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BOSTON MARATHON 2023

Jackie Kerns

Bib: 17913•F

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 34%
Gender (Female)
#0 / 11423
Top 15%
Division (F18-39)
#0 / 4884
Top 27%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:42/mi
23:54
↑ 97↓ 3451.5%
10K· 6.21 mi
7:40/mi
47:43
↑ 79↓ 1380.4%
15K· 9.32 mi
7:37/mi
1:11:23
↑ 67↓ 78
20K· 12.43 mi
7:43/mi
1:35:20
↑ 106↓ 860.1%
Half· 13.11 mi
7:31/mi
1:40:28
↑ 19↓ 370.5%
25K· 15.53 mi
7:34/mi
1:58:49
↑ 66↓ 880.2%
30K· 18.64 mi
7:31/mi
2:22:09
↑ 181↓ 1480.2%
20M
7:24/mi
2:32:13
↑ 64↓ 500.2%
21M
7:52/mi
2:40:05
↑ 106↓ 241.6%
35K· 21.75 mi
7:30/mi
2:45:42
↑ 17↓ 861.7%
23M
7:45/mi
2:55:24
↑ 23↓ 630.6%
24M
7:38/mi
3:03:02
↓ 821.3%
40K· 24.85 mi
7:41/mi
3:09:36
↓ 200.3%
25.2M
8:07/mi
3:12:24
↑ 13↓ 160.2%
Finish· 26.22 mi
7:13/mi
3:19:45
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:40:28
Pace7:40 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:39:17
Pace7:34 /mi
📊Negative Split: 1.2% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:2123:547:4223:54
7:42
-
10K
6.21 mi11:38:1047:437:4123:49
7:40
-0:02
15K
9.32 mi12:01:501:11:237:4023:40
7:37
-0:03
20K
12.43 mi12:25:471:35:207:4023:57
7:43
+0:06
Half
13.11 mi12:30:551:40:287:405:08
7:31
-0:12
25K
15.53 mi12:49:161:58:497:3918:21
7:34
+0:03
30K
18.64 mi13:12:362:22:097:3823:20
7:31
-0:03
20M
20.00 mi13:22:402:32:137:3710:04
7:24
-0:07
21M
21.00 mi13:30:322:40:057:377:52
7:52
+0:28
35K
21.75 mi13:36:092:45:427:375:37
7:30
-0:22
23M
23.00 mi13:45:512:55:247:389:42
7:45
+0:15
24M
24.00 mi13:53:293:03:027:387:38
7:38
-0:07
40K
24.85 mi14:00:033:09:367:386:34
7:41
+0:03
25.2M
25.20 mi14:02:513:12:247:382:48
8:07
+0:26
Finish
26.22 mi14:10:123:19:457:377:21
7:13
-0:54

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

7:13 /mi

Average Pace

7:37 /mi

Slowest Pace

8:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:16:57

99% of race

Time at Steady Pace

2:48

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:37 /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 mi11:14:2123:547:4223:54
7:42
#11379
10K
6.21 mi11:38:1047:437:4123:49
7:40
#11614
15K
9.32 mi12:01:501:11:237:4023:40
7:37
#11440
20K
12.43 mi12:25:471:35:207:4023:57
7:43
#11275
Half
13.11 mi12:30:551:40:287:405:08
7:31
#11223
25K
15.53 mi12:49:161:58:497:3918:21
7:34
#10890
30K
18.64 mi13:12:362:22:097:3823:20
7:31
#10175
20M
20.00 mi13:22:402:32:137:3710:04
7:24
#9825
21M
21.00 mi13:30:322:40:057:377:52
7:52
#9624
35K
21.75 mi13:36:092:45:427:375:37
7:30
#9562
23M
23.00 mi13:45:512:55:247:389:42
7:45
#9420
24M
24.00 mi13:53:293:03:027:387:38
7:38
#9358
40K
24.85 mi14:00:033:09:367:386:34
7:41
#9271
25.2M
25.20 mi14:02:513:12:247:382:48
8:07
#9230
Finish
26.22 mi14:10:123:19:457:377:21
7:13
#9122
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi113792522252211168(Top 42%)2436(Top 21%)2436(Top 50%)
10K6.21 mi3.10 mi11614-2352657-1352657-13511941(Top 45%)2828(Top 25%)2828(Top 58%)
15K9.32 mi3.11 mi11440+1742568+892568+8911168(Top 42%)2436(Top 21%)2436(Top 50%)
20K12.43 mi3.11 mi11275+1652484+842484+8410991(Top 41%)2395(Top 21%)2395(Top 49%)
Half13.11 mi0.68 mi11223+522455+292455+2910437(Top 39%)2092(Top 18%)2092(Top 43%)
25K15.53 mi2.42 mi10890+3332294+1612294+1619317(Top 35%)1689(Top 15%)1689(Top 35%)
30K18.64 mi3.11 mi10175+7151977+3171977+3177304(Top 27%)1042(Top 9%)1042(Top 21%)
20M20.00 mi1.36 mi9825+3501840+1371840+1376259(Top 24%)779(Top 7%)779(Top 16%)
21M21.00 mi1.00 mi9624+2011775+651775+656587(Top 25%)984(Top 9%)984(Top 20%)
35K21.75 mi0.75 mi9562+621769+61769+68612(Top 32%)1731(Top 15%)1731(Top 35%)
23M23.00 mi1.25 mi9420+1421736+331736+338075(Top 30%)1619(Top 14%)1619(Top 33%)
24M24.00 mi1.00 mi9358+621739-31739-38651(Top 32%)1938(Top 17%)1938(Top 40%)
40K24.85 mi0.85 mi9271+871733+61733+67868(Top 30%)1698(Top 15%)1698(Top 35%)
25.2M25.20 mi0.35 mi9230+411726+71726+77295(Top 27%)1539(Top 13%)1539(Top 32%)
Finish26.22 mi1.02 mi9122+1081698+281698+286554(Top 25%)1265(Top 11%)1265(Top 26%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21story building
+97ft-345ft

Overall

11168

Females

2436

F18-39

2436

5K→10K

3.1 - 6.2 mi

Top 45%
×5story building
+79ft-138ft

Overall

11941

Females

2828

F18-39

2828

10K→15K

6.2 - 9.3 mi

Top 42%
×3story building
+67ft-78ft

Overall

11168

Females

2436

F18-39

2436

15K→20K

9.3 - 12.4 mi

Top 41%
×5story building
+106ft-86ft

Overall

10991

Females

2395

F18-39

2395

20K→Half

12.4 - 13.1 mi

Top 39%
×2story building
+19ft-37ft

Overall

10437

Females

2092

F18-39

2092

Half→25K

13.1 - 15.5 mi

Top 35%
×4story building
+66ft-88ft

Overall

9317

Females

1689

F18-39

1689

25K→30K

15.5 - 18.6 mi

Top 27%
×9story building
+181ft-148ft

Overall

7304

Females

1042

F18-39

1042

30K→20M

18.6 - 20.0 mi

Top 24%
×5story building
+64ft-50ft

Overall

6259

Females

779

F18-39

779

20M→21M

20.0 - 21.0 mi

Top 25%
×8story building
+106ft-24ft

Overall

6587

Females

984

F18-39

984

21M→35K

21.0 - 21.8 mi

Top 32%
×7story building
+17ft-86ft

Overall

8612

Females

1731

F18-39

1731

35K→23M

21.8 - 23.0 mi

Top 30%
×5story building
+23ft-63ft

Overall

8075

Females

1619

F18-39

1619

23M→24M

23.0 - 24.0 mi

Top 32%
×6story building
+12ft-82ft

Overall

8651

Females

1938

F18-39

1938

24M→40K

24.0 - 24.9 mi

Top 30%
×1story
+6ft-20ft

Overall

7868

Females

1698

F18-39

1698

40K→25.2M

24.9 - 25.2 mi

Top 27%
×1story
+13ft-16ft

Overall

7295

Females

1539

F18-39

1539

25.2M→Finish

25.2 - 26.2 mi

Top 25%
×2story building
+22ft-21ft

Overall

6554

Females

1265

F18-39

1265

Passing Analysis

Category:
Athletes Passed
3033*
Passed By
776
Net Change
+2257
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11379
5K → 10K207442-235#11379#11614
10K → 15K286112+174#11614#11440
15K → 20K24681+165#11440#11275
20K → Half619+52#11275#11223
Half → 25K3385+333#11223#10890
25K → 30K716*1+715#10890#10175
30K → 20M351*1+350#10175#9825
20M → 21M21211+201#9825#9624
21M → 35K7715+62#9624#9562
35K → 23M15816+142#9562#9420
23M → 24M9937+62#9420#9358
24M → 40K11326+87#9358#9271
40K → 25.2M5211+41#9271#9230
25.2M → Finish1179+108#9230#9122
TOTALS3033*776+2257

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

📊

Passing Visuals

Category:
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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