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BOSTON MARATHON 2023

Cassandra Legault

Bib: 17291•F

BC

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 34%
Gender (Female)
#0 / 11423
Top 15%
Division (F18-39)
#0 / 4884
Top 27%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:35
Rank: #10461
Start → 5K
23:35 | 7:35/mi
10K· 6.21 mi
46:56
Rank: #10506 (-45)
5K → 10K
23:21 | 7:31/mi
15K· 9.32 mi
1:10:24
Rank: #10530 (-24)
10K → 15K
23:28 | 7:33/mi
20K· 12.43 mi
1:33:51
Rank: #10290 (+240)
15K → 20K
23:27 | 7:33/mi
Half· 13.11 mi
1:38:58
Rank: #10287 (+3)
20K → Half
5:07 | 7:30/mi
25K· 15.53 mi
1:57:23
Rank: #10101 (+186)
Half → 25K
18:25 | 7:36/mi
30K· 18.64 mi
2:21:45
Rank: #10003 (+98)
25K → 30K
24:22 | 7:51/mi
20M
2:32:21
Rank: #9876 (+127)
30K → 20M
10:36 | 7:48/mi
21M
2:40:29
Rank: #9746 (+130)
20M → 21M
8:08 | 8:08/mi
35K· 21.75 mi
2:46:04
Rank: #9695 (+51)
21M → 35K
5:35 | 7:28/mi
23M
2:55:42
Rank: #9527 (+168)
35K → 23M
9:38 | 7:42/mi
24M
3:03:11
Rank: #9416 (+111)
23M → 24M
7:29 | 7:29/mi
40K· 24.85 mi
3:09:50
Rank: #9361 (+55)
24M → 40K
6:39 | 7:47/mi
25.2M
3:12:36
Rank: #9301 (+60)
40K → 25.2M
2:46 | 8:01/mi
Finish· 26.22 mi
3:19:48
Rank: #9134 (+167)
25.2M → Finish
7:12 | 7:04/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:58
Pace7:33 /mi
2nd Half
Distance13.11 mi
Time1:40:50
Pace7:42 /mi
📊Positive Split: 1.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:2123:357:3523:35
7:35
-
10K
6.21 mi11:37:4246:567:3323:21
7:31
-0:04
15K
9.32 mi12:01:101:10:247:3323:28
7:33
+0:02
20K
12.43 mi12:24:371:33:517:3323:27
7:33
0:00
Half
13.11 mi12:29:441:38:587:335:07
7:30
-0:03
25K
15.53 mi12:48:091:57:237:3318:25
7:36
+0:06
30K
18.64 mi13:12:312:21:457:3624:22
7:51
+0:15
20M
20.00 mi13:23:072:32:217:3710:36
7:48
-0:03
21M
21.00 mi13:31:152:40:297:398:08
8:08
+0:20
35K
21.75 mi13:36:502:46:047:385:35
7:28
-0:40
23M
23.00 mi13:46:282:55:427:389:38
7:42
+0:14
24M
24.00 mi13:53:573:03:117:387:29
7:29
-0:13
40K
24.85 mi14:00:363:09:507:386:39
7:47
+0:18
25.2M
25.20 mi14:03:223:12:367:392:46
8:01
+0:14
Finish
26.22 mi14:10:343:19:487:387:12
7:04
-0:57

