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BOSTON MARATHON 2023

Kimberly Bailey

Bib: 16406•F

NE

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 32%
Gender (Female)
#0 / 11423
Top 12%
Division (F18-39)
#0 / 4884
Top 23%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:25
Rank: #9968
Start → 5K
23:25 | 7:32/mi
10K· 6.21 mi
46:59
Rank: #10569 (-601)
5K → 10K
23:34 | 7:35/mi
15K· 9.32 mi
1:10:26
Rank: #10559 (+10)
10K → 15K
23:27 | 7:33/mi
20K· 12.43 mi
1:33:55
Rank: #10326 (+233)
15K → 20K
23:29 | 7:34/mi
Half· 13.11 mi
1:39:00
Rank: #10301 (+25)
20K → Half
5:05 | 7:27/mi
25K· 15.53 mi
1:57:21
Rank: #10082 (+219)
Half → 25K
18:21 | 7:34/mi
30K· 18.64 mi
2:21:23
Rank: #9852 (+230)
25K → 30K
24:02 | 7:44/mi
20M
2:32:02
Rank: #9750 (+102)
30K → 20M
10:39 | 7:50/mi
21M
2:39:54
Rank: #9548 (+202)
20M → 21M
7:52 | 7:52/mi
35K· 21.75 mi
2:45:24
Rank: #9453 (+95)
21M → 35K
5:30 | 7:21/mi
23M
2:54:45
Rank: #9215 (+238)
35K → 23M
9:21 | 7:28/mi
24M
3:01:53
Rank: #9011 (+204)
23M → 24M
7:08 | 7:08/mi
40K· 24.85 mi
3:07:50
Rank: #8752 (+259)
24M → 40K
5:57 | 6:58/mi
25.2M
3:10:29
Rank: #8679 (+73)
40K → 25.2M
2:39 | 7:41/mi
Finish· 26.22 mi
3:17:27
Rank: #8448 (+231)
25.2M → Finish
6:58 | 6:50/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:39:00
Pace7:33 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:38:27
Pace7:31 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:4823:257:3223:25
7:32
-
10K
6.21 mi11:37:2246:597:3423:34
7:35
+0:03
15K
9.32 mi12:00:491:10:267:3323:27
7:33
-0:02
20K
12.43 mi12:24:181:33:557:3323:29
7:34
+0:01
Half
13.11 mi12:29:231:39:007:335:05
7:27
-0:07
25K
15.53 mi12:47:441:57:217:3318:21
7:34
+0:07
30K
18.64 mi13:11:462:21:237:3524:02
7:44
+0:10
20M
20.00 mi13:22:252:32:027:3610:39
7:50
+0:06
21M
21.00 mi13:30:172:39:547:377:52
7:52
+0:02
35K
21.75 mi13:35:472:45:247:365:30
7:21
-0:31
23M
23.00 mi13:45:082:54:457:369:21
7:28
+0:07
24M
24.00 mi13:52:163:01:537:357:08
7:08
-0:20
40K
24.85 mi13:58:133:07:507:335:57
6:58
-0:10
25.2M
25.20 mi14:00:523:10:297:342:39
7:41
+0:43
Finish
26.22 mi14:07:503:17:277:326:58
6:50
-0:51

