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BOSTON MARATHON 2023

Sandra Cottreau

Bib: 9415•F

PE

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 21%
Gender (Female)
#0 / 11423
Top 4%
Division (F18-39)
#0 / 4884
Top 8%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:44
Rank: #6235
Start → 5K
21:44 | 7:00/mi
10K· 6.21 mi
43:30
Rank: #6507 (-272)
5K → 10K
21:46 | 7:00/mi
15K· 9.32 mi
1:05:10
Rank: #6463 (+44)
10K → 15K
21:40 | 6:58/mi
20K· 12.43 mi
1:27:27
Rank: #6558 (-95)
15K → 20K
22:17 | 7:10/mi
Half· 13.11 mi
1:32:21
Rank: #6623 (-65)
20K → Half
4:54 | 7:11/mi
25K· 15.53 mi
1:49:52
Rank: #6631 (-8)
Half → 25K
17:31 | 7:13/mi
30K· 18.64 mi
2:12:31
Rank: #6450 (+181)
25K → 30K
22:39 | 7:17/mi
20M
2:22:14
Rank: #6302 (+148)
30K → 20M
9:43 | 7:09/mi
21M
2:29:39
Rank: #6143 (+159)
20M → 21M
7:25 | 7:25/mi
35K· 21.75 mi
2:34:36
Rank: #6011 (+132)
21M → 35K
4:57 | 6:37/mi
23M
2:43:21
Rank: #5830 (+181)
35K → 23M
8:45 | 6:59/mi
24M
2:50:15
Rank: #5703 (+127)
23M → 24M
6:54 | 6:54/mi
40K· 24.85 mi
2:56:18
Rank: #5604 (+99)
24M → 40K
6:03 | 7:05/mi
25.2M
2:58:58
Rank: #5574 (+30)
40K → 25.2M
2:40 | 7:44/mi
Finish· 26.22 mi
3:06:00
Rank: #5480 (+94)
25.2M → Finish
7:02 | 6:54/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:21
Pace7:03 /mi
2nd Half
Distance13.11 mi
Time1:33:39
Pace7:09 /mi
📊Positive Split: 1.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:2321:447:0021:44
7:00
-
10K
6.21 mi11:09:0943:307:0021:46
7:00
0:00
15K
9.32 mi11:30:491:05:107:0021:40
6:58
-0:02
20K
12.43 mi11:53:061:27:277:0222:17
7:10
+0:12
Half
13.11 mi11:58:001:32:217:034:54
7:11
+0:01
25K
15.53 mi12:15:311:49:527:0417:31
7:13
+0:02
30K
18.64 mi12:38:102:12:317:0722:39
7:17
+0:04
20M
20.00 mi12:47:532:22:147:079:43
7:09
-0:08
21M
21.00 mi12:55:182:29:397:087:25
7:25
+0:16
35K
21.75 mi13:00:152:34:367:074:57
6:37
-0:48
23M
23.00 mi13:09:002:43:217:068:45
6:59
+0:22
24M
24.00 mi13:15:542:50:157:066:54
6:54
-0:05
40K
24.85 mi13:21:572:56:187:066:03
7:05
+0:11
25.2M
25.20 mi13:24:372:58:587:062:40
7:44
+0:39
Finish
26.22 mi13:31:393:06:007:067:02
6:54
-0:50

