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BOSTON MARATHON 2023

Sierra Scanlan

Bib: 9633•F

CO

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
22:08
Rank: #7044
Start → 5K
22:08 | 7:07/mi
10K· 6.21 mi
43:46
Rank: #6759 (+285)
5K → 10K
21:38 | 6:58/mi
15K· 9.32 mi
1:04:53
Rank: #6267 (+492)
10K → 15K
21:07 | 6:48/mi
20K· 12.43 mi
1:26:17
Rank: #6004 (+263)
15K → 20K
21:24 | 6:53/mi
Half· 13.11 mi
1:30:51
Rank: #5930 (+74)
20K → Half
4:34 | 6:42/mi
25K· 15.53 mi
1:47:50
Rank: #5853 (+77)
Half → 25K
16:59 | 7:00/mi
30K· 18.64 mi
2:10:21
Rank: #5763 (+90)
25K → 30K
22:31 | 7:15/mi
20M
2:20:23
Rank: #5765 (-2)
30K → 20M
10:02 | 7:23/mi
21M
2:28:16
Rank: #5768 (-3)
20M → 21M
7:53 | 7:53/mi
35K· 21.75 mi
2:33:35
Rank: #5762 (+6)
21M → 35K
5:19 | 7:06/mi
23M
2:42:53
Rank: #5707 (+55)
35K → 23M
9:18 | 7:26/mi
24M
2:50:09
Rank: #5671 (+36)
23M → 24M
7:16 | 7:16/mi
40K· 24.85 mi
2:56:24
Rank: #5623 (+48)
24M → 40K
6:15 | 7:19/mi
25.2M
2:59:09
Rank: #5610 (+13)
40K → 25.2M
2:45 | 7:58/mi
Finish· 26.22 mi
3:06:48
Rank: #5651 (-41)
25.2M → Finish
7:39 | 7:30/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:51
Pace6:56 /mi
2nd Half
Distance13.11 mi
Time1:35:57
Pace7:19 /mi
📊Positive Split: 5.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:3522:087:0722:08
7:07
-
10K
6.21 mi11:09:1343:467:0321:38
6:58
-0:09
15K
9.32 mi11:30:201:04:536:5821:07
6:48
-0:10
20K
12.43 mi11:51:441:26:176:5721:24
6:53
+0:05
Half
13.11 mi11:56:181:30:516:564:34
6:42
-0:11
25K
15.53 mi12:13:171:47:506:5616:59
7:00
+0:18
30K
18.64 mi12:35:482:10:217:0022:31
7:15
+0:15
20M
20.00 mi12:45:502:20:237:0110:02
7:23
+0:08
21M
21.00 mi12:53:432:28:167:047:53
7:53
+0:30
35K
21.75 mi12:59:022:33:357:045:19
7:06
-0:47
23M
23.00 mi13:08:202:42:537:059:18
7:26
+0:20
24M
24.00 mi13:15:362:50:097:057:16
7:16
-0:10
40K
24.85 mi13:21:512:56:247:066:15
7:19
+0:03
25.2M
25.20 mi13:24:362:59:097:072:45
7:58
+0:39
Finish
26.22 mi13:32:153:06:487:087:39
7:30
-0:28

