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BOSTON MARATHON 2023

Kelsey Hackney

Bib: 15423•F

KY

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 39%
Gender (Female)
#0 / 11423
Top 20%
Division (F18-39)
#0 / 4884
Top 35%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:12
Rank: #12259
Start → 5K
24:12 | 7:47/mi
10K· 6.21 mi
48:18
Rank: #12481 (-222)
5K → 10K
24:06 | 7:45/mi
15K· 9.32 mi
1:12:21
Rank: #12334 (+147)
10K → 15K
24:03 | 7:44/mi
20K· 12.43 mi
1:36:31
Rank: #12091 (+243)
15K → 20K
24:10 | 7:47/mi
Half· 13.11 mi
1:41:48
Rank: #12099 (-8)
20K → Half
5:17 | 7:45/mi
25K· 15.53 mi
2:00:32
Rank: #11800 (+299)
Half → 25K
18:44 | 7:44/mi
30K· 18.64 mi
2:24:38
Rank: #11242 (+558)
25K → 30K
24:06 | 7:45/mi
20M
2:35:11
Rank: #11014 (+228)
30K → 20M
10:33 | 7:46/mi
21M
2:43:26
Rank: #10869 (+145)
20M → 21M
8:15 | 8:15/mi
35K· 21.75 mi
2:48:56
Rank: #10720 (+149)
21M → 35K
5:30 | 7:21/mi
23M
2:58:39
Rank: #10548 (+172)
35K → 23M
9:43 | 7:46/mi
24M
3:06:14
Rank: #10423 (+125)
23M → 24M
7:35 | 7:35/mi
40K· 24.85 mi
3:12:50
Rank: #10303 (+120)
24M → 40K
6:36 | 7:43/mi
25.2M
3:15:45
Rank: #10273 (+30)
40K → 25.2M
2:55 | 8:27/mi
Finish· 26.22 mi
3:23:54
Rank: #10322 (-49)
25.2M → Finish
8:09 | 8:00/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:41:48
Pace7:46 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:42:06
Pace7:47 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:1324:127:4724:12
7:47
-
10K
6.21 mi11:19:1948:187:4624:06
7:45
-0:02
15K
9.32 mi11:43:221:12:217:4624:03
7:44
-0:01
20K
12.43 mi12:07:321:36:317:4624:10
7:47
+0:03
Half
13.11 mi12:12:491:41:487:465:17
7:45
-0:02
25K
15.53 mi12:31:332:00:327:4618:44
7:44
-0:01
30K
18.64 mi12:55:392:24:387:4624:06
7:45
+0:01
20M
20.00 mi13:06:122:35:117:4610:33
7:46
+0:01
21M
21.00 mi13:14:272:43:267:478:15
8:15
+0:29
35K
21.75 mi13:19:572:48:567:465:30
7:21
-0:54
23M
23.00 mi13:29:402:58:397:469:43
7:46
+0:25
24M
24.00 mi13:37:153:06:147:467:35
7:35
-0:11
40K
24.85 mi13:43:513:12:507:466:36
7:43
+0:08
25.2M
25.20 mi13:46:463:15:457:462:55
8:27
+0:44
Finish
26.22 mi13:54:553:23:547:478:09
8:00
-0:27

