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BOSTON MARATHON 2023

Carolyn Jerns

Bib: 22761•F

OR

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F50-54)
#0 / 1207
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:45
Rank: #21393
Start → 5K
28:45 | 9:15/mi
10K· 6.21 mi
54:34
Rank: #19592 (+1801)
5K → 10K
25:49 | 8:19/mi
15K· 9.32 mi
1:20:41
Rank: #18797 (+795)
10K → 15K
26:07 | 8:24/mi
20K· 12.43 mi
1:47:44
Rank: #18633 (+164)
15K → 20K
27:03 | 8:42/mi
Half· 13.11 mi
1:53:37
Rank: #18623 (+10)
20K → Half
5:53 | 8:37/mi
25K· 15.53 mi
2:15:34
Rank: #18724 (-101)
Half → 25K
21:57 | 9:03/mi
30K· 18.64 mi
2:45:39
Rank: #19039 (-315)
25K → 30K
30:05 | 9:41/mi
20M
2:59:21
Rank: #19210 (-171)
30K → 20M
13:42 | 10:05/mi
21M
3:10:48
Rank: #19450 (-240)
20M → 21M
11:27 | 11:27/mi
35K· 21.75 mi
3:18:08
Rank: #19519 (-69)
21M → 35K
7:20 | 9:48/mi
23M
3:31:33
Rank: #19729 (-210)
35K → 23M
13:25 | 10:43/mi
24M
3:42:00
Rank: #19869 (-140)
23M → 24M
10:27 | 10:27/mi
40K· 24.85 mi
3:51:09
Rank: #19984 (-115)
24M → 40K
9:09 | 10:42/mi
25.2M
3:55:10
Rank: #20020 (-36)
40K → 25.2M
4:01 | 11:39/mi
Finish· 26.22 mi
4:05:44
Rank: #20115 (-95)
25.2M → Finish
10:34 | 10:22/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:37
Pace8:40 /mi
2nd Half
Distance13.11 mi
Time2:12:07
Pace10:05 /mi
📊Positive Split: 16.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:5228:459:1528:45
9:15
-
10K
6.21 mi11:48:4154:348:4725:49
8:19
-0:56
15K
9.32 mi12:14:481:20:418:3926:07
8:24
+0:05
20K
12.43 mi12:41:511:47:448:4027:03
8:42
+0:18
Half
13.11 mi12:47:441:53:378:405:53
8:37
-0:05
25K
15.53 mi13:09:412:15:348:4421:57
9:03
+0:26
30K
18.64 mi13:39:462:45:398:5330:05
9:41
+0:38
20M
20.00 mi13:53:282:59:218:5813:42
10:05
+0:24
21M
21.00 mi14:04:553:10:489:0511:27
11:27
+1:22
35K
21.75 mi14:12:153:18:089:077:20
9:48
-1:39
23M
23.00 mi14:25:403:31:339:1213:25
10:43
+0:55
24M
24.00 mi14:36:073:42:009:1510:27
10:27
-0:16
40K
24.85 mi14:45:163:51:099:189:09
10:42
+0:15
25.2M
25.20 mi14:49:173:55:109:204:01
11:39
+0:57
Finish
26.22 mi14:59:514:05:449:2310:34
10:22
-1:17

