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BOSTON MARATHON 2023

Julia Smith

Bib: 15476•F

WI

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 29%
Gender (Female)
#0 / 11423
Top 10%
Division (F18-39)
#0 / 4884
Top 19%
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
7:31/mi
23:20
↑ 97↓ 3451.5%
10K· 6.21 mi
7:25/mi
46:22
↑ 79↓ 1380.4%
15K· 9.32 mi
7:20/mi
1:09:10
↑ 67↓ 78
20K· 12.43 mi
7:22/mi
1:32:03
↑ 106↓ 860.1%
Half· 13.11 mi
7:21/mi
1:37:04
↑ 19↓ 370.5%
25K· 15.53 mi
7:23/mi
1:54:58
↑ 66↓ 880.2%
30K· 18.64 mi
7:28/mi
2:18:11
↑ 181↓ 1480.2%
20M
7:35/mi
2:28:29
↑ 64↓ 500.2%
21M
7:48/mi
2:36:17
↑ 106↓ 241.6%
35K· 21.75 mi
7:37/mi
2:41:59
↑ 17↓ 861.7%
23M
7:29/mi
2:51:21
↑ 23↓ 630.6%
24M
7:21/mi
2:58:42
↓ 821.3%
40K· 24.85 mi
7:33/mi
3:05:09
↓ 200.3%
25.2M
8:01/mi
3:07:55
↑ 13↓ 160.2%
Finish· 26.22 mi
7:09/mi
3:15:12
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:04
Pace7:24 /mi
2nd Half
Distance13.11 mi
Time1:38:08
Pace7:29 /mi
📊Positive Split: 1.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:1623:207:3123:20
7:31
-
10K
6.21 mi11:16:1846:227:2823:02
7:25
-0:06
15K
9.32 mi11:39:061:09:107:2522:48
7:20
-0:05
20K
12.43 mi12:01:591:32:037:2422:53
7:22
+0:02
Half
13.11 mi12:07:001:37:047:245:01
7:21
-0:01
25K
15.53 mi12:24:541:54:587:2417:54
7:23
+0:02
30K
18.64 mi12:48:072:18:117:2523:13
7:28
+0:05
20M
20.00 mi12:58:252:28:297:2510:18
7:35
+0:07
21M
21.00 mi13:06:132:36:177:277:48
7:48
+0:13
35K
21.75 mi13:11:552:41:597:275:42
7:37
-0:11
23M
23.00 mi13:21:172:51:217:279:22
7:29
-0:08
24M
24.00 mi13:28:382:58:427:277:21
7:21
-0:08
40K
24.85 mi13:35:053:05:097:276:27
7:33
+0:12
25.2M
25.20 mi13:37:513:07:557:272:46
8:01
+0:28
Finish
26.22 mi13:45:083:15:127:277:17
7:09
-0:52

