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BOSTON MARATHON 2023

Shelby Holt

Bib: 31145•F

MA

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
33:09
Rank: #25122
Start → 5K
33:09 | 10:40/mi
10K· 6.21 mi
1:05:56
Rank: #24931 (+191)
5K → 10K
32:47 | 10:33/mi
15K· 9.32 mi
1:39:09
Rank: #24873 (+58)
10K → 15K
33:13 | 10:41/mi
20K· 12.43 mi
2:12:58
Rank: #24762 (+111)
15K → 20K
33:49 | 10:53/mi
Half· 13.11 mi
2:20:12
Rank: #24739 (+23)
20K → Half
7:14 | 10:36/mi
25K· 15.53 mi
2:47:18
Rank: #24665 (+74)
Half → 25K
27:06 | 11:11/mi
30K· 18.64 mi
3:24:31
Rank: #24624 (+41)
25K → 30K
37:13 | 11:59/mi
20M
3:41:17
Rank: #24634 (-10)
30K → 20M
16:46 | 12:20/mi
21M
3:54:03
Rank: #24611 (+23)
20M → 21M
12:46 | 12:46/mi
35K· 21.75 mi
4:02:49
Rank: #24599 (+12)
21M → 35K
8:46 | 11:43/mi
23M
4:17:16
Rank: #24525 (+74)
35K → 23M
14:27 | 11:32/mi
24M
4:28:42
Rank: #24495 (+30)
23M → 24M
11:26 | 11:26/mi
40K· 24.85 mi
4:38:49
Rank: #24477 (+18)
24M → 40K
10:07 | 11:50/mi
25.2M
4:43:19
Rank: #24482 (-5)
40K → 25.2M
4:30 | 13:03/mi
Finish· 26.22 mi
4:55:11
Rank: #24512 (-30)
25.2M → Finish
11:52 | 11:39/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:20:12
Pace10:42 /mi
2nd Half
Distance13.11 mi
Time2:34:59
Pace11:49 /mi
📊Positive Split: 10.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:53:3533:0910:4033:09
10:40
-
10K
6.21 mi12:26:221:05:5610:3732:47
10:33
-0:07
15K
9.32 mi12:59:351:39:0910:3833:13
10:41
+0:08
20K
12.43 mi13:33:242:12:5810:4233:49
10:53
+0:12
Half
13.11 mi13:40:382:20:1210:427:14
10:36
-0:17
25K
15.53 mi14:07:442:47:1810:4627:06
11:11
+0:35
30K
18.64 mi14:44:573:24:3110:5837:13
11:59
+0:48
20M
20.00 mi15:01:433:41:1711:0416:46
12:20
+0:21
21M
21.00 mi15:14:293:54:0311:0912:46
12:46
+0:26
35K
21.75 mi15:23:154:02:4911:108:46
11:43
-1:03
23M
23.00 mi15:37:424:17:1611:1114:27
11:32
-0:11
24M
24.00 mi15:49:084:28:4211:1211:26
11:26
-0:06
40K
24.85 mi15:59:154:38:4911:1310:07
11:50
+0:24
25.2M
25.20 mi16:03:454:43:1911:154:30
13:03
+1:13
Finish
26.22 mi16:15:374:55:1111:1611:52
11:39
-1:24