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

6:42 /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

2:29:11

80% of race

Time at Steady Pace

34:52

19% of race

Time at Slower Pace

2:45

1% of race

Average Pace: 7:07 /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 mi10:47:3522:087:0722:08
7:07
#7044
10K
6.21 mi11:09:1343:467:0321:38
6:58
#6759
15K
9.32 mi11:30:201:04:536:5821:07
6:48
#6267
20K
12.43 mi11:51:441:26:176:5721:24
6:53
#6004
Half
13.11 mi11:56:181:30:516:564:34
6:42
#5930
25K
15.53 mi12:13:171:47:506:5616:59
7:00
#5853
30K
18.64 mi12:35:482:10:217:0022:31
7:15
#5763
20M
20.00 mi12:45:502:20:237:0110:02
7:23
#5765
21M
21.00 mi12:53:432:28:167:047:53
7:53
#5768
35K
21.75 mi12:59:022:33:357:045:19
7:06
#5762
23M
23.00 mi13:08:202:42:537:059:18
7:26
#5707
24M
24.00 mi13:15:362:50:097:057:16
7:16
#5671
40K
24.85 mi13:21:512:56:247:066:15
7:19
#5623
25.2M
25.20 mi13:24:362:59:097:072:45
7:58
#5610
Finish
26.22 mi13:32:153:06:487:087:39
7:30
#5651
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi70447287285111(Top 19%)377(Top 3%)377(Top 8%)
10K6.21 mi3.10 mi6759+285667+61667+616584(Top 25%)656(Top 6%)656(Top 13%)
15K9.32 mi3.11 mi6267+492572+95572+955111(Top 19%)377(Top 3%)377(Top 8%)
20K12.43 mi3.11 mi6004+263520+52520+525277(Top 20%)401(Top 4%)401(Top 8%)
Half13.11 mi0.68 mi5930+74501+19501+194392(Top 16%)301(Top 3%)301(Top 6%)
25K15.53 mi2.42 mi5853+77483+18483+185621(Top 21%)461(Top 4%)461(Top 9%)
30K18.64 mi3.11 mi5763+90474+9474+95769(Top 22%)569(Top 5%)569(Top 12%)
20M20.00 mi1.36 mi5765-2488-14488-146110(Top 23%)724(Top 6%)724(Top 15%)
21M21.00 mi1.00 mi5768-3498-10498-106655(Top 25%)998(Top 9%)998(Top 20%)
35K21.75 mi0.75 mi5762+6500-2500-25980(Top 22%)750(Top 7%)750(Top 15%)
23M23.00 mi1.25 mi5707+55507-7507-76040(Top 23%)823(Top 7%)823(Top 17%)
24M24.00 mi1.00 mi5671+36508-1508-16165(Top 23%)957(Top 8%)957(Top 20%)
40K24.85 mi0.85 mi5623+48505+3505+35539(Top 21%)815(Top 7%)815(Top 17%)
25.2M25.20 mi0.35 mi5610+13510-5510-56381(Top 24%)1165(Top 10%)1165(Top 24%)
Finish26.22 mi1.02 mi5651-41534-24534-248612(Top 32%)2062(Top 18%)2062(Top 42%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21stories
+97ft-345ft

Overall

5111

Females

377

F18-39

377

5K→10K

3.1 - 6.2 mi

Top 25%
×5stories
+79ft-138ft

Overall

6584

Females

656

F18-39

656

10K→15K

6.2 - 9.3 mi

Top 19%
×3stories
+67ft-78ft

Overall

5111

Females

377

F18-39

377

15K→20K

9.3 - 12.4 mi

Top 20%
×5stories
+106ft-86ft

Overall

5277

Females

401

F18-39

401

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

4392

Females

301

F18-39

301

Half→25K

13.1 - 15.5 mi

Top 21%
×4stories
+66ft-88ft

Overall

5621

Females

461

F18-39

461

25K→30K

15.5 - 18.6 mi

Top 22%
×9stories
+181ft-148ft

Overall

5769

Females

569

F18-39

569

30K→20M

18.6 - 20.0 mi

Top 23%
×5stories
+64ft-50ft

Overall

6110

Females

724

F18-39

724

20M→21M

20.0 - 21.0 mi

Top 25%
×8stories
+106ft-24ft

Overall

6655

Females

998

F18-39

998

21M→35K

21.0 - 21.8 mi

Top 22%
×7stories
+17ft-86ft

Overall

5980

Females

750

F18-39

750

35K→23M

21.8 - 23.0 mi

Top 23%
×5stories
+23ft-63ft

Overall

6040

Females

823

F18-39

823

23M→24M

23.0 - 24.0 mi

Top 23%
×6stories
+12ft-82ft

Overall

6165

Females

957

F18-39

957

24M→40K

24.0 - 24.9 mi

Top 21%
×1story
+6ft-20ft

Overall

5539

Females

815

F18-39

815

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6381

Females

1165

F18-39

1165

25.2M→Finish

25.2 - 26.2 mi

Top 32%
×2stories
+22ft-21ft

Overall

8612

Females

2062

F18-39

2062

Passing Analysis

Category:
Athletes Passed
1952
Passed By
559
Net Change
+1393
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7044
5K → 10K37287+285#7044#6759
10K → 15K4964+492#6759#6267
15K → 20K27310+263#6267#6004
20K → Half740+74#6004#5930
Half → 25K12043+77#5930#5853
25K → 30K16272+90#5853#5763
30K → 20M6163-2#5763#5765
20M → 21M5962-3#5765#5768
21M → 35K3226+6#5768#5762
35K → 23M9338+55#5762#5707
23M → 24M6731+36#5707#5671
24M → 40K6921+48#5671#5623
40K → 25.2M2916+13#5623#5610
25.2M → Finish4586-41#5610#5651
TOTALS1952559+1393
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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