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BOSTON MARATHON 2023

Chelsey Kirkland

Bib: 12155•F

MN

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 36%
Gender (Female)
#0 / 11423
Top 16%
Division (F18-39)
#0 / 4884
Top 29%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:39
Rank: #13536
Start → 5K
24:39 | 7:56/mi
10K· 6.21 mi
48:47
Rank: #13195 (+341)
5K → 10K
24:08 | 7:46/mi
15K· 9.32 mi
1:12:38
Rank: #12613 (+582)
10K → 15K
23:51 | 7:41/mi
20K· 12.43 mi
1:36:25
Rank: #12034 (+579)
15K → 20K
23:47 | 7:39/mi
Half· 13.11 mi
1:41:38
Rank: #12006 (+28)
20K → Half
5:13 | 7:39/mi
25K· 15.53 mi
2:00:10
Rank: #11570 (+436)
Half → 25K
18:32 | 7:39/mi
30K· 18.64 mi
2:24:28
Rank: #11166 (+404)
25K → 30K
24:18 | 7:49/mi
20M
2:34:48
Rank: #10844 (+322)
30K → 20M
10:20 | 7:36/mi
21M
2:42:41
Rank: #10590 (+254)
20M → 21M
7:53 | 7:53/mi
35K· 21.75 mi
2:47:55
Rank: #10363 (+227)
21M → 35K
5:14 | 7:00/mi
23M
2:57:06
Rank: #10001 (+362)
35K → 23M
9:11 | 7:20/mi
24M
3:04:08
Rank: #9705 (+296)
23M → 24M
7:02 | 7:02/mi
40K· 24.85 mi
3:10:39
Rank: #9593 (+112)
24M → 40K
6:31 | 7:37/mi
25.2M
3:13:32
Rank: #9553 (+40)
40K → 25.2M
2:53 | 8:22/mi
Finish· 26.22 mi
3:21:10
Rank: #9495 (+58)
25.2M → Finish
7:38 | 7:29/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:41:38
Pace7:45 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:39:32
Pace7:36 /mi
📊Negative Split: 2.1% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:4224:397:5624:39
7:56
-
10K
6.21 mi11:16:5048:477:5124:08
7:46
-0:10
15K
9.32 mi11:40:411:12:387:4823:51
7:41
-0:05
20K
12.43 mi12:04:281:36:257:4623:47
7:39
-0:02
Half
13.11 mi12:09:411:41:387:455:13
7:39
0:00
25K
15.53 mi12:28:132:00:107:4418:32
7:39
0:00
30K
18.64 mi12:52:312:24:287:4524:18
7:49
+0:10
20M
20.00 mi13:02:512:34:487:4410:20
7:36
-0:13
21M
21.00 mi13:10:442:42:417:457:53
7:53
+0:17
35K
21.75 mi13:15:582:47:557:435:14
7:00
-0:53
23M
23.00 mi13:25:092:57:067:429:11
7:20
+0:20
24M
24.00 mi13:32:113:04:087:407:02
7:02
-0:18
40K
24.85 mi13:38:423:10:397:406:31
7:37
+0:35
25.2M
25.20 mi13:41:353:13:327:412:53
8:22
+0:45
Finish
26.22 mi13:49:133:21:107:417:38
7:29
-0:53

