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BOSTON MARATHON 2023

Jacinta Cox

Bib: 7495•F

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 10%
Gender (Female)
#0 / 11423
Top 1%
Division (F18-39)
#0 / 4884
Top 2%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:38
Rank: #6031
Start → 5K
21:38 | 6:58/mi
10K· 6.21 mi
43:05
Rank: #6077 (-46)
5K → 10K
21:27 | 6:54/mi
15K· 9.32 mi
1:04:34
Rank: #6052 (+25)
10K → 15K
21:29 | 6:55/mi
20K· 12.43 mi
1:26:01
Rank: #5836 (+216)
15K → 20K
21:27 | 6:54/mi
Half· 13.11 mi
1:30:37
Rank: #5800 (+36)
20K → Half
4:36 | 6:45/mi
25K· 15.53 mi
1:47:09
Rank: #5571 (+229)
Half → 25K
16:32 | 6:49/mi
30K· 18.64 mi
2:07:38
Rank: #4732 (+839)
25K → 30K
20:29 | 6:36/mi
20M
2:16:19
Rank: #4288 (+444)
30K → 20M
8:41 | 6:23/mi
21M
2:23:08
Rank: #4014 (+274)
20M → 21M
6:49 | 6:49/mi
35K· 21.75 mi
2:27:41
Rank: #3789 (+225)
21M → 35K
4:33 | 6:05/mi
23M
2:35:28
Rank: #3412 (+377)
35K → 23M
7:47 | 6:13/mi
24M
2:41:29
Rank: #3176 (+236)
23M → 24M
6:01 | 6:01/mi
40K· 24.85 mi
2:46:45
Rank: #2970 (+206)
24M → 40K
5:16 | 6:10/mi
25.2M
2:48:59
Rank: #2891 (+79)
40K → 25.2M
2:14 | 6:29/mi
Finish· 26.22 mi
2:55:12
Rank: #2746 (+145)
25.2M → Finish
6:13 | 6:06/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:30:37
Pace6:55 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:24:35
Pace6:27 /mi
📊Negative Split: 6.7% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:3521:386:5821:38
6:58
-
10K
6.21 mi10:47:0243:056:5621:27
6:54
-0:04
15K
9.32 mi11:08:311:04:346:5621:29
6:55
+0:01
20K
12.43 mi11:29:581:26:016:5521:27
6:54
-0:01
Half
13.11 mi11:34:341:30:376:554:36
6:45
-0:09
25K
15.53 mi11:51:061:47:096:5416:32
6:49
+0:04
30K
18.64 mi12:11:352:07:386:5120:29
6:36
-0:13
20M
20.00 mi12:20:162:16:196:498:41
6:23
-0:13
21M
21.00 mi12:27:052:23:086:496:49
6:49
+0:26
35K
21.75 mi12:31:382:27:416:474:33
6:05
-0:44
23M
23.00 mi12:39:252:35:286:467:47
6:13
+0:08
24M
24.00 mi12:45:262:41:296:446:01
6:01
-0:12
40K
24.85 mi12:50:422:46:456:435:16
6:10
+0:09
25.2M
25.20 mi12:52:562:48:596:422:14
6:29
+0:19
Finish
26.22 mi12:59:092:55:126:416:13
6:06
-0:23

