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BOSTON MARATHON 2023

Emily Kellogg

Bib: 26941•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
30:19
Rank: #22808
Start → 5K
30:19 | 9:45/mi
10K· 6.21 mi
59:48
Rank: #22673 (+135)
5K → 10K
29:29 | 9:29/mi
15K· 9.32 mi
1:29:40
Rank: #22648 (+25)
10K → 15K
29:52 | 9:37/mi
20K· 12.43 mi
1:59:30
Rank: #22453 (+195)
15K → 20K
29:50 | 9:36/mi
Half· 13.11 mi
2:06:00
Rank: #22442 (+11)
20K → Half
6:30 | 9:32/mi
25K· 15.53 mi
2:29:57
Rank: #22355 (+87)
Half → 25K
23:57 | 9:53/mi
30K· 18.64 mi
3:01:25
Rank: #22166 (+189)
25K → 30K
31:28 | 10:08/mi
20M
3:17:49
Rank: #22386 (-220)
30K → 20M
16:24 | 12:04/mi
21M
3:29:09
Rank: #22332 (+54)
20M → 21M
11:20 | 11:20/mi
35K· 21.75 mi
3:36:40
Rank: #22275 (+57)
21M → 35K
7:31 | 10:03/mi
23M
3:50:39
Rank: #22313 (-38)
35K → 23M
13:59 | 11:10/mi
24M
4:01:09
Rank: #22308 (+5)
23M → 24M
10:30 | 10:30/mi
40K· 24.85 mi
4:09:53
Rank: #22243 (+65)
24M → 40K
8:44 | 10:13/mi
25.2M
4:14:10
Rank: #22258 (-15)
40K → 25.2M
4:17 | 12:25/mi
Finish· 26.22 mi
4:23:33
Rank: #22154 (+104)
25.2M → Finish
9:23 | 9:12/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:06:00
Pace9:37 /mi
2nd Half
Distance13.11 mi
Time2:17:33
Pace10:30 /mi
📊Positive Split: 9.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:3130:199:4530:19
9:45
-
10K
6.21 mi12:22:0059:489:3729:29
9:29
-0:16
15K
9.32 mi12:51:521:29:409:3729:52
9:37
+0:08
20K
12.43 mi13:21:421:59:309:3729:50
9:36
-0:01
Half
13.11 mi13:28:122:06:009:376:30
9:32
-0:04
25K
15.53 mi13:52:092:29:579:3923:57
9:53
+0:21
30K
18.64 mi14:23:373:01:259:4431:28
10:08
+0:15
20M
20.00 mi14:40:013:17:499:5316:24
12:04
+1:56
21M
21.00 mi14:51:213:29:099:5811:20
11:20
-0:44
35K
21.75 mi14:58:523:36:409:587:31
10:03
-1:17
23M
23.00 mi15:12:513:50:3910:0213:59
11:10
+1:07
24M
24.00 mi15:23:214:01:0910:0310:30
10:30
-0:40
40K
24.85 mi15:32:054:09:5310:038:44
10:13
-0:17
25.2M
25.20 mi15:36:224:14:1010:054:17
12:25
+2:12
Finish
26.22 mi15:45:454:23:3310:049:23
9:12
-3:13