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

7:09 /mi

Average Pace

7:27 /mi

Slowest Pace

8:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:12:26

99% of race

Time at Steady Pace

2:46

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:27 /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 mi10:53:1623:207:3123:20
7:31
#9722
10K
6.21 mi11:16:1846:227:2823:02
7:25
#9684
15K
9.32 mi11:39:061:09:107:2522:48
7:20
#9363
20K
12.43 mi12:01:591:32:037:2422:53
7:22
#9055
Half
13.11 mi12:07:001:37:047:245:01
7:21
#9052
25K
15.53 mi12:24:541:54:587:2417:54
7:23
#8844
30K
18.64 mi12:48:072:18:117:2523:13
7:28
#8459
20M
20.00 mi12:58:252:28:297:2510:18
7:35
#8346
21M
21.00 mi13:06:132:36:177:277:48
7:48
#8220
35K
21.75 mi13:11:552:41:597:275:42
7:37
#8233
23M
23.00 mi13:21:172:51:217:279:22
7:29
#8082
24M
24.00 mi13:28:382:58:427:277:21
7:21
#7983
40K
24.85 mi13:35:053:05:097:276:27
7:33
#7916
25.2M
25.20 mi13:37:513:07:557:272:46
8:01
#7888
Finish
26.22 mi13:45:083:15:127:277:17
7:09
#7795
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi9722171617168873(Top 33%)1396(Top 12%)1396(Top 29%)
10K6.21 mi3.10 mi9684+381696+201696+209757(Top 37%)1708(Top 15%)1708(Top 35%)
15K9.32 mi3.11 mi9363+3211563+1331563+1338873(Top 33%)1396(Top 12%)1396(Top 29%)
20K12.43 mi3.11 mi9055+3081460+1031460+1038270(Top 31%)1205(Top 11%)1205(Top 25%)
Half13.11 mi0.68 mi9052+31464-41464-49063(Top 34%)1487(Top 13%)1487(Top 30%)
25K15.53 mi2.42 mi8844+2081388+761388+767892(Top 30%)1150(Top 10%)1150(Top 24%)
30K18.64 mi3.11 mi8459+3851287+1011287+1017054(Top 26%)944(Top 8%)944(Top 19%)
20M20.00 mi1.36 mi8346+1131272+151272+157378(Top 28%)1171(Top 10%)1171(Top 24%)
21M21.00 mi1.00 mi8220+1261236+361236+366204(Top 23%)858(Top 8%)858(Top 18%)
35K21.75 mi0.75 mi8233-131252-161252-169414(Top 35%)2091(Top 18%)2091(Top 43%)
23M23.00 mi1.25 mi8082+1511218+341218+346341(Top 24%)937(Top 8%)937(Top 19%)
24M24.00 mi1.00 mi7983+991199+191199+196748(Top 25%)1170(Top 10%)1170(Top 24%)
40K24.85 mi0.85 mi7916+671192+71192+76999(Top 26%)1360(Top 12%)1360(Top 28%)
25.2M25.20 mi0.35 mi7888+281186+61186+66713(Top 25%)1299(Top 11%)1299(Top 27%)
Finish26.22 mi1.02 mi7795+931175+111175+116124(Top 23%)1106(Top 10%)1106(Top 23%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21story building
+97ft-345ft

Overall

8873

Females

1396

F18-39

1396

5K→10K

3.1 - 6.2 mi

Top 37%
×5story building
+79ft-138ft

Overall

9757

Females

1708

F18-39

1708

10K→15K

6.2 - 9.3 mi

Top 33%
×3story building
+67ft-78ft

Overall

8873

Females

1396

F18-39

1396

15K→20K

9.3 - 12.4 mi

Top 31%
×5story building
+106ft-86ft

Overall

8270

Females

1205

F18-39

1205

20K→Half

12.4 - 13.1 mi

Top 34%
×2story building
+19ft-37ft

Overall

9063

Females

1487

F18-39

1487

Half→25K

13.1 - 15.5 mi

Top 30%
×4story building
+66ft-88ft

Overall

7892

Females

1150

F18-39

1150

25K→30K

15.5 - 18.6 mi

Top 26%
×9story building
+181ft-148ft

Overall

7054

Females

944

F18-39

944

30K→20M

18.6 - 20.0 mi

Top 28%
×5story building
+64ft-50ft

Overall

7378

Females

1171

F18-39

1171

20M→21M

20.0 - 21.0 mi

Top 23%
×8story building
+106ft-24ft

Overall

6204

Females

858

F18-39

858

21M→35K

21.0 - 21.8 mi

Top 35%
×7story building
+17ft-86ft

Overall

9414

Females

2091

F18-39

2091

35K→23M

21.8 - 23.0 mi

Top 24%
×5story building
+23ft-63ft

Overall

6341

Females

937

F18-39

937

23M→24M

23.0 - 24.0 mi

Top 25%
×6story building
+12ft-82ft

Overall

6748

Females

1170

F18-39

1170

24M→40K

24.0 - 24.9 mi

Top 26%
×1story
+6ft-20ft

Overall

6999

Females

1360

F18-39

1360

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

6713

Females

1299

F18-39

1299

25.2M→Finish

25.2 - 26.2 mi

Top 23%
×2story building
+22ft-21ft

Overall

6124

Females

1106

F18-39

1106

Passing Analysis

Category:
Athletes Passed
2513
Passed By
586
Net Change
+1927
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9722
5K → 10K323285+38#9722#9684
10K → 15K36140+321#9684#9363
15K → 20K33426+308#9363#9055
20K → Half2825+3#9055#9052
Half → 25K22113+208#9052#8844
25K → 30K40217+385#8844#8459
30K → 20M13825+113#8459#8346
20M → 21M14418+126#8346#8220
21M → 35K4053-13#8220#8233
35K → 23M16918+151#8233#8082
23M → 24M11415+99#8082#7983
24M → 40K8922+67#7983#7916
40K → 25.2M379+28#7916#7888
25.2M → Finish11320+93#7888#7795
TOTALS2513586+1927
📊

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