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

6:50 /mi

Average Pace

7:32 /mi

Slowest Pace

7:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

39:59

20% of race

Time at Steady Pace

2:37:28

80% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:32 /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 mi11:13:4823:257:3223:25
7:32
#9968
10K
6.21 mi11:37:2246:597:3423:34
7:35
#10569
15K
9.32 mi12:00:491:10:267:3323:27
7:33
#10559
20K
12.43 mi12:24:181:33:557:3323:29
7:34
#10326
Half
13.11 mi12:29:231:39:007:335:05
7:27
#10301
25K
15.53 mi12:47:441:57:217:3318:21
7:34
#10082
30K
18.64 mi13:11:462:21:237:3524:02
7:44
#9852
20M
20.00 mi13:22:252:32:027:3610:39
7:50
#9750
21M
21.00 mi13:30:172:39:547:377:52
7:52
#9548
35K
21.75 mi13:35:472:45:247:365:30
7:21
#9453
23M
23.00 mi13:45:082:54:457:369:21
7:28
#9215
24M
24.00 mi13:52:163:01:537:357:08
7:08
#9011
40K
24.85 mi13:58:133:07:507:335:57
6:58
#8752
25.2M
25.20 mi14:00:523:10:297:342:39
7:41
#8679
Finish
26.22 mi14:07:503:17:277:326:58
6:50
#8448
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi99681843184310563(Top 40%)2114(Top 19%)2114(Top 43%)
10K6.21 mi3.10 mi10569-6012105-2622105-26211192(Top 42%)2424(Top 21%)2424(Top 50%)
15K9.32 mi3.11 mi10559+102095+102095+1010563(Top 40%)2114(Top 19%)2114(Top 43%)
20K12.43 mi3.11 mi10326+2331988+1071988+1079771(Top 37%)1812(Top 16%)1812(Top 37%)
Half13.11 mi0.68 mi10301+251975+131975+139853(Top 37%)1808(Top 16%)1808(Top 37%)
25K15.53 mi2.42 mi10082+2191894+811894+819306(Top 35%)1678(Top 15%)1678(Top 34%)
30K18.64 mi3.11 mi9852+2301824+701824+708911(Top 33%)1671(Top 15%)1671(Top 34%)
20M20.00 mi1.36 mi9750+1021808+161808+169155(Top 34%)1858(Top 16%)1858(Top 38%)
21M21.00 mi1.00 mi9548+2021749+591749+596581(Top 25%)978(Top 9%)978(Top 20%)
35K21.75 mi0.75 mi9453+951729+201729+207524(Top 28%)1316(Top 12%)1316(Top 27%)
23M23.00 mi1.25 mi9215+2381660+691660+696271(Top 24%)913(Top 8%)913(Top 19%)
24M24.00 mi1.00 mi9011+2041600+601600+605421(Top 20%)701(Top 6%)701(Top 14%)
40K24.85 mi0.85 mi8752+2591519+811519+813673(Top 14%)356(Top 3%)356(Top 7%)
25.2M25.20 mi0.35 mi8679+731492+271492+274894(Top 18%)701(Top 6%)701(Top 14%)
Finish26.22 mi1.02 mi8448+2311421+711421+714311(Top 16%)536(Top 5%)536(Top 11%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21stories
+97ft-345ft

Overall

10563

Females

2114

F18-39

2114

5K→10K

3.1 - 6.2 mi

Top 42%
×5stories
+79ft-138ft

Overall

11192

Females

2424

F18-39

2424

10K→15K

6.2 - 9.3 mi

Top 40%
×3stories
+67ft-78ft

Overall

10563

Females

2114

F18-39

2114

15K→20K

9.3 - 12.4 mi

Top 37%
×5stories
+106ft-86ft

Overall

9771

Females

1812

F18-39

1812

20K→Half

12.4 - 13.1 mi

Top 37%
×2stories
+19ft-37ft

Overall

9853

Females

1808

F18-39

1808

Half→25K

13.1 - 15.5 mi

Top 35%
×4stories
+66ft-88ft

Overall

9306

Females

1678

F18-39

1678

25K→30K

15.5 - 18.6 mi

Top 33%
×9stories
+181ft-148ft

Overall

8911

Females

1671

F18-39

1671

30K→20M

18.6 - 20.0 mi

Top 34%
×5stories
+64ft-50ft

Overall

9155

Females

1858

F18-39

1858

20M→21M

20.0 - 21.0 mi

Top 25%
×8stories
+106ft-24ft

Overall

6581

Females

978

F18-39

978

21M→35K

21.0 - 21.8 mi

Top 28%
×7stories
+17ft-86ft

Overall

7524

Females

1316

F18-39

1316

35K→23M

21.8 - 23.0 mi

Top 24%
×5stories
+23ft-63ft

Overall

6271

Females

913

F18-39

913

23M→24M

23.0 - 24.0 mi

Top 20%
×6stories
+12ft-82ft

Overall

5421

Females

701

F18-39

701

24M→40K

24.0 - 24.9 mi

Top 14%
×1story
+6ft-20ft

Overall

3673

Females

356

F18-39

356

40K→25.2M

24.9 - 25.2 mi

Top 18%
×1story
+13ft-16ft

Overall

4894

Females

701

F18-39

701

25.2M→Finish

25.2 - 26.2 mi

Top 16%
×2stories
+22ft-21ft

Overall

4311

Females

536

F18-39

536

Passing Analysis

Category:
Athletes Passed
2625*
Passed By
1104
Net Change
+1520
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9968
5K → 10K93693-601#9968#10569
10K → 15K199189+10#10569#10559
15K → 20K277*44+233#10559#10326
20K → Half4015+25#10326#10301
Half → 25K25536+219#10301#10082
25K → 30K288*58+230#10082#9852
30K → 20M13937+102#9852#9750
20M → 21M2108+202#9750#9548
21M → 35K10813+95#9548#9453
35K → 23M2446+238#9453#9215
23M → 24M2062+204#9215#9011
24M → 40K2590+259#9011#8752
40K → 25.2M752+73#8752#8679
25.2M → Finish2321+231#8679#8448
TOTALS2625*1104+1520

* 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