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BOSTON MARATHON 2023

Madeleine Emerson

Bib: 15031•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 45%
Gender (Female)
#0 / 11423
Top 27%
Division (F18-39)
#0 / 4884
Top 45%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:45/mi
24:06
↑ 97↓ 3451.5%
10K· 6.21 mi
7:45/mi
48:12
↑ 79↓ 1380.4%
15K· 9.32 mi
7:34/mi
1:11:41
↑ 67↓ 78
20K· 12.43 mi
7:38/mi
1:35:24
↑ 106↓ 860.1%
Half· 13.11 mi
7:36/mi
1:40:35
↑ 19↓ 370.5%
25K· 15.53 mi
7:38/mi
1:59:05
↑ 66↓ 880.2%
30K· 18.64 mi
8:11/mi
2:24:29
↑ 181↓ 1480.2%
20M
8:21/mi
2:35:50
↑ 64↓ 500.2%
21M
9:04/mi
2:44:54
↑ 106↓ 241.6%
35K· 21.75 mi
8:19/mi
2:51:07
↑ 17↓ 861.7%
23M
8:36/mi
3:01:53
↑ 23↓ 630.6%
24M
8:31/mi
3:10:24
↓ 821.3%
40K· 24.85 mi
8:30/mi
3:17:40
↓ 200.3%
25.2M
9:02/mi
3:20:47
↑ 13↓ 160.2%
Finish· 26.22 mi
8:11/mi
3:29:07
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:35
Pace7:40 /mi
2nd Half
Distance13.11 mi
Time1:48:32
Pace8:17 /mi
📊Positive Split: 7.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:1724:067:4524:06
7:45
-
10K
6.21 mi11:18:2348:127:4524:06
7:45
0:00
15K
9.32 mi11:41:521:11:417:4123:29
7:34
-0:11
20K
12.43 mi12:05:351:35:247:4123:43
7:38
+0:04
Half
13.11 mi12:10:461:40:357:405:11
7:36
-0:02
25K
15.53 mi12:29:161:59:057:4018:30
7:38
+0:02
30K
18.64 mi12:54:402:24:297:4525:24
8:11
+0:33
20M
20.00 mi13:06:012:35:507:4711:21
8:21
+0:10
21M
21.00 mi13:15:052:44:547:519:04
9:04
+0:43
35K
21.75 mi13:21:182:51:077:526:13
8:19
-0:45
23M
23.00 mi13:32:043:01:537:5410:46
8:36
+0:17
24M
24.00 mi13:40:353:10:247:568:31
8:31
-0:05
40K
24.85 mi13:47:513:17:407:577:16
8:30
-0:01
25.2M
25.20 mi13:50:583:20:477:583:07
9:02
+0:32
Finish
26.22 mi13:59:183:29:077:598:20
8:11
-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

