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BOSTON MARATHON 2023

Emily Burch

Bib: 14308•F

GA

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

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
8:34/mi
26:37
↑ 97↓ 3451.5%
10K· 6.21 mi
8:21/mi
52:33
↑ 79↓ 1380.4%
15K· 9.32 mi
8:25/mi
1:18:41
↑ 67↓ 78
20K· 12.43 mi
8:37/mi
1:45:27
↑ 106↓ 860.1%
Half· 13.11 mi
8:34/mi
1:51:18
↑ 19↓ 370.5%
25K· 15.53 mi
8:40/mi
2:12:19
↑ 66↓ 880.2%
30K· 18.64 mi
8:50/mi
2:39:45
↑ 181↓ 1480.2%
20M
8:45/mi
2:51:38
↑ 64↓ 500.2%
21M
9:34/mi
3:01:12
↑ 106↓ 241.6%
35K· 21.75 mi
8:33/mi
3:07:36
↑ 17↓ 861.7%
23M
8:41/mi
3:18:28
↑ 23↓ 630.6%
24M
8:30/mi
3:26:58
↓ 821.3%
40K· 24.85 mi
9:21/mi
3:34:58
↓ 200.3%
25.2M
9:34/mi
3:38:16
↑ 13↓ 160.2%
Finish· 26.22 mi
8:35/mi
3:47:01
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:18
Pace8:29 /mi
2nd Half
Distance13.11 mi
Time1:55:43
Pace8:50 /mi
📊Positive Split: 4.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:1726:378:3426:37
8:34
-
10K
6.21 mi11:48:1352:338:2725:56
8:21
-0:13
15K
9.32 mi12:14:211:18:418:2726:08
8:25
+0:04
20K
12.43 mi12:41:071:45:278:2926:46
8:37
+0:12
Half
13.11 mi12:46:581:51:188:295:51
8:34
-0:03
25K
15.53 mi13:07:592:12:198:3121:01
8:40
+0:06
30K
18.64 mi13:35:252:39:458:3427:26
8:50
+0:10
20M
20.00 mi13:47:182:51:388:3511:53
8:45
-0:05
21M
21.00 mi13:56:523:01:128:389:34
9:34
+0:49
35K
21.75 mi14:03:163:07:368:386:24
8:33
-1:01
23M
23.00 mi14:14:083:18:288:3810:52
8:41
+0:08
24M
24.00 mi14:22:383:26:588:378:30
8:30
-0:11
40K
24.85 mi14:30:383:34:588:398:00
9:21
+0:51
25.2M
25.20 mi14:33:563:38:168:403:18
9:34
+0:13
Finish
26.22 mi14:42:413:47:018:408:45
8:35
-0:59