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

10:33 /mi

Average Pace

11:16 /mi

Slowest Pace

13:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:20:12

47% of race

Time at Steady Pace

1:23:44

28% of race

Time at Slower Pace

1:11:15

24% of race

Average Pace: 11:15 /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 mi11:53:3533:0910:4033:09
10:40
#25122
10K
6.21 mi12:26:221:05:5610:3732:47
10:33
#24931
15K
9.32 mi12:59:351:39:0910:3833:13
10:41
#24873
20K
12.43 mi13:33:242:12:5810:4233:49
10:53
#24762
Half
13.11 mi13:40:382:20:1210:427:14
10:36
#24739
25K
15.53 mi14:07:442:47:1810:4627:06
11:11
#24665
30K
18.64 mi14:44:573:24:3110:5837:13
11:59
#24624
20M
20.00 mi15:01:433:41:1711:0416:46
12:20
#24634
21M
21.00 mi15:14:293:54:0311:0912:46
12:46
#24611
35K
21.75 mi15:23:154:02:4911:108:46
11:43
#24599
23M
23.00 mi15:37:424:17:1611:1114:27
11:32
#24525
24M
24.00 mi15:49:084:28:4211:1211:26
11:26
#24495
40K
24.85 mi15:59:154:38:4911:1310:07
11:50
#24477
25.2M
25.20 mi16:03:454:43:1911:154:30
13:03
#24482
Finish
26.22 mi16:15:374:55:1111:1611:52
11:39
#24512
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi25122105021050224791(Top 93%)10344(Top 91%)10344(Top 212%)
10K6.21 mi3.10 mi24931+19110397+10510397+10524774(Top 93%)10314(Top 90%)10314(Top 211%)
15K9.32 mi3.11 mi24873+5810370+2710370+2724791(Top 93%)10344(Top 91%)10344(Top 212%)
20K12.43 mi3.11 mi24762+11110323+4710323+4724459(Top 92%)10184(Top 89%)10184(Top 209%)
Half13.11 mi0.68 mi24739+2310314+910314+924387(Top 92%)10148(Top 89%)10148(Top 208%)
25K15.53 mi2.42 mi24665+7410285+2910285+2924239(Top 91%)10080(Top 88%)10080(Top 206%)
30K18.64 mi3.11 mi24624+4110273+1210273+1224473(Top 92%)10262(Top 90%)10262(Top 210%)
20M20.00 mi1.36 mi24634-1010291-1810291-1824585(Top 92%)10385(Top 91%)10385(Top 213%)
21M21.00 mi1.00 mi24611+2310276+1510276+1523800(Top 89%)9986(Top 87%)9986(Top 204%)
35K21.75 mi0.75 mi24599+1210281-510281-524386(Top 92%)10331(Top 90%)10331(Top 212%)
23M23.00 mi1.25 mi24525+7410244+3710244+3723337(Top 88%)9771(Top 86%)9771(Top 200%)
24M24.00 mi1.00 mi24495+3010240+410240+423784(Top 89%)10049(Top 88%)10049(Top 206%)
40K24.85 mi0.85 mi24477+1810234+610234+623679(Top 89%)10033(Top 88%)10033(Top 205%)
25.2M25.20 mi0.35 mi24482-510243-910243-924046(Top 90%)10211(Top 89%)10211(Top 209%)
Finish26.22 mi1.02 mi24512-3010272-2910272-2924876(Top 93%)10596(Top 93%)10596(Top 217%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 93%
×21stories
+97ft-345ft

Overall

24791

Females

10344

F18-39

10344

5K→10K

3.1 - 6.2 mi

Top 93%
×5stories
+79ft-138ft

Overall

24774

Females

10314

F18-39

10314

10K→15K

6.2 - 9.3 mi

Top 93%
×3stories
+67ft-78ft

Overall

24791

Females

10344

F18-39

10344

15K→20K

9.3 - 12.4 mi

Top 92%
×5stories
+106ft-86ft

Overall

24459

Females

10184

F18-39

10184

20K→Half

12.4 - 13.1 mi

Top 92%
×2stories
+19ft-37ft

Overall

24387

Females

10148

F18-39

10148

Half→25K

13.1 - 15.5 mi

Top 91%
×4stories
+66ft-88ft

Overall

24239

Females

10080

F18-39

10080

25K→30K

15.5 - 18.6 mi

Top 92%
×9stories
+181ft-148ft

Overall

24473

Females

10262

F18-39

10262

30K→20M

18.6 - 20.0 mi

Top 92%
×5stories
+64ft-50ft

Overall

24585

Females

10385

F18-39

10385

20M→21M

20.0 - 21.0 mi

Top 89%
×8stories
+106ft-24ft

Overall

23800

Females

9986

F18-39

9986

21M→35K

21.0 - 21.8 mi

Top 92%
×7stories
+17ft-86ft

Overall

24386

Females

10331

F18-39

10331

35K→23M

21.8 - 23.0 mi

Top 88%
×5stories
+23ft-63ft

Overall

23337

Females

9771

F18-39

9771

23M→24M

23.0 - 24.0 mi

Top 89%
×6stories
+12ft-82ft

Overall

23784

Females

10049

F18-39

10049

24M→40K

24.0 - 24.9 mi

Top 89%
×1story
+6ft-20ft

Overall

23679

Females

10033

F18-39

10033

40K→25.2M

24.9 - 25.2 mi

Top 90%
×1story
+13ft-16ft

Overall

24046

Females

10211

F18-39

10211

25.2M→Finish

25.2 - 26.2 mi

Top 93%
×2stories
+22ft-21ft

Overall

24876

Females

10596

F18-39

10596

Passing Analysis

Category:
Athletes Passed
1155
Passed By
545
Net Change
+610
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25122
5K → 10K29099+191#25122#24931
10K → 15K14284+58#24931#24873
15K → 20K15746+111#24873#24762
20K → Half3714+23#24762#24739
Half → 25K11541+74#24739#24665
25K → 30K11170+41#24665#24624
30K → 20M4252-10#24624#24634
20M → 21M4421+23#24634#24611
21M → 35K3220+12#24611#24599
35K → 23M828+74#24599#24525
23M → 24M4919+30#24525#24495
24M → 40K2911+18#24495#24477
40K → 25.2M914-5#24477#24482
25.2M → Finish1646-30#24482#24512
TOTALS1155545+610
📊

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