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

9:12 /mi

Average Pace

10:04 /mi

Slowest Pace

12:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

45:22

17% of race

Time at Steady Pace

2:52:11

65% of race

Time at Slower Pace

46:00

17% of race

Average Pace: 10:03 /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 mi11:52:3130:199:4530:19
9:45
#22808
10K
6.21 mi12:22:0059:489:3729:29
9:29
#22673
15K
9.32 mi12:51:521:29:409:3729:52
9:37
#22648
20K
12.43 mi13:21:421:59:309:3729:50
9:36
#22453
Half
13.11 mi13:28:122:06:009:376:30
9:32
#22442
25K
15.53 mi13:52:092:29:579:3923:57
9:53
#22355
30K
18.64 mi14:23:373:01:259:4431:28
10:08
#22166
20M
20.00 mi14:40:013:17:499:5316:24
12:04
#22386
21M
21.00 mi14:51:213:29:099:5811:20
11:20
#22332
35K
21.75 mi14:58:523:36:409:587:31
10:03
#22275
23M
23.00 mi15:12:513:50:3910:0213:59
11:10
#22313
24M
24.00 mi15:23:214:01:0910:0310:30
10:30
#22308
40K
24.85 mi15:32:054:09:5310:038:44
10:13
#22243
25.2M
25.20 mi15:36:224:14:1010:054:17
12:25
#22258
Finish
26.22 mi15:45:454:23:3310:049:23
9:12
#22154
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi228089279927922557(Top 85%)9100(Top 80%)9100(Top 186%)
10K6.21 mi3.10 mi22673+1359184+959184+9522490(Top 84%)9081(Top 79%)9081(Top 186%)
15K9.32 mi3.11 mi22648+259163+219163+2122557(Top 85%)9100(Top 80%)9100(Top 186%)
20K12.43 mi3.11 mi22453+1959061+1029061+10221876(Top 82%)8729(Top 76%)8729(Top 179%)
Half13.11 mi0.68 mi22442+119056+59056+522218(Top 83%)8905(Top 78%)8905(Top 182%)
25K15.53 mi2.42 mi22355+879029+279029+2721931(Top 82%)8800(Top 77%)8800(Top 180%)
30K18.64 mi3.11 mi22166+1898928+1018928+10121367(Top 80%)8555(Top 75%)8555(Top 175%)
20M20.00 mi1.36 mi22386-2209064-1369064-13624287(Top 91%)10227(Top 90%)10227(Top 209%)
21M21.00 mi1.00 mi22332+549041+239041+2321570(Top 81%)8773(Top 77%)8773(Top 180%)
35K21.75 mi0.75 mi22275+579019+229019+2221430(Top 80%)8734(Top 76%)8734(Top 179%)
23M23.00 mi1.25 mi22313-389051-329051-3222679(Top 85%)9419(Top 82%)9419(Top 193%)
24M24.00 mi1.00 mi22308+59051905122047(Top 83%)9123(Top 80%)9123(Top 187%)
40K24.85 mi0.85 mi22243+659020+319020+3120543(Top 77%)8359(Top 73%)8359(Top 171%)
25.2M25.20 mi0.35 mi22258-159035-159035-1523174(Top 87%)9751(Top 85%)9751(Top 200%)
Finish26.22 mi1.02 mi22154+1048989+468989+4618988(Top 71%)7440(Top 65%)7440(Top 152%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 85%
×21stories
+97ft-345ft

Overall

22557

Females

9100

F18-39

9100

5K→10K

3.1 - 6.2 mi

Top 84%
×5stories
+79ft-138ft

Overall

22490

Females

9081

F18-39

9081

10K→15K

6.2 - 9.3 mi

Top 85%
×3stories
+67ft-78ft

Overall

22557

Females

9100

F18-39

9100

15K→20K

9.3 - 12.4 mi

Top 82%
×5stories
+106ft-86ft

Overall

21876

Females

8729

F18-39

8729

20K→Half

12.4 - 13.1 mi

Top 83%
×2stories
+19ft-37ft

Overall

22218

Females

8905

F18-39

8905

Half→25K

13.1 - 15.5 mi

Top 82%
×4stories
+66ft-88ft

Overall

21931

Females

8800

F18-39

8800

25K→30K

15.5 - 18.6 mi

Top 80%
×9stories
+181ft-148ft

Overall

21367

Females

8555

F18-39

8555

30K→20M

18.6 - 20.0 mi

Top 91%
×5stories
+64ft-50ft

Overall

24287

Females

10227

F18-39

10227

20M→21M

20.0 - 21.0 mi

Top 81%
×8stories
+106ft-24ft

Overall

21570

Females

8773

F18-39

8773

21M→35K

21.0 - 21.8 mi

Top 80%
×7stories
+17ft-86ft

Overall

21430

Females

8734

F18-39

8734

35K→23M

21.8 - 23.0 mi

Top 85%
×5stories
+23ft-63ft

Overall

22679

Females

9419

F18-39

9419

23M→24M

23.0 - 24.0 mi

Top 83%
×6stories
+12ft-82ft

Overall

22047

Females

9123

F18-39

9123

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

20543

Females

8359

F18-39

8359

40K→25.2M

24.9 - 25.2 mi

Top 87%
×1story
+13ft-16ft

Overall

23174

Females

9751

F18-39

9751

25.2M→Finish

25.2 - 26.2 mi

Top 71%
×2stories
+22ft-21ft

Overall

18988

Females

7440

F18-39

7440

Passing Analysis

Category:
Athletes Passed
1547
Passed By
893
Net Change
+654
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22808
5K → 10K316181+135#22808#22673
10K → 15K153128+25#22673#22648
15K → 20K24348+195#22648#22453
20K → Half2817+11#22453#22442
Half → 25K14356+87#22442#22355
25K → 30K22334+189#22355#22166
30K → 20M20240-220#22166#22386
20M → 21M7824+54#22386#22332
21M → 35K669+57#22332#22275
35K → 23M4381-38#22275#22313
23M → 24M3833+5#22313#22308
24M → 40K7813+65#22308#22243
40K → 25.2M1227-15#22243#22258
25.2M → Finish1062+104#22258#22154
TOTALS1547893+654
📊

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