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

8:21 /mi

Average Pace

8:40 /mi

Slowest Pace

9:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:26:09

91% of race

Time at Steady Pace

20:52

9% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:39 /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 mi11:22:1726:378:3426:37
8:34
#18026
10K
6.21 mi11:48:1352:338:2725:56
8:21
#17615
15K
9.32 mi12:14:211:18:418:2726:08
8:25
#17476
20K
12.43 mi12:41:071:45:278:2926:46
8:37
#17460
Half
13.11 mi12:46:581:51:188:295:51
8:34
#17498
25K
15.53 mi13:07:592:12:198:3121:01
8:40
#17437
30K
18.64 mi13:35:252:39:458:3427:26
8:50
#17177
20M
20.00 mi13:47:182:51:388:3511:53
8:45
#17011
21M
21.00 mi13:56:523:01:128:389:34
9:34
#16958
35K
21.75 mi14:03:163:07:368:386:24
8:33
#16914
23M
23.00 mi14:14:083:18:288:3810:52
8:41
#16760
24M
24.00 mi14:22:383:26:588:378:30
8:30
#16649
40K
24.85 mi14:30:383:34:588:398:00
9:21
#16707
25.2M
25.20 mi14:33:563:38:168:403:18
9:34
#16670
Finish
26.22 mi14:42:413:47:018:408:45
8:35
#16626
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi180266573657317231(Top 65%)6062(Top 53%)6062(Top 124%)
10K6.21 mi3.10 mi17615+4116297+2766297+27617233(Top 65%)6022(Top 53%)6022(Top 123%)
15K9.32 mi3.11 mi17476+1396205+926205+9217231(Top 65%)6062(Top 53%)6062(Top 124%)
20K12.43 mi3.11 mi17460+166193+126193+1217593(Top 66%)6281(Top 55%)6281(Top 129%)
Half13.11 mi0.68 mi17498-386222-296222-2918190(Top 68%)6585(Top 58%)6585(Top 135%)
25K15.53 mi2.42 mi17437+616201+216201+2117214(Top 65%)6123(Top 54%)6123(Top 125%)
30K18.64 mi3.11 mi17177+2606064+1376064+13716253(Top 61%)5644(Top 49%)5644(Top 116%)
20M20.00 mi1.36 mi17011+1665978+865978+8615154(Top 57%)5093(Top 45%)5093(Top 104%)
21M21.00 mi1.00 mi16958+535963+155963+1516293(Top 61%)5795(Top 51%)5795(Top 119%)
35K21.75 mi0.75 mi16914+445940+235940+2315633(Top 59%)5492(Top 48%)5492(Top 112%)
23M23.00 mi1.25 mi16760+1545878+625878+6214292(Top 54%)4792(Top 42%)4792(Top 98%)
24M24.00 mi1.00 mi16649+1115832+465832+4614511(Top 55%)4968(Top 43%)4968(Top 102%)
40K24.85 mi0.85 mi16707-585884-525884-5217790(Top 67%)6831(Top 60%)6831(Top 140%)
25.2M25.20 mi0.35 mi16670+375871+135871+1315572(Top 58%)5633(Top 49%)5633(Top 115%)
Finish26.22 mi1.02 mi16626+445854+175854+1715940(Top 60%)5775(Top 51%)5775(Top 118%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21story building
+97ft-345ft

Overall

17231

Females

6062

F18-39

6062

5K→10K

3.1 - 6.2 mi

Top 65%
×5story building
+79ft-138ft

Overall

17233

Females

6022

F18-39

6022

10K→15K

6.2 - 9.3 mi

Top 65%
×3story building
+67ft-78ft

Overall

17231

Females

6062

F18-39

6062

15K→20K

9.3 - 12.4 mi

Top 66%
×5story building
+106ft-86ft

Overall

17593

Females

6281

F18-39

6281

20K→Half

12.4 - 13.1 mi

Top 68%
×2story building
+19ft-37ft

Overall

18190

Females

6585

F18-39

6585

Half→25K

13.1 - 15.5 mi

Top 65%
×4story building
+66ft-88ft

Overall

17214

Females

6123

F18-39

6123

25K→30K

15.5 - 18.6 mi

Top 61%
×9story building
+181ft-148ft

Overall

16253

Females

5644

F18-39

5644

30K→20M

18.6 - 20.0 mi

Top 57%
×5story building
+64ft-50ft

Overall

15154

Females

5093

F18-39

5093

20M→21M

20.0 - 21.0 mi

Top 61%
×8story building
+106ft-24ft

Overall

16293

Females

5795

F18-39

5795

21M→35K

21.0 - 21.8 mi

Top 59%
×7story building
+17ft-86ft

Overall

15633

Females

5492

F18-39

5492

35K→23M

21.8 - 23.0 mi

Top 54%
×5story building
+23ft-63ft

Overall

14292

Females

4792

F18-39

4792

23M→24M

23.0 - 24.0 mi

Top 55%
×6story building
+12ft-82ft

Overall

14511

Females

4968

F18-39

4968

24M→40K

24.0 - 24.9 mi

Top 67%
×1story
+6ft-20ft

Overall

17790

Females

6831

F18-39

6831

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

15572

Females

5633

F18-39

5633

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2story building
+22ft-21ft

Overall

15940

Females

5775

F18-39

5775

Passing Analysis

Category:
Athletes Passed
2339
Passed By
939
Net Change
+1400
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18026
5K → 10K577166+411#18026#17615
10K → 15K274135+139#17615#17476
15K → 20K180164+16#17476#17460
20K → Half2058-38#17460#17498
Half → 25K15897+61#17498#17437
25K → 30K31151+260#17437#17177
30K → 20M18115+166#17177#17011
20M → 21M10552+53#17011#16958
21M → 35K6723+44#16958#16914
35K → 23M17319+154#16914#16760
23M → 24M12918+111#16760#16649
24M → 40K3896-58#16649#16707
40K → 25.2M5013+37#16707#16670
25.2M → Finish7632+44#16670#16626
TOTALS2339939+1400
📊

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