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

8:19 /mi

Average Pace

9:23 /mi

Slowest Pace

11:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:15:34

55% of race

Time at Steady Pace

51:07

21% of race

Time at Slower Pace

59:03

24% of race

Average Pace: 9:22 /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 mi11:22:5228:459:1528:45
9:15
#21393
10K
6.21 mi11:48:4154:348:4725:49
8:19
#19592
15K
9.32 mi12:14:481:20:418:3926:07
8:24
#18797
20K
12.43 mi12:41:511:47:448:4027:03
8:42
#18633
Half
13.11 mi12:47:441:53:378:405:53
8:37
#18623
25K
15.53 mi13:09:412:15:348:4421:57
9:03
#18724
30K
18.64 mi13:39:462:45:398:5330:05
9:41
#19039
20M
20.00 mi13:53:282:59:218:5813:42
10:05
#19210
21M
21.00 mi14:04:553:10:489:0511:27
11:27
#19450
35K
21.75 mi14:12:153:18:089:077:20
9:48
#19519
23M
23.00 mi14:25:403:31:339:1213:25
10:43
#19729
24M
24.00 mi14:36:073:42:009:1510:27
10:27
#19869
40K
24.85 mi14:45:163:51:099:189:09
10:42
#19984
25.2M
25.20 mi14:49:173:55:109:204:01
11:39
#20020
Finish
26.22 mi14:59:514:05:449:2310:34
10:22
#20115
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi213938574857417202(Top 65%)6052(Top 53%)6052(Top 501%)
10K6.21 mi3.10 mi19592+18017527+10477527+104717017(Top 64%)5887(Top 52%)5887(Top 488%)
15K9.32 mi3.11 mi18797+7957004+5237004+52317202(Top 65%)6052(Top 53%)6052(Top 501%)
20K12.43 mi3.11 mi18633+1646892+1126892+11218180(Top 68%)6611(Top 58%)6611(Top 548%)
Half13.11 mi0.68 mi18623+106884+86884+818530(Top 70%)6807(Top 60%)6807(Top 564%)
25K15.53 mi2.42 mi18724-1016965-816965-8119227(Top 72%)7265(Top 64%)7265(Top 602%)
30K18.64 mi3.11 mi19039-3157158-1937158-19320092(Top 75%)7821(Top 68%)7821(Top 648%)
20M20.00 mi1.36 mi19210-1717272-1147272-11420705(Top 78%)8253(Top 72%)8253(Top 684%)
21M21.00 mi1.00 mi19450-2407434-1627434-16221799(Top 82%)8885(Top 78%)8885(Top 736%)
35K21.75 mi0.75 mi19519-697474-407474-4020776(Top 78%)8376(Top 73%)8376(Top 694%)
23M23.00 mi1.25 mi19729-2107605-1317605-13121796(Top 82%)8962(Top 78%)8962(Top 743%)
24M24.00 mi1.00 mi19869-1407695-907695-9021923(Top 82%)9059(Top 79%)9059(Top 751%)
40K24.85 mi0.85 mi19984-1157779-847779-8421713(Top 82%)8993(Top 79%)8993(Top 745%)
25.2M25.20 mi0.35 mi20020-367803-247803-2421867(Top 82%)9051(Top 79%)9051(Top 750%)
Finish26.22 mi1.02 mi20115-957869-667869-6622731(Top 85%)9516(Top 83%)9516(Top 788%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21stories
+97ft-345ft

Overall

17202

Females

6052

F50-54

6052

5K→10K

3.1 - 6.2 mi

Top 64%
×5stories
+79ft-138ft

Overall

17017

Females

5887

F50-54

5887

10K→15K

6.2 - 9.3 mi

Top 65%
×3stories
+67ft-78ft

Overall

17202

Females

6052

F50-54

6052

15K→20K

9.3 - 12.4 mi

Top 68%
×5stories
+106ft-86ft

Overall

18180

Females

6611

F50-54

6611

20K→Half

12.4 - 13.1 mi

Top 70%
×2stories
+19ft-37ft

Overall

18530

Females

6807

F50-54

6807

Half→25K

13.1 - 15.5 mi

Top 72%
×4stories
+66ft-88ft

Overall

19227

Females

7265

F50-54

7265

25K→30K

15.5 - 18.6 mi

Top 75%
×9stories
+181ft-148ft

Overall

20092

Females

7821

F50-54

7821

30K→20M

18.6 - 20.0 mi

Top 78%
×5stories
+64ft-50ft

Overall

20705

Females

8253

F50-54

8253

20M→21M

20.0 - 21.0 mi

Top 82%
×8stories
+106ft-24ft

Overall

21799

Females

8885

F50-54

8885

21M→35K

21.0 - 21.8 mi

Top 78%
×7stories
+17ft-86ft

Overall

20776

Females

8376

F50-54

8376

35K→23M

21.8 - 23.0 mi

Top 82%
×5stories
+23ft-63ft

Overall

21796

Females

8962

F50-54

8962

23M→24M

23.0 - 24.0 mi

Top 82%
×6stories
+12ft-82ft

Overall

21923

Females

9059

F50-54

9059

24M→40K

24.0 - 24.9 mi

Top 82%
×1story
+6ft-20ft

Overall

21713

Females

8993

F50-54

8993

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

21867

Females

9051

F50-54

9051

25.2M→Finish

25.2 - 26.2 mi

Top 85%
×2stories
+22ft-21ft

Overall

22731

Females

9516

F50-54

9516

Passing Analysis

Category:
Athletes Passed
3279
Passed By
2001
Net Change
+1278
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21393
5K → 10K181110+1801#21393#19592
10K → 15K81621+795#19592#18797
15K → 20K24480+164#18797#18633
20K → Half3626+10#18633#18623
Half → 25K87188-101#18623#18724
25K → 30K93408-315#18724#19039
30K → 20M42213-171#19039#19210
20M → 21M30270-240#19210#19450
21M → 35K2493-69#19450#19519
35K → 23M30240-210#19519#19729
23M → 24M19159-140#19729#19869
24M → 40K25140-115#19869#19984
40K → 25.2M743-36#19984#20020
25.2M → Finish15110-95#20020#20115
TOTALS32792001+1278
📊

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