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BOSTON MARATHON 2023

Emily Day

Bib: 9896•F

IL

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 21%
Gender (Female)
#0 / 11423
Top 5%
Division (F18-39)
#0 / 4884
Top 9%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:28
Rank: #5649
Start → 5K
21:28 | 6:55/mi
10K· 6.21 mi
42:36
Rank: #5474 (+175)
5K → 10K
21:08 | 6:48/mi
15K· 9.32 mi
1:03:59
Rank: #5593 (-119)
10K → 15K
21:23 | 6:53/mi
20K· 12.43 mi
1:25:45
Rank: #5716 (-123)
15K → 20K
21:46 | 7:00/mi
Half· 13.11 mi
1:30:27
Rank: #5723 (-7)
20K → Half
4:42 | 6:53/mi
25K· 15.53 mi
1:47:35
Rank: #5745 (-22)
Half → 25K
17:08 | 7:04/mi
30K· 18.64 mi
2:10:24
Rank: #5781 (-36)
25K → 30K
22:49 | 7:21/mi
20M
2:20:35
Rank: #5828 (-47)
30K → 20M
10:11 | 7:30/mi
21M
2:28:29
Rank: #5827 (+1)
20M → 21M
7:54 | 7:54/mi
35K· 21.75 mi
2:33:56
Rank: #5844 (-17)
21M → 35K
5:27 | 7:17/mi
23M
2:43:00
Rank: #5741 (+103)
35K → 23M
9:04 | 7:14/mi
24M
2:50:27
Rank: #5753 (-12)
23M → 24M
7:27 | 7:27/mi
40K· 24.85 mi
2:56:58
Rank: #5759 (-6)
24M → 40K
6:31 | 7:37/mi
25.2M
2:59:43
Rank: #5741 (+18)
40K → 25.2M
2:45 | 7:58/mi
Finish· 26.22 mi
3:07:02
Rank: #5711 (+30)
25.2M → Finish
7:19 | 7:11/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:27
Pace6:54 /mi
2nd Half
Distance13.11 mi
Time1:36:35
Pace7:22 /mi
📊Positive Split: 6.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:0621:286:5521:28
6:55
-
10K
6.21 mi11:08:1442:366:5121:08
6:48
-0:07
15K
9.32 mi11:29:371:03:596:5221:23
6:53
+0:05
20K
12.43 mi11:51:231:25:456:5421:46
7:00
+0:07
Half
13.11 mi11:56:051:30:276:544:42
6:53
-0:07
25K
15.53 mi12:13:131:47:356:5617:08
7:04
+0:11
30K
18.64 mi12:36:022:10:247:0022:49
7:21
+0:17
20M
20.00 mi12:46:132:20:357:0210:11
7:30
+0:09
21M
21.00 mi12:54:072:28:297:047:54
7:54
+0:24
35K
21.75 mi12:59:342:33:567:055:27
7:17
-0:37
23M
23.00 mi13:08:382:43:007:059:04
7:14
-0:03
24M
24.00 mi13:16:052:50:277:067:27
7:27
+0:13
40K
24.85 mi13:22:362:56:587:076:31
7:37
+0:10
25.2M
25.20 mi13:25:212:59:437:082:45
7:58
+0:21
Finish
26.22 mi13:32:403:07:027:087:19
7:11
-0:47