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

7:00 /mi

Average Pace

7:41 /mi

Slowest Pace

8:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:57:19

58% of race

Time at Steady Pace

1:20:58

40% of race

Time at Slower Pace

2:53

1% of race

Average Pace: 7:40 /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 mi10:52:4224:397:5624:39
7:56
#13536
10K
6.21 mi11:16:5048:477:5124:08
7:46
#13195
15K
9.32 mi11:40:411:12:387:4823:51
7:41
#12613
20K
12.43 mi12:04:281:36:257:4623:47
7:39
#12034
Half
13.11 mi12:09:411:41:387:455:13
7:39
#12006
25K
15.53 mi12:28:132:00:107:4418:32
7:39
#11570
30K
18.64 mi12:52:312:24:287:4524:18
7:49
#11166
20M
20.00 mi13:02:512:34:487:4410:20
7:36
#10844
21M
21.00 mi13:10:442:42:417:457:53
7:53
#10590
35K
21.75 mi13:15:582:47:557:435:14
7:00
#10363
23M
23.00 mi13:25:092:57:067:429:11
7:20
#10001
24M
24.00 mi13:32:113:04:087:407:02
7:02
#9705
40K
24.85 mi13:38:423:10:397:406:31
7:37
#9593
25.2M
25.20 mi13:41:353:13:327:412:53
8:22
#9553
Finish
26.22 mi13:49:133:21:107:417:38
7:29
#9495
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi135363738373811648(Top 44%)2699(Top 24%)2699(Top 55%)
10K6.21 mi3.10 mi13195+3413560+1783560+17812846(Top 48%)3335(Top 29%)3335(Top 68%)
15K9.32 mi3.11 mi12613+5823236+3243236+32411648(Top 44%)2699(Top 24%)2699(Top 55%)
20K12.43 mi3.11 mi12034+5792930+3062930+30610566(Top 40%)2177(Top 19%)2177(Top 45%)
Half13.11 mi0.68 mi12006+282921+92921+911421(Top 43%)2562(Top 22%)2562(Top 52%)
25K15.53 mi2.42 mi11570+4362677+2442677+2449884(Top 37%)1953(Top 17%)1953(Top 40%)
30K18.64 mi3.11 mi11166+4042508+1692508+1699534(Top 36%)1941(Top 17%)1941(Top 40%)
20M20.00 mi1.36 mi10844+3222353+1552353+1557559(Top 28%)1247(Top 11%)1247(Top 26%)
21M21.00 mi1.00 mi10590+2542245+1082245+1086673(Top 25%)1016(Top 9%)1016(Top 21%)
35K21.75 mi0.75 mi10363+2272146+992146+995372(Top 20%)598(Top 5%)598(Top 12%)
23M23.00 mi1.25 mi10001+3621988+1581988+1585521(Top 21%)671(Top 6%)671(Top 14%)
24M24.00 mi1.00 mi9705+2961891+971891+974869(Top 18%)544(Top 5%)544(Top 11%)
40K24.85 mi0.85 mi9593+1121865+261865+267485(Top 28%)1558(Top 14%)1558(Top 32%)
25.2M25.20 mi0.35 mi9553+401864+11864+18719(Top 33%)2122(Top 19%)2122(Top 43%)
Finish26.22 mi1.02 mi9495+581865-11865-18505(Top 32%)2026(Top 18%)2026(Top 41%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 44%
×21stories
+97ft-345ft

Overall

11648

Females

2699

F18-39

2699

5K→10K

3.1 - 6.2 mi

Top 48%
×5stories
+79ft-138ft

Overall

12846

Females

3335

F18-39

3335

10K→15K

6.2 - 9.3 mi

Top 44%
×3stories
+67ft-78ft

Overall

11648

Females

2699

F18-39

2699

15K→20K

9.3 - 12.4 mi

Top 40%
×5stories
+106ft-86ft

Overall

10566

Females

2177

F18-39

2177

20K→Half

12.4 - 13.1 mi

Top 43%
×2stories
+19ft-37ft

Overall

11421

Females

2562

F18-39

2562

Half→25K

13.1 - 15.5 mi

Top 37%
×4stories
+66ft-88ft

Overall

9884

Females

1953

F18-39

1953

25K→30K

15.5 - 18.6 mi

Top 36%
×9stories
+181ft-148ft

Overall

9534

Females

1941

F18-39

1941

30K→20M

18.6 - 20.0 mi

Top 28%
×5stories
+64ft-50ft

Overall

7559

Females

1247

F18-39

1247

20M→21M

20.0 - 21.0 mi

Top 25%
×8stories
+106ft-24ft

Overall

6673

Females

1016

F18-39

1016

21M→35K

21.0 - 21.8 mi

Top 20%
×7stories
+17ft-86ft

Overall

5372

Females

598

F18-39

598

35K→23M

21.8 - 23.0 mi

Top 21%
×5stories
+23ft-63ft

Overall

5521

Females

671

F18-39

671

23M→24M

23.0 - 24.0 mi

Top 18%
×6stories
+12ft-82ft

Overall

4869

Females

544

F18-39

544

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7485

Females

1558

F18-39

1558

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

8719

Females

2122

F18-39

2122

25.2M→Finish

25.2 - 26.2 mi

Top 32%
×2stories
+22ft-21ft

Overall

8505

Females

2026

F18-39

2026

Passing Analysis

Category:
Athletes Passed
4374*
Passed By
333
Net Change
+4041
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13536
5K → 10K508167+341#13536#13195
10K → 15K62240+582#13195#12613
15K → 20K59112+579#12613#12034
20K → Half4012+28#12034#12006
Half → 25K4426+436#12006#11570
25K → 30K43329+404#11570#11166
30K → 20M326*4+322#11166#10844
20M → 21M2540+254#10844#10590
21M → 35K2270+227#10590#10363
35K → 23M362*0+362#10363#10001
23M → 24M296*0+296#10001#9705
24M → 40K121*9+112#9705#9593
40K → 25.2M5919+40#9593#9553
25.2M → Finish9335+58#9553#9495
TOTALS4374*333+4041

* 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