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

6:37 /mi

Average Pace

7:06 /mi

Slowest Pace

7:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:33:16

82% of race

Time at Steady Pace

32:44

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:06 /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 mi10:47:2321:447:0021:44
7:00
#6235
10K
6.21 mi11:09:0943:307:0021:46
7:00
#6507
15K
9.32 mi11:30:491:05:107:0021:40
6:58
#6463
20K
12.43 mi11:53:061:27:277:0222:17
7:10
#6558
Half
13.11 mi11:58:001:32:217:034:54
7:11
#6623
25K
15.53 mi12:15:311:49:527:0417:31
7:13
#6631
30K
18.64 mi12:38:102:12:317:0722:39
7:17
#6450
20M
20.00 mi12:47:532:22:147:079:43
7:09
#6302
21M
21.00 mi12:55:182:29:397:087:25
7:25
#6143
35K
21.75 mi13:00:152:34:367:074:57
6:37
#6011
23M
23.00 mi13:09:002:43:217:068:45
6:59
#5830
24M
24.00 mi13:15:542:50:157:066:54
6:54
#5703
40K
24.85 mi13:21:572:56:187:066:03
7:05
#5604
25.2M
25.20 mi13:24:372:58:587:062:40
7:44
#5574
Finish
26.22 mi13:31:393:06:007:067:02
6:54
#5480
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi62355405406406(Top 24%)618(Top 5%)618(Top 13%)
10K6.21 mi3.10 mi6507-272623-83623-836870(Top 26%)719(Top 6%)719(Top 15%)
15K9.32 mi3.11 mi6463+44617+6617+66406(Top 24%)618(Top 5%)618(Top 13%)
20K12.43 mi3.11 mi6558-95643-26643-266929(Top 26%)762(Top 7%)762(Top 16%)
Half13.11 mi0.68 mi6623-65666-23666-237765(Top 29%)985(Top 9%)985(Top 20%)
25K15.53 mi2.42 mi6631-8668-2668-26828(Top 26%)789(Top 7%)789(Top 16%)
30K18.64 mi3.11 mi6450+181638+30638+305969(Top 22%)614(Top 5%)614(Top 13%)
20M20.00 mi1.36 mi6302+148615+23615+234892(Top 18%)437(Top 4%)437(Top 9%)
21M21.00 mi1.00 mi6143+159586+29586+294229(Top 16%)351(Top 3%)351(Top 7%)
35K21.75 mi0.75 mi6011+132564+22564+223164(Top 12%)211(Top 2%)211(Top 4%)
23M23.00 mi1.25 mi5830+181534+30534+303761(Top 14%)290(Top 3%)290(Top 6%)
24M24.00 mi1.00 mi5703+127514+20514+204202(Top 16%)378(Top 3%)378(Top 8%)
40K24.85 mi0.85 mi5604+99500+14500+144280(Top 16%)471(Top 4%)471(Top 10%)
25.2M25.20 mi0.35 mi5574+305005005094(Top 19%)739(Top 6%)739(Top 15%)
Finish26.22 mi1.02 mi5480+94491+9491+94667(Top 18%)619(Top 5%)619(Top 13%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 24%
×21stories
+97ft-345ft

Overall

6406

Females

618

F18-39

618

5K→10K

3.1 - 6.2 mi

Top 26%
×5stories
+79ft-138ft

Overall

6870

Females

719

F18-39

719

10K→15K

6.2 - 9.3 mi

Top 24%
×3stories
+67ft-78ft

Overall

6406

Females

618

F18-39

618

15K→20K

9.3 - 12.4 mi

Top 26%
×5stories
+106ft-86ft

Overall

6929

Females

762

F18-39

762

20K→Half

12.4 - 13.1 mi

Top 29%
×2stories
+19ft-37ft

Overall

7765

Females

985

F18-39

985

Half→25K

13.1 - 15.5 mi

Top 26%
×4stories
+66ft-88ft

Overall

6828

Females

789

F18-39

789

25K→30K

15.5 - 18.6 mi

Top 22%
×9stories
+181ft-148ft

Overall

5969

Females

614

F18-39

614

30K→20M

18.6 - 20.0 mi

Top 18%
×5stories
+64ft-50ft

Overall

4892

Females

437

F18-39

437

20M→21M

20.0 - 21.0 mi

Top 16%
×8stories
+106ft-24ft

Overall

4229

Females

351

F18-39

351

21M→35K

21.0 - 21.8 mi

Top 12%
×7stories
+17ft-86ft

Overall

3164

Females

211

F18-39

211

35K→23M

21.8 - 23.0 mi

Top 14%
×5stories
+23ft-63ft

Overall

3761

Females

290

F18-39

290

23M→24M

23.0 - 24.0 mi

Top 16%
×6stories
+12ft-82ft

Overall

4202

Females

378

F18-39

378

24M→40K

24.0 - 24.9 mi

Top 16%
×1story
+6ft-20ft

Overall

4280

Females

471

F18-39

471

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5094

Females

739

F18-39

739

25.2M→Finish

25.2 - 26.2 mi

Top 18%
×2stories
+22ft-21ft

Overall

4667

Females

619

F18-39

619

Passing Analysis

Category:
Athletes Passed
1609
Passed By
854
Net Change
+755
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6235
5K → 10K81353-272#6235#6507
10K → 15K146102+44#6507#6463
15K → 20K74169-95#6463#6558
20K → Half368-65#6558#6623
Half → 25K7886-8#6623#6631
25K → 30K21130+181#6631#6450
30K → 20M1535+148#6450#6302
20M → 21M1645+159#6302#6143
21M → 35K1331+132#6143#6011
35K → 23M1810+181#6011#5830
23M → 24M1347+127#5830#5703
24M → 40K1045+99#5703#5604
40K → 25.2M377+30#5604#5574
25.2M → Finish11016+94#5574#5480
TOTALS1609854+755
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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