715

Females

393

F18-39

393

25.2M→Finish

25.2 - 26.2 mi

Top 12%
×2stories
+22ft-21ft

Overall

3145

Females

313

F18-39

313

Passing Analysis

Category:
Athletes Passed
3626*
Passed By
683
Net Change
+2943
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10208
5K → 10K168*461-293#10208#10501
10K → 15K41166+345#10501#10156
15K → 20K511*11+500#10156#9656
20K → Half2714+13#9656#9643
Half → 25K14689+57#9643#9586
25K → 30K396*27+369#9586#9217
30K → 20M4560+456#9217#8761
20M → 21M3440+344#8761#8417
21M → 35K1366+130#8417#8287
35K → 23M2782+276#8287#8011
23M → 24M2432+241#8011#7770
24M → 40K2011+200#7770#7570
40K → 25.2M742+72#7570#7498
25.2M → Finish2352+233#7498#7265
TOTALS3626*683+2943

* 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