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

7:21 /mi

Average Pace

7:47 /mi

Slowest Pace

8:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:12:44

95% of race

Time at Steady Pace

11:10

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:47 /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 mi10:55:1324:127:4724:12
7:47
#12259
10K
6.21 mi11:19:1948:187:4624:06
7:45
#12481
15K
9.32 mi11:43:221:12:217:4624:03
7:44
#12334
20K
12.43 mi12:07:321:36:317:4624:10
7:47
#12091
Half
13.11 mi12:12:491:41:487:465:17
7:45
#12099
25K
15.53 mi12:31:332:00:327:4618:44
7:44
#11800
30K
18.64 mi12:55:392:24:387:4624:06
7:45
#11242
20M
20.00 mi13:06:122:35:117:4610:33
7:46
#11014
21M
21.00 mi13:14:272:43:267:478:15
8:15
#10869
35K
21.75 mi13:19:572:48:567:465:30
7:21
#10720
23M
23.00 mi13:29:402:58:397:469:43
7:46
#10548
24M
24.00 mi13:37:153:06:147:467:35
7:35
#10423
40K
24.85 mi13:43:513:12:507:466:36
7:43
#10303
25.2M
25.20 mi13:46:463:15:457:462:55
8:27
#10273
Finish
26.22 mi13:54:553:23:547:478:09
8:00
#10322
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi122593010301012209(Top 46%)3015(Top 26%)3015(Top 62%)
10K6.21 mi3.10 mi12481-2223145-1353145-13512743(Top 48%)3276(Top 29%)3276(Top 67%)
15K9.32 mi3.11 mi12334+1473082+633082+6312209(Top 46%)3015(Top 26%)3015(Top 62%)
20K12.43 mi3.11 mi12091+2432965+1172965+11711557(Top 43%)2711(Top 24%)2711(Top 56%)
Half13.11 mi0.68 mi12099-82976-112976-1112249(Top 46%)3041(Top 27%)3041(Top 62%)
25K15.53 mi2.42 mi11800+2992809+1672809+16710517(Top 40%)2240(Top 20%)2240(Top 46%)
30K18.64 mi3.11 mi11242+5582554+2552554+2559045(Top 34%)1729(Top 15%)1729(Top 35%)
20M20.00 mi1.36 mi11014+2282440+1142440+1148618(Top 32%)1651(Top 14%)1651(Top 34%)
21M21.00 mi1.00 mi10869+1452395+452395+458939(Top 34%)1901(Top 17%)1901(Top 39%)
35K21.75 mi0.75 mi10720+1492335+602335+607548(Top 28%)1340(Top 12%)1340(Top 27%)
23M23.00 mi1.25 mi10548+1722275+602275+608182(Top 31%)1672(Top 15%)1672(Top 34%)
24M24.00 mi1.00 mi10423+1252241+342241+348318(Top 31%)1810(Top 16%)1810(Top 37%)
40K24.85 mi0.85 mi10303+1202204+372204+378138(Top 31%)1802(Top 16%)1802(Top 37%)
25.2M25.20 mi0.35 mi10273+302200+42200+49313(Top 35%)2372(Top 21%)2372(Top 49%)
Finish26.22 mi1.02 mi10322-492258-582258-5812129(Top 46%)3758(Top 33%)3758(Top 77%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21stories
+97ft-345ft

Overall

12209

Females

3015

F18-39

3015

5K→10K

3.1 - 6.2 mi

Top 48%
×5stories
+79ft-138ft

Overall

12743

Females

3276

F18-39

3276

10K→15K

6.2 - 9.3 mi

Top 46%
×3stories
+67ft-78ft

Overall

12209

Females

3015

F18-39

3015

15K→20K

9.3 - 12.4 mi

Top 43%
×5stories
+106ft-86ft

Overall

11557

Females

2711

F18-39

2711

20K→Half

12.4 - 13.1 mi

Top 46%
×2stories
+19ft-37ft

Overall

12249

Females

3041

F18-39

3041

Half→25K

13.1 - 15.5 mi

Top 40%
×4stories
+66ft-88ft

Overall

10517

Females

2240

F18-39

2240

25K→30K

15.5 - 18.6 mi

Top 34%
×9stories
+181ft-148ft

Overall

9045

Females

1729

F18-39

1729

30K→20M

18.6 - 20.0 mi

Top 32%
×5stories
+64ft-50ft

Overall

8618

Females

1651

F18-39

1651

20M→21M

20.0 - 21.0 mi

Top 34%
×8stories
+106ft-24ft

Overall

8939

Females

1901

F18-39

1901

21M→35K

21.0 - 21.8 mi

Top 28%
×7stories
+17ft-86ft

Overall

7548

Females

1340

F18-39

1340

35K→23M

21.8 - 23.0 mi

Top 31%
×5stories
+23ft-63ft

Overall

8182

Females

1672

F18-39

1672

23M→24M

23.0 - 24.0 mi

Top 31%
×6stories
+12ft-82ft

Overall

8318

Females

1810

F18-39

1810

24M→40K

24.0 - 24.9 mi

Top 31%
×1story
+6ft-20ft

Overall

8138

Females

1802

F18-39

1802

40K→25.2M

24.9 - 25.2 mi

Top 35%
×1story
+13ft-16ft

Overall

9313

Females

2372

F18-39

2372

25.2M→Finish

25.2 - 26.2 mi

Top 46%
×2stories
+22ft-21ft

Overall

12129

Females

3758

F18-39

3758

Passing Analysis

Category:
Athletes Passed
2818*
Passed By
881
Net Change
+1937
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12259
5K → 10K218440-222#12259#12481
10K → 15K270123+147#12481#12334
15K → 20K30461+243#12334#12091
20K → Half2331-8#12091#12099
Half → 25K31617+299#12099#11800
25K → 30K56810+558#11800#11242
30K → 20M239*11+228#11242#11014
20M → 21M16015+145#11014#10869
21M → 35K1512+149#10869#10720
35K → 23M18412+172#10720#10548
23M → 24M14217+125#10548#10423
24M → 40K13616+120#10423#10303
40K → 25.2M51*21+30#10303#10273
25.2M → Finish56105-49#10273#10322
TOTALS2818*881+1937

* 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