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BOSTON MARATHON 2023

Cassandra Norton

Bib: 24934•F

MA

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
36:07
Rank: #26283
Start → 5K
36:07 | 11:37/mi
10K· 6.21 mi
1:12:58
Rank: #26255 (+28)
5K → 10K
36:51 | 11:52/mi
15K· 9.32 mi
1:49:24
Rank: #26133 (+122)
10K → 15K
36:26 | 11:44/mi
20K· 12.43 mi
2:28:32
Rank: #26129 (+4)
15K → 20K
39:08 | 12:36/mi
Half· 13.11 mi
2:36:19
Rank: #26098 (+31)
20K → Half
7:47 | 11:24/mi
25K· 15.53 mi
3:06:08
Rank: #25995 (+103)
Half → 25K
29:49 | 12:18/mi
30K· 18.64 mi
3:44:56
Rank: #25844 (+151)
25K → 30K
38:48 | 12:29/mi
20M
4:01:30
Rank: #25765 (+79)
30K → 20M
16:34 | 12:11/mi
21M
4:16:34
Rank: #25771 (-6)
20M → 21M
15:04 | 15:04/mi
35K· 21.75 mi
4:25:23
Rank: #25736 (+35)
21M → 35K
8:49 | 11:47/mi
23M
4:42:28
Rank: #25749 (-13)
35K → 23M
17:05 | 13:39/mi
24M
4:58:11
Rank: #25820 (-71)
23M → 24M
15:43 | 15:43/mi
40K· 24.85 mi
5:08:54
Rank: #25792 (+28)
24M → 40K
10:43 | 12:32/mi
25.2M
5:14:56
Rank: #25819 (-27)
40K → 25.2M
6:02 | 17:30/mi
Finish· 26.22 mi
5:26:45
Rank: #25794 (+25)
25.2M → Finish
11:49 | 11:36/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:36:19
Pace11:55 /mi
2nd Half
Distance13.11 mi
Time2:50:26
Pace13:00 /mi
📊Positive Split: 9.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:4136:0711:3736:07
11:37
-
10K
6.21 mi12:29:321:12:5811:4536:51
11:52
+0:15
15K
9.32 mi13:05:581:49:2411:4436:26
11:44
-0:08
20K
12.43 mi13:45:062:28:3211:5739:08
12:36
+0:52
Half
13.11 mi13:52:532:36:1911:557:47
11:24
-1:12
25K
15.53 mi14:22:423:06:0811:5929:49
12:18
+0:54
30K
18.64 mi15:01:303:44:5612:0438:48
12:29
+0:11
20M
20.00 mi15:18:044:01:3012:0416:34
12:11
-0:18
21M
21.00 mi15:33:084:16:3412:1315:04
15:04
+2:53
35K
21.75 mi15:41:574:25:2312:128:49
11:47
-3:17
23M
23.00 mi15:59:024:42:2812:1717:05
13:39
+1:52
24M
24.00 mi16:14:454:58:1112:2515:43
15:43
+2:04
40K
24.85 mi16:25:285:08:5412:2610:43
12:32
-3:11
25.2M
25.20 mi16:31:305:14:5612:306:02
17:30
+4:58
Finish