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

7:04 /mi

Average Pace

7:38 /mi

Slowest Pace

8:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:27:17

74% of race

Time at Steady Pace

52:31

26% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:37 /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 mi11:14:2123:357:3523:35
7:35
#10461
10K
6.21 mi11:37:4246:567:3323:21
7:31
#10506
15K
9.32 mi12:01:101:10:247:3323:28
7:33
#10530
20K
12.43 mi12:24:371:33:517:3323:27
7:33
#10290
Half
13.11 mi12:29:441:38:587:335:07
7:30
#10287
25K
15.53 mi12:48:091:57:237:3318:25
7:36
#10101
30K
18.64 mi13:12:312:21:457:3624:22
7:51
#10003
20M
20.00 mi13:23:072:32:217:3710:36
7:48
#9876
21M
21.00 mi13:31:152:40:297:398:08
8:08
#9746
35K
21.75 mi13:36:502:46:047:385:35
7:28
#9695
23M
23.00 mi13:46:282:55:427:389:38
7:42
#9527
24M
24.00 mi13:53:573:03:117:387:29
7:29
#9416
40K
24.85 mi14:00:363:09:507:386:39
7:47
#9361
25.2M
25.20 mi14:03:223:12:367:392:46
8:01
#9301
Finish
26.22 mi14:10:343:19:487:387:12
7:04
#9134
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi104612066206610612(Top 40%)2137(Top 19%)2137(Top 44%)
10K6.21 mi3.10 mi10506-452074-82074-810576(Top 40%)2091(Top 18%)2091(Top 43%)
15K9.32 mi3.11 mi10530-242079-52079-510612(Top 40%)2137(Top 19%)2137(Top 44%)
20K12.43 mi3.11 mi10290+2401970+1091970+1099704(Top 36%)1785(Top 16%)1785(Top 37%)
Half13.11 mi0.68 mi10287+31968+21968+210267(Top 39%)2000(Top 18%)2000(Top 41%)
25K15.53 mi2.42 mi10101+1861904+641904+649518(Top 36%)1785(Top 16%)1785(Top 37%)
30K18.64 mi3.11 mi10003+981892+121892+129689(Top 36%)2012(Top 18%)2012(Top 41%)
20M20.00 mi1.36 mi9876+1271866+261866+268884(Top 33%)1751(Top 15%)1751(Top 36%)
21M21.00 mi1.00 mi9746+1301826+401826+408226(Top 31%)1622(Top 14%)1622(Top 33%)
35K21.75 mi0.75 mi9695+511820+61820+68317(Top 31%)1619(Top 14%)1619(Top 33%)
23M23.00 mi1.25 mi9527+1681776+441776+447711(Top 29%)1459(Top 13%)1459(Top 30%)
24M24.00 mi1.00 mi9416+1111767+91767+97625(Top 29%)1530(Top 13%)1530(Top 31%)
40K24.85 mi0.85 mi9361+551772-51772-58560(Top 32%)1962(Top 17%)1962(Top 40%)
25.2M25.20 mi0.35 mi9301+601756+161756+166742(Top 25%)1328(Top 12%)1328(Top 27%)
Finish26.22 mi1.02 mi9134+1671703+531703+535650(Top 21%)963(Top 8%)963(Top 20%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21stories
+97ft-345ft

Overall

10612

Females

2137

F18-39

2137

5K→10K

3.1 - 6.2 mi

Top 40%
×5stories
+79ft-138ft

Overall

10576

Females

2091

F18-39

2091

10K→15K

6.2 - 9.3 mi

Top 40%
×3stories
+67ft-78ft

Overall

10612

Females

2137

F18-39

2137

15K→20K

9.3 - 12.4 mi

Top 36%
×5stories
+106ft-86ft

Overall

9704

Females

1785

F18-39

1785

20K→Half

12.4 - 13.1 mi

Top 39%
×2stories
+19ft-37ft

Overall

10267

Females

2000

F18-39

2000

Half→25K

13.1 - 15.5 mi

Top 36%
×4stories
+66ft-88ft

Overall

9518

Females

1785

F18-39

1785

25K→30K

15.5 - 18.6 mi

Top 36%
×9stories
+181ft-148ft

Overall

9689

Females

2012

F18-39

2012

30K→20M

18.6 - 20.0 mi

Top 33%
×5stories
+64ft-50ft

Overall

8884

Females

1751

F18-39

1751

20M→21M

20.0 - 21.0 mi

Top 31%
×8stories
+106ft-24ft

Overall

8226

Females

1622

F18-39

1622

21M→35K

21.0 - 21.8 mi

Top 31%
×7stories
+17ft-86ft

Overall

8317

Females

1619

F18-39

1619

35K→23M

21.8 - 23.0 mi

Top 29%
×5stories
+23ft-63ft

Overall

7711

Females

1459

F18-39

1459

23M→24M

23.0 - 24.0 mi

Top 29%
×6stories
+12ft-82ft

Overall

7625

Females

1530

F18-39

1530

24M→40K

24.0 - 24.9 mi

Top 32%
×1story
+6ft-20ft

Overall

8560

Females

1962

F18-39

1962

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

6742

Females

1328

F18-39

1328

25.2M→Finish

25.2 - 26.2 mi

Top 21%
×2stories
+22ft-21ft

Overall

5650

Females

963

F18-39

963

Passing Analysis

Category:
Athletes Passed
2209*
Passed By
882
Net Change
+1327
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10461
5K → 10K260*305-45#10461#10506
10K → 15K191215-24#10506#10530
15K → 20K281*41+240#10530#10290
20K → Half2825+3#10290#10287
Half → 25K22943+186#10287#10101
25K → 30K206*108+98#10101#10003
30K → 20M155*28+127#10003#9876
20M → 21M15121+130#9876#9746
21M → 35K6716+51#9746#9695
35K → 23M18012+168#9695#9527
23M → 24M13221+111#9527#9416
24M → 40K9237+55#9416#9361
40K → 25.2M644+60#9361#9301
25.2M → Finish1736+167#9301#9134
TOTALS2209*882+1327

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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