7:34 /mi

Average Pace

7:59 /mi

Slowest Pace

9:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:39:02

76% of race

Time at Steady Pace

37:54

18% of race

Time at Slower Pace

12:11

6% of race

Average Pace: 7:59 /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 mi10:54:1724:067:4524:06
7:45
#11994
10K
6.21 mi11:18:2348:127:4524:06
7:45
#12343
15K
9.32 mi11:41:521:11:417:4123:29
7:34
#11712
20K
12.43 mi12:05:351:35:247:4123:43
7:38
#11323
Half
13.11 mi12:10:461:40:357:405:11
7:36
#11303
25K
15.53 mi12:29:161:59:057:4018:30
7:38
#11031
30K
18.64 mi12:54:402:24:297:4525:24
8:11
#11175
20M
20.00 mi13:06:012:35:507:4711:21
8:21
#11294
21M
21.00 mi13:15:052:44:547:519:04
9:04
#11447
35K
21.75 mi13:21:182:51:077:526:13
8:19
#11568
23M
23.00 mi13:32:043:01:537:5410:46
8:36
#11715
24M
24.00 mi13:40:353:10:247:568:31
8:31
#11860
40K
24.85 mi13:47:513:17:407:577:16
8:30
#11915
25.2M
25.20 mi13:50:583:20:477:583:07
9:02
#11929
Finish
26.22 mi13:59:183:29:077:598:20
8:11
#11990
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi119942866286610672(Top 40%)2173(Top 19%)2173(Top 44%)
10K6.21 mi3.10 mi12343-3493067-2013067-20112747(Top 48%)3280(Top 29%)3280(Top 67%)
15K9.32 mi3.11 mi11712+6312735+3322735+33210672(Top 40%)2173(Top 19%)2173(Top 44%)
20K12.43 mi3.11 mi11323+3892515+2202515+22010384(Top 39%)2093(Top 18%)2093(Top 43%)
Half13.11 mi0.68 mi11303+202503+122503+1211086(Top 42%)2428(Top 21%)2428(Top 50%)
25K15.53 mi2.42 mi11031+2722373+1302373+1309804(Top 37%)1923(Top 17%)1923(Top 39%)
30K18.64 mi3.11 mi11175-1442516-1432516-14312167(Top 46%)3281(Top 29%)3281(Top 67%)
20M20.00 mi1.36 mi11294-1192597-812597-8112713(Top 48%)3684(Top 32%)3684(Top 75%)
21M21.00 mi1.00 mi11447-1532696-992696-9913799(Top 52%)4377(Top 38%)4377(Top 90%)
35K21.75 mi0.75 mi11568-1212786-902786-9014153(Top 53%)4633(Top 41%)4633(Top 95%)
23M23.00 mi1.25 mi11715-1472886-1002886-10013788(Top 52%)4493(Top 39%)4493(Top 92%)
24M24.00 mi1.00 mi11860-1452987-1012987-10114567(Top 55%)4989(Top 44%)4989(Top 102%)
40K24.85 mi0.85 mi11915-553051-643051-6413341(Top 50%)4377(Top 38%)4377(Top 90%)
25.2M25.20 mi0.35 mi11929-143063-123063-1212767(Top 48%)4100(Top 36%)4100(Top 84%)
Finish26.22 mi1.02 mi11990-613119-563119-5613294(Top 50%)4353(Top 38%)4353(Top 89%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21story building
+97ft-345ft

Overall

10672

Females

2173

F18-39

2173

5K→10K

3.1 - 6.2 mi

Top 48%
×5story building
+79ft-138ft

Overall

12747

Females

3280

F18-39

3280

10K→15K

6.2 - 9.3 mi

Top 40%
×3story building
+67ft-78ft

Overall

10672

Females

2173

F18-39

2173

15K→20K

9.3 - 12.4 mi

Top 39%
×5story building
+106ft-86ft

Overall

10384

Females

2093

F18-39

2093

20K→Half

12.4 - 13.1 mi

Top 42%
×2story building
+19ft-37ft

Overall

11086

Females

2428

F18-39

2428

Half→25K

13.1 - 15.5 mi

Top 37%
×4story building
+66ft-88ft

Overall

9804

Females

1923

F18-39

1923

25K→30K

15.5 - 18.6 mi

Top 46%
×9story building
+181ft-148ft

Overall

12167

Females

3281

F18-39

3281

30K→20M

18.6 - 20.0 mi

Top 48%
×5story building
+64ft-50ft

Overall

12713

Females

3684

F18-39

3684

20M→21M

20.0 - 21.0 mi

Top 52%
×8story building
+106ft-24ft

Overall

13799

Females

4377

F18-39

4377

21M→35K

21.0 - 21.8 mi

Top 53%
×7story building
+17ft-86ft

Overall

14153

Females

4633

F18-39

4633

35K→23M

21.8 - 23.0 mi

Top 52%
×5story building
+23ft-63ft

Overall

13788

Females

4493

F18-39

4493

23M→24M

23.0 - 24.0 mi

Top 55%
×6story building
+12ft-82ft

Overall

14567

Females

4989

F18-39

4989

24M→40K

24.0 - 24.9 mi

Top 50%
×1story
+6ft-20ft

Overall

13341

Females

4377

F18-39

4377

40K→25.2M

24.9 - 25.2 mi

Top 48%
×1story
+13ft-16ft

Overall

12767

Females

4100

F18-39

4100

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2story building
+22ft-21ft

Overall

13294

Females

4353

F18-39

4353

Passing Analysis

Category:
Athletes Passed
2021
Passed By
2017
Net Change
+4
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11994
5K → 10K169518-349#11994#12343
10K → 15K65322+631#12343#11712
15K → 20K40920+389#11712#11323
20K → Half3818+20#11323#11303
Half → 25K28816+272#11303#11031
25K → 30K139283-144#11031#11175
30K → 20M54173-119#11175#11294
20M → 21M45198-153#11294#11447
21M → 35K20141-121#11447#11568
35K → 23M54201-147#11568#11715
23M → 24M29174-145#11715#11860
24M → 40K46101-55#11860#11915
40K → 25.2M2438-14#11915#11929
25.2M → Finish53114-61#11929#11990
TOTALS20212017+4
📊

Passing Visuals

Category:
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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