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

6:01 /mi

Average Pace

6:41 /mi

Slowest Pace

6:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:01:14

35% of race

Time at Steady Pace

1:53:58

65% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:41 /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 mi10:25:3521:386:5821:38
6:58
#6031
10K
6.21 mi10:47:0243:056:5621:27
6:54
#6077
15K
9.32 mi11:08:311:04:346:5621:29
6:55
#6052
20K
12.43 mi11:29:581:26:016:5521:27
6:54
#5836
Half
13.11 mi11:34:341:30:376:554:36
6:45
#5800
25K
15.53 mi11:51:061:47:096:5416:32
6:49
#5571
30K
18.64 mi12:11:352:07:386:5120:29
6:36
#4732
20M
20.00 mi12:20:162:16:196:498:41
6:23
#4288
21M
21.00 mi12:27:052:23:086:496:49
6:49
#4014
35K
21.75 mi12:31:382:27:416:474:33
6:05
#3789
23M
23.00 mi12:39:252:35:286:467:47
6:13
#3412
24M
24.00 mi12:45:262:41:296:446:01
6:01
#3176
40K
24.85 mi12:50:422:46:456:435:16
6:10
#2970
25.2M
25.20 mi12:52:562:48:596:422:14
6:29
#2891
Finish
26.22 mi12:59:092:55:126:416:13
6:06
#2746
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi60315105106069(Top 23%)548(Top 5%)548(Top 11%)
10K6.21 mi3.10 mi6077-46522-12522-126171(Top 23%)568(Top 5%)568(Top 12%)
15K9.32 mi3.11 mi6052+25523-1523-16069(Top 23%)548(Top 5%)548(Top 11%)
20K12.43 mi3.11 mi5836+216474+49474+495392(Top 20%)407(Top 4%)407(Top 8%)
Half13.11 mi0.68 mi5800+36467+7467+74839(Top 18%)333(Top 3%)333(Top 7%)
25K15.53 mi2.42 mi5571+229429+38429+384338(Top 16%)282(Top 2%)282(Top 6%)
30K18.64 mi3.11 mi4732+839318+111318+1111936(Top 7%)83(Top 0.7%)83(Top 2%)
20M20.00 mi1.36 mi4288+444268+50268+501129(Top 4%)50(Top 0.4%)50(Top 1%)
21M21.00 mi1.00 mi4014+274241+27241+271482(Top 6%)68(Top 0.6%)68(Top 1%)
35K21.75 mi0.75 mi3789+225216+25216+25907(Top 3%)48(Top 0.4%)48(Top 1.0%)
23M23.00 mi1.25 mi3412+377181+35181+35659(Top 2%)38(Top 0.3%)38(Top 0.8%)
24M24.00 mi1.00 mi3176+236164+17164+17595(Top 2%)33(Top 0.3%)33(Top 0.7%)
40K24.85 mi0.85 mi2970+206150+14150+14610(Top 2%)35(Top 0.3%)35(Top 0.7%)
25.2M25.20 mi0.35 mi2891+79142+8142+8497(Top 2%)30(Top 0.3%)30(Top 0.6%)
Finish26.22 mi1.02 mi2746+145132+10132+101009(Top 4%)50(Top 0.4%)50(Top 1%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21stories
+97ft-345ft

Overall

6069

Females

548

F18-39

548

5K→10K

3.1 - 6.2 mi

Top 23%
×5stories
+79ft-138ft

Overall

6171

Females

568

F18-39

568

10K→15K

6.2 - 9.3 mi

Top 23%
×3stories
+67ft-78ft

Overall

6069

Females

548

F18-39

548

15K→20K

9.3 - 12.4 mi

Top 20%
×5stories
+106ft-86ft

Overall

5392

Females

407

F18-39

407

20K→Half

12.4 - 13.1 mi

Top 18%
×2stories
+19ft-37ft

Overall

4839

Females

333

F18-39

333

Half→25K

13.1 - 15.5 mi

Top 16%
×4stories
+66ft-88ft

Overall

4338

Females

282

F18-39

282

25K→30K

15.5 - 18.6 mi

Top 7%
×9stories
+181ft-148ft

Overall

1936

Females

83

F18-39

83

30K→20M

18.6 - 20.0 mi

Top 4%
×5stories
+64ft-50ft

Overall

1129

Females

50

F18-39

50

20M→21M

20.0 - 21.0 mi

Top 6%
×8stories
+106ft-24ft

Overall

1482

Females

68

F18-39

68

21M→35K

21.0 - 21.8 mi

Top 3%
×7stories
+17ft-86ft

Overall

907

Females

48

F18-39

48

35K→23M

21.8 - 23.0 mi

Top 2%
×5stories
+23ft-63ft

Overall

659

Females

38

F18-39

38

23M→24M

23.0 - 24.0 mi

Top 2%
×6stories
+12ft-82ft

Overall

595

Females

33

F18-39

33

24M→40K

24.0 - 24.9 mi

Top 2%
×1story
+6ft-20ft

Overall

610

Females

35

F18-39

35

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

497

Females

30

F18-39

30

25.2M→Finish

25.2 - 26.2 mi

Top 4%
×2stories
+22ft-21ft

Overall

1009

Females

50

F18-39

50

Passing Analysis

Category:
Athletes Passed
3630
Passed By
345
Net Change
+3285
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6031
5K → 10K158204-46#6031#6077
10K → 15K136111+25#6077#6052
15K → 20K23418+216#6052#5836
20K → Half415+36#5836#5800
Half → 25K2334+229#5800#5571
25K → 30K8390+839#5571#4732
30K → 20M4440+444#4732#4288
20M → 21M2751+274#4288#4014
21M → 35K2261+225#4014#3789
35K → 23M3770+377#3789#3412
23M → 24M2360+236#3412#3176
24M → 40K2060+206#3176#2970
40K → 25.2M801+79#2970#2891
25.2M → Finish1450+145#2891#2746
TOTALS3630345+3285
📊

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