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BOSTON MARATHON 2023

Emma Smith

Bib: 17731 F GB

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 43%
Gender (Female)
#0 / 11423
Top 24%
Division (F18-39)
#0 / 4884
Top 41%
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
7:59/mi
24:48
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:42/mi
48:42
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:39/mi
1:12:27
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:46/mi
1:36:36
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:39/mi
1:41:49
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:43/mi
2:00:32
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:00/mi
2:25:24
↑ 181↓ 1480.2%
138 ft elev
20M
8:00/mi
2:36:16
↑ 64↓ 500.2%
148 ft elev
21M
8:31/mi
2:44:47
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:41/mi
2:50:32
↑ 17↓ 861.7%
156 ft elev
23M
8:09/mi
3:00:44
↑ 23↓ 630.6%
116 ft elev
24M
8:09/mi
3:08:53
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:29/mi
3:16:08
↓ 200.3%
20 ft elev
25.2M
8:51/mi
3:19:11
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:46/mi
3:27:06
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:41:497:46 /mi⚡ faster
2nd Half
1:45:178:02 /mi+3.4%
Positive split — 3.4% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
24:487:593.11 mi24:48
7:59
-
10K
48:427:503.10 mi23:54
7:42
-0:17
15K
1:12:277:463.11 mi23:45
7:39
-0:03
20K
1:36:367:463.11 mi24:09
7:46
+0:07
Half(13.11 mi)
1:41:497:460.68 mi5:13
7:39
-0:07
25K
2:00:327:462.42 mi18:43
7:43
+0:04
30K
2:25:247:483.11 mi24:52
8:00
+0:17
20M
2:36:167:491.36 mi10:52
8:00
0:00
21M
2:44:477:511.00 mi8:31
8:31
+0:31
35K
2:50:327:500.75 mi5:45
7:41
-0:50
23M
3:00:447:511.25 mi10:12
8:09
+0:28
24M
3:08:537:521.00 mi8:09
8:09
0:00
40K
3:16:087:530.85 mi7:15
8:29
+0:20
25.2M
3:19:117:540.35 mi3:03
8:51
+0:22
Finish(26.22 mi)
3:27:067:541.02 mi7:55
7:46
-1:05
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

7:39 /mi

Average Pace

7:54 /mi

Slowest Pace

8:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

3:08:17

91% of race

Time at Steady Pace

18:49

9% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:54 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi13894395839581138325592559
10K3.10 mi13055+8393476+4823476+4821217529682968
15K3.11 mi12441+6143140+3363140+3361138325592559
20K3.11 mi12150+2913010+1303010+1301151626912691
Half(13.11 mi)0.68 mi12112+382984+262984+261147426152615
25K2.42 mi11802+3102811+1732811+1731046922162216
30K3.11 mi11613+1892758+532758+531095426152615
20M1.36 mi11481+1322706+522706+521026923622362
21M1.00 mi11391+902667+392667+391060026732673
35K0.75 mi11318+732637+302637+30988623112311
23M1.25 mi11281+372648-112648-111082529272927
24M1.00 mi11327-462694-462694-461226537253725
40K0.85 mi11408-812762-682762-681320643044304
25.2M0.35 mi11406+22775-132775-131161935153515
Finish(26.22 mi)1.02 mi11328+782755+202755+201047329262926

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 43%
×21story building
+97ft-345ft

Overall

11383

Females

2559

F18-39

2559

5K→10K

3.1 - 6.2 mi

Top 46%
×5story building
+79ft-138ft

Overall

12175

Females

2968

F18-39

2968

10K→15K

6.2 - 9.3 mi

Top 43%
×3story building
+67ft-78ft

Overall

11383

Females

2559

F18-39

2559

15K→20K

9.3 - 12.4 mi

Top 43%
×5story building
+106ft-86ft

Overall

11516

Females

2691

F18-39

2691

20K→Half

12.4 - 13.1 mi

Top 43%
×2story building
+19ft-37ft

Overall

11474

Females

2615

F18-39

2615

Half→25K

13.1 - 15.5 mi

Top 39%
×4story building
+66ft-88ft

Overall

10469

Females

2216

F18-39

2216

25K→30K

15.5 - 18.6 mi

Top 41%
×9story building
+181ft-148ft

Overall

10954

Females

2615

F18-39

2615

30K→20M

18.6 - 20.0 mi

Top 39%
×5story building
+64ft-50ft

Overall

10269

Females

2362

F18-39

2362

20M→21M

20.0 - 21.0 mi

Top 40%
×8story building
+106ft-24ft

Overall

10600

Females

2673

F18-39

2673

21M→35K

21.0 - 21.8 mi

Top 37%
×7story building
+17ft-86ft

Overall

9886

Females

2311

F18-39

2311

35K→23M

21.8 - 23.0 mi

Top 41%
×5story building
+23ft-63ft

Overall

10825

Females

2927

F18-39

2927

23M→24M

23.0 - 24.0 mi

Top 46%
×6story building
+12ft-82ft

Overall

12265

Females

3725

F18-39

3725

24M→40K

24.0 - 24.9 mi

Top 50%
×1story
+6ft-20ft

Overall

13206

Females

4304

F18-39

4304

40K→25.2M

24.9 - 25.2 mi

Top 44%
×1story
+13ft-16ft

Overall

11619

Females

3515

F18-39

3515

25.2M→Finish

25.2 - 26.2 mi

Top 39%
×2story building
+22ft-21ft

Overall

10473

Females

2926

F18-39

2926

Passing Analysis

Category:
Passed
3287
Passed By
721
Net Change
+2566
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13894
5K → 10K90869+839#13894#13055
10K → 15K65238+614#13055#12441
15K → 20K34150+291#12441#12150
20K → Half5214+38#12150#12112
Half → 25K32414+310#12112#11802
25K → 30K27586+189#11802#11613
30K → 20M16432+132#11613#11481
20M → 21M13848+90#11481#11391
21M → 35K9522+73#11391#11318
35K → 23M10467+37#11318#11281
23M → 24M4490-46#11281#11327
24M → 40K42123-81#11327#11408
40K → 25.2M3634+2#11408#11406
25.2M → Finish11234+78#11406#11328
TOTALS3287721+2566

Passing Charts

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