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

6:48 /mi

Average Pace

7:08 /mi

Slowest Pace

7:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:39:41

85% of race

Time at Steady Pace

27:21

15% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:08 /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 mi10:47:0621:286:5521:28
6:55
#5649
10K
6.21 mi11:08:1442:366:5121:08
6:48
#5474
15K
9.32 mi11:29:371:03:596:5221:23
6:53
#5593
20K
12.43 mi11:51:231:25:456:5421:46
7:00
#5716
Half
13.11 mi11:56:051:30:276:544:42
6:53
#5723
25K
15.53 mi12:13:131:47:356:5617:08
7:04
#5745
30K
18.64 mi12:36:022:10:247:0022:49
7:21
#5781
20M
20.00 mi12:46:132:20:357:0210:11
7:30
#5828
21M
21.00 mi12:54:072:28:297:047:54
7:54
#5827
35K
21.75 mi12:59:342:33:567:055:27
7:17
#5844
23M
23.00 mi13:08:382:43:007:059:04
7:14
#5741
24M
24.00 mi13:16:052:50:277:067:27
7:27
#5753
40K
24.85 mi13:22:362:56:587:076:31
7:37
#5759
25.2M
25.20 mi13:25:212:59:437:082:45
7:58
#5741
Finish
26.22 mi13:32:403:07:027:087:19
7:11
#5711
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi56494454455848(Top 22%)500(Top 4%)500(Top 10%)
10K6.21 mi3.10 mi5474+175416+29416+295350(Top 20%)406(Top 4%)406(Top 8%)
15K9.32 mi3.11 mi5593-119437-21437-215848(Top 22%)500(Top 4%)500(Top 10%)
20K12.43 mi3.11 mi5716-123454-17454-176031(Top 23%)527(Top 5%)527(Top 11%)
Half13.11 mi0.68 mi5723-7456-2456-25987(Top 22%)507(Top 4%)507(Top 10%)
25K15.53 mi2.42 mi5745-22461-5461-55954(Top 22%)538(Top 5%)538(Top 11%)
30K18.64 mi3.11 mi5781-36478-17478-176288(Top 24%)704(Top 6%)704(Top 14%)
20M20.00 mi1.36 mi5828-47500-22500-226758(Top 25%)937(Top 8%)937(Top 19%)
21M21.00 mi1.00 mi5827+1512-12512-126750(Top 25%)1031(Top 9%)1031(Top 21%)
35K21.75 mi0.75 mi5844-17522-10522-107057(Top 27%)1110(Top 10%)1110(Top 23%)
23M23.00 mi1.25 mi5741+103516+6516+65018(Top 19%)532(Top 5%)532(Top 11%)
24M24.00 mi1.00 mi5753-12525-9525-97378(Top 28%)1425(Top 12%)1425(Top 29%)
40K24.85 mi0.85 mi5759-6539-14539-147463(Top 28%)1536(Top 13%)1536(Top 31%)
25.2M25.20 mi0.35 mi5741+18544-5544-56383(Top 24%)1167(Top 10%)1167(Top 24%)
Finish26.22 mi1.02 mi5711+30548-4548-46303(Top 24%)1160(Top 10%)1160(Top 24%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 22%
×21stories
+97ft-345ft

Overall

5848

Females

500

F18-39

500

5K→10K

3.1 - 6.2 mi

Top 20%
×5stories
+79ft-138ft

Overall

5350

Females

406

F18-39

406

10K→15K

6.2 - 9.3 mi

Top 22%
×3stories
+67ft-78ft

Overall

5848

Females

500

F18-39

500

15K→20K

9.3 - 12.4 mi

Top 23%
×5stories
+106ft-86ft

Overall

6031

Females

527

F18-39

527

20K→Half

12.4 - 13.1 mi

Top 22%
×2stories
+19ft-37ft

Overall

5987

Females

507

F18-39

507

Half→25K

13.1 - 15.5 mi

Top 22%
×4stories
+66ft-88ft

Overall

5954

Females

538

F18-39

538

25K→30K

15.5 - 18.6 mi

Top 24%
×9stories
+181ft-148ft

Overall

6288

Females

704

F18-39

704

30K→20M

18.6 - 20.0 mi

Top 25%
×5stories
+64ft-50ft

Overall

6758

Females

937

F18-39

937

20M→21M

20.0 - 21.0 mi

Top 25%
×8stories
+106ft-24ft

Overall

6750

Females

1031

F18-39

1031

21M→35K

21.0 - 21.8 mi

Top 27%
×7stories
+17ft-86ft

Overall

7057

Females

1110

F18-39

1110

35K→23M

21.8 - 23.0 mi

Top 19%
×5stories
+23ft-63ft

Overall

5018

Females

532

F18-39

532

23M→24M

23.0 - 24.0 mi

Top 28%
×6stories
+12ft-82ft

Overall

7378

Females

1425

F18-39

1425

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7463

Females

1536

F18-39

1536

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6383

Females

1167

F18-39

1167

25.2M→Finish

25.2 - 26.2 mi

Top 24%
×2stories
+22ft-21ft

Overall

6303

Females

1160

F18-39

1160

Passing Analysis

Category:
Athletes Passed
1071
Passed By
1133
Net Change
-62
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5649
5K → 10K293118+175#5649#5474
10K → 15K77196-119#5474#5593
15K → 20K67190-123#5593#5716
20K → Half1421-7#5716#5723
Half → 25K7698-22#5723#5745
25K → 30K103139-36#5745#5781
30K → 20M5198-47#5781#5828
20M → 21M5655+1#5828#5827
21M → 35K2744-17#5827#5844
35K → 23M11613+103#5844#5741
23M → 24M4456-12#5741#5753
24M → 40K4551-6#5753#5759
40K → 25.2M3315+18#5759#5741
25.2M → Finish6939+30#5741#5711
TOTALS10711133-62
📊

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