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BOSTON MARATHON 2023

Caroline Jennings

Bib: 13630•F

TX

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0:00
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Overall
#0 / 26622
Top 36%
Gender (Female)
#0 / 11423
Top 17%
Division (F18-39)
#0 / 4884
Top 30%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:41
Rank: #10754
Start → 5K
23:41 | 7:37/mi
10K· 6.21 mi
47:02
Rank: #10642 (+112)
5K → 10K
23:21 | 7:31/mi
15K· 9.32 mi
1:10:03
Rank: #10203 (+439)
10K → 15K
23:01 | 7:25/mi
20K· 12.43 mi
1:33:02
Rank: #9703 (+500)
15K → 20K
22:59 | 7:24/mi
Half· 13.11 mi
1:38:08
Rank: #9719 (-16)
20K → Half
5:06 | 7:29/mi
25K· 15.53 mi
1:56:27
Rank: #9621 (+98)
Half → 25K
18:19 | 7:33/mi
30K· 18.64 mi
2:20:31
Rank: #9469 (+152)
25K → 30K
24:04 | 7:45/mi
20M
2:31:09
Rank: #9424 (+45)
30K → 20M
10:38 | 7:49/mi
21M
2:39:18
Rank: #9314 (+110)
20M → 21M
8:09 | 8:09/mi
35K· 21.75 mi
2:44:58
Rank: #9286 (+28)
21M → 35K
5:40 | 7:34/mi
23M
2:54:51
Rank: #9243 (+43)
35K → 23M
9:53 | 7:54/mi
24M
3:02:41
Rank: #9238 (+5)
23M → 24M
7:50 | 7:50/mi
40K· 24.85 mi
3:09:40
Rank: #9300 (-62)
24M → 40K
6:59 | 8:10/mi
25.2M
3:12:42
Rank: #9333 (-33)
40K → 25.2M
3:02 | 8:48/mi
Finish· 26.22 mi
3:21:21
Rank: #9547 (-214)
25.2M → Finish
8:39 | 8:29/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:08
Pace7:29 /mi
2nd Half
Distance13.11 mi
Time1:43:13
Pace7:52 /mi
📊Positive Split: 5.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:0223:417:3723:41
7:37
-
10K
6.21 mi11:15:2347:027:3423:21
7:31
-0:06
15K
9.32 mi11:38:241:10:037:3123:01
7:25
-0:06
20K
12.43 mi12:01:231:33:027:2922:59
7:24
-0:01
Half
13.11 mi12:06:291:38:087:295:06
7:29
+0:05
25K
15.53 mi12:24:481:56:277:3018:19
7:33
+0:04
30K
18.64 mi12:48:522:20:317:3224:04
7:45
+0:12
20M
20.00 mi12:59:302:31:097:3310:38
7:49
+0:04
21M
21.00 mi13:07:392:39:187:358:09
8:09
+0:20
35K
21.75 mi13:13:192:44:587:355:40
7:34
-0:35
23M
23.00 mi13:23:122:54:517:369:53
7:54
+0:20
24M
24.00 mi13:31:023:02:417:377:50
7:50
-0:04
40K
24.85 mi13:38:013:09:407:386:59
8:10
+0:20
25.2M
25.20 mi13:41:033:12:427:393:02
8:48
+0:38
Finish
26.22 mi13:49:423:21:217:418:39
8:29
-0:19

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

7:24 /mi

Average Pace

7:41 /mi

Slowest Pace

8:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:54:32

87% of race

Time at Steady Pace

23:47

12% of race

Time at Slower Pace

3:02

2% of race

Average Pace: 7:41 /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 mi10:52:0223:417:3723:41
7:37
#10754
10K
6.21 mi11:15:2347:027:3423:21
7:31
#10642
15K
9.32 mi11:38:241:10:037:3123:01
7:25
#10203
20K
12.43 mi12:01:231:33:027:2922:59
7:24
#9703
Half
13.11 mi12:06:291:38:087:295:06
7:29
#9719
25K
15.53 mi12:24:481:56:277:3018:19
7:33
#9621
30K
18.64 mi12:48:522:20:317:3224:04
7:45
#9469
20M
20.00 mi12:59:302:31:097:3310:38
7:49
#9424
21M
21.00 mi13:07:392:39:187:358:09
8:09
#9314
35K
21.75 mi13:13:192:44:587:355:40
7:34
#9286
23M
23.00 mi13:23:122:54:517:369:53
7:54
#9243
24M
24.00 mi13:31:023:02:417:377:50
7:50
#9238
40K
24.85 mi13:38:013:09:407:386:59
8:10
#9300
25.2M
25.20 mi13:41:033:12:427:393:02
8:48
#9333
Finish
26.22 mi13:49:423:21:217:418:39
8:29
#9547
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi10754220222029427(Top 35%)1594(Top 14%)1594(Top 33%)
10K6.21 mi3.10 mi10642+1122140+622140+6210577(Top 40%)2092(Top 18%)2092(Top 43%)
15K9.32 mi3.11 mi10203+4391911+2291911+2299427(Top 35%)1594(Top 14%)1594(Top 33%)
20K12.43 mi3.11 mi9703+5001705+2061705+2068512(Top 32%)1304(Top 11%)1304(Top 27%)
Half13.11 mi0.68 mi9719-161718-131718-1310086(Top 38%)1922(Top 17%)1922(Top 39%)
25K15.53 mi2.42 mi9621+981696+221696+229217(Top 35%)1643(Top 14%)1643(Top 34%)
30K18.64 mi3.11 mi9469+1521675+211675+218983(Top 34%)1702(Top 15%)1702(Top 35%)
20M20.00 mi1.36 mi9424+451679-41679-49090(Top 34%)1830(Top 16%)1830(Top 37%)
21M21.00 mi1.00 mi9314+1101660+191660+198335(Top 31%)1661(Top 15%)1661(Top 34%)
35K21.75 mi0.75 mi9286+281664-41664-49125(Top 34%)1975(Top 17%)1975(Top 40%)
23M23.00 mi1.25 mi9243+431674-101674-109057(Top 34%)2059(Top 18%)2059(Top 42%)
24M24.00 mi1.00 mi9238+51693-191693-1910046(Top 38%)2615(Top 23%)2615(Top 54%)
40K24.85 mi0.85 mi9300-621746-531746-5311149(Top 42%)3219(Top 28%)3219(Top 66%)
25.2M25.20 mi0.35 mi9333-331770-241770-2411335(Top 43%)3347(Top 29%)3347(Top 69%)
Finish26.22 mi1.02 mi9547-2141888-1181888-11815350(Top 58%)5443(Top 48%)5443(Top 111%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21stories
+97ft-345ft

Overall

9427

Females

1594

F18-39

1594

5K→10K

3.1 - 6.2 mi

Top 40%
×5stories
+79ft-138ft

Overall

10577

Females

2092

F18-39

2092

10K→15K

6.2 - 9.3 mi

Top 35%
×3stories
+67ft-78ft

Overall

9427

Females

1594

F18-39

1594

15K→20K

9.3 - 12.4 mi

Top 32%
×5stories
+106ft-86ft

Overall

8512

Females

1304

F18-39

1304

20K→Half

12.4 - 13.1 mi

Top 38%
×2stories
+19ft-37ft

Overall

10086

Females

1922

F18-39

1922

Half→25K

13.1 - 15.5 mi

Top 35%
×4stories
+66ft-88ft

Overall

9217

Females

1643

F18-39

1643

25K→30K

15.5 - 18.6 mi

Top 34%
×9stories
+181ft-148ft

Overall

8983

Females

1702

F18-39

1702

30K→20M

18.6 - 20.0 mi

Top 34%
×5stories
+64ft-50ft

Overall

9090

Females

1830

F18-39

1830

20M→21M

20.0 - 21.0 mi

Top 31%
×8stories
+106ft-24ft

Overall

8335

Females

1661

F18-39

1661

21M→35K

21.0 - 21.8 mi

Top 34%
×7stories
+17ft-86ft

Overall

9125

Females

1975

F18-39

1975

35K→23M

21.8 - 23.0 mi

Top 34%
×5stories
+23ft-63ft

Overall

9057

Females

2059

F18-39

2059

23M→24M

23.0 - 24.0 mi

Top 38%
×6stories
+12ft-82ft

Overall

10046

Females

2615

F18-39

2615

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

11149

Females

3219

F18-39

3219

40K→25.2M

24.9 - 25.2 mi

Top 43%
×1story
+13ft-16ft

Overall

11335

Females

3347

F18-39

3347

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2stories
+22ft-21ft

Overall

15350

Females

5443

F18-39

5443

Passing Analysis

Category:
Athletes Passed
2325*
Passed By
1118
Net Change
+1207
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10754
5K → 10K349237+112#10754#10642
10K → 15K48647+439#10642#10203
15K → 20K512*12+500#10203#9703
20K → Half1935-16#9703#9719
Half → 25K16870+98#9719#9621
25K → 30K240*88+152#9621#9469
30K → 20M10459+45#9469#9424
20M → 21M14333+110#9424#9314
21M → 35K5628+28#9314#9286
35K → 23M10259+43#9286#9243
23M → 24M6257+5#9243#9238
24M → 40K49111-62#9238#9300
40K → 25.2M1952-33#9300#9333
25.2M → Finish16230-214#9333#9547
TOTALS2325*1118+1207

* 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