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BOSTON MARATHON 2023

Kiarri Kershaw

IL

Bib: 19314 F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 33%
Gender (Female)
#0 / 11423
Top 14%
Masters (Masters Women)
#0 / 6539
Top 5%
Division (F40-44)
#0 / 1878
Top 12%
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
7:42/mi
23:56
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:34/mi
47:27
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:32/mi
1:10:51
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:34/mi
1:34:21
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:23/mi
1:39:23
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:34/mi
1:57:43
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
7:34/mi
2:21:15
↑ 181↓ 1480.2%
138 ft elev
20M
7:38/mi
2:31:37
↑ 64↓ 500.2%
148 ft elev
21M
8:01/mi
2:39:38
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:24/mi
2:45:10
↑ 17↓ 861.7%
156 ft elev
23M
7:45/mi
2:54:52
↑ 23↓ 630.6%
116 ft elev
24M
7:22/mi
3:02:14
↓ 821.3%
34 ft elev
40K· 24.85 mi
7:36/mi
3:08:44
↓ 200.3%
20 ft elev
25.2M
8:01/mi
3:11:30
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:24/mi
3:19:02
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:39:237:35 /mi⚖️ balanced
2nd Half
1:39:397:36 /mi⚖️ balanced
Even split — consistent pacing between halves
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Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
23:567:423.11 mi23:56
7:42
-
10K
47:277:383.10 mi23:31
7:34
-0:08
15K
1:10:517:363.11 mi23:24
7:32
-0:02
20K
1:34:217:363.11 mi23:30
7:34
+0:02
Half(13.11 mi)
1:39:237:350.68 mi5:02
7:23
-0:11
25K
1:57:437:352.42 mi18:20
7:34
+0:11
30K
2:21:157:353.11 mi23:32
7:34
0:00
20M
2:31:377:351.36 mi10:22
7:38
+0:04
21M
2:39:387:361.00 mi8:01
8:01
+0:23
35K
2:45:107:360.75 mi5:32
7:24
-0:37
23M
2:54:527:361.25 mi9:42
7:45
+0:21
24M
3:02:147:361.00 mi7:22
7:22
-0:23
40K
3:08:447:360.85 mi6:30
7:36
+0:14
25.2M
3:11:307:360.35 mi2:46
8:01
+0:25
Finish(26.22 mi)
3:19:027:361.02 mi7:32
7:24
-0:37
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

7:22 /mi

Average Pace

7:36 /mi

Slowest Pace

8:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

2:58:33

90% of race

Time at Steady Pace

20:29

10% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:35 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi11485258125811044120422042
10K3.10 mi11233+2522455+1262455+1261104623332333
15K3.11 mi10942+2912303+1522303+1521044120422042
20K3.11 mi10640+3022148+1552148+155981918291829
Half(13.11 mi)0.68 mi10548+922089+592089+59930415961596
25K2.42 mi10294+2541992+971992+97926116611661
30K3.11 mi9796+4981800+1921800+192777712131213
20M1.36 mi9606+1901755+451755+45770912971297
21M1.00 mi9447+1591712+431712+43748113121312
35K0.75 mi9357+901695+171695+17781614241424
23M1.25 mi9246+1111676+191676+19807116151615
24M1.00 mi9117+1291641+351641+35686912261226
40K0.85 mi9030+871620+211620+21737715161516
25.2M0.35 mi8974+561606+141606+14673713231323
Finish(26.22 mi)1.02 mi8900+741602+41602+4776417241724

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21story building
+97ft-345ft

Overall

10441

Females

2042

F40-44

2042

5K→10K

3.1 - 6.2 mi

Top 41%
×5story building
+79ft-138ft

Overall

11046

Females

2333

F40-44

2333

10K→15K

6.2 - 9.3 mi

Top 39%
×3story building
+67ft-78ft

Overall

10441

Females

2042

F40-44

2042

15K→20K

9.3 - 12.4 mi

Top 37%
×5story building
+106ft-86ft

Overall

9819

Females

1829

F40-44

1829

20K→Half

12.4 - 13.1 mi

Top 35%
×2story building
+19ft-37ft

Overall

9304

Females

1596

F40-44

1596

Half→25K

13.1 - 15.5 mi

Top 35%
×4story building
+66ft-88ft

Overall

9261

Females

1661

F40-44

1661

25K→30K

15.5 - 18.6 mi

Top 29%
×9story building
+181ft-148ft

Overall

7777

Females

1213

F40-44

1213

30K→20M

18.6 - 20.0 mi

Top 29%
×5story building
+64ft-50ft

Overall

7709

Females

1297

F40-44

1297

20M→21M

20.0 - 21.0 mi

Top 28%
×8story building
+106ft-24ft

Overall

7481

Females

1312

F40-44

1312

21M→35K

21.0 - 21.8 mi

Top 29%
×7story building
+17ft-86ft

Overall

7816

Females

1424

F40-44

1424

35K→23M

21.8 - 23.0 mi

Top 30%
×5story building
+23ft-63ft

Overall

8071

Females

1615

F40-44

1615

23M→24M

23.0 - 24.0 mi

Top 26%
×6story building
+12ft-82ft

Overall

6869

Females

1226

F40-44

1226

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7377

Females

1516

F40-44

1516

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

6737

Females

1323

F40-44

1323

25.2M→Finish

25.2 - 26.2 mi

Top 29%
×2story building
+22ft-21ft

Overall

7764

Females

1724

F40-44

1724

Passing Analysis

Category:
Passed
3009*
Passed By
424
Net Change
+2585
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11485
5K → 10K429177+252#11485#11233
10K → 15K36069+291#11233#10942
15K → 20K34543+302#10942#10640
20K → Half953+92#10640#10548
Half → 25K27622+254#10548#10294
25K → 30K504*6+498#10294#9796
30K → 20M20010+190#9796#9606
20M → 21M16910+159#9606#9447
21M → 35K10111+90#9447#9357
35K → 23M13726+111#9357#9246
23M → 24M1345+129#9246#9117
24M → 40K9710+87#9117#9030
40K → 25.2M648+56#9030#8974
25.2M → Finish9824+74#8974#8900
TOTALS3009*424+2585

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

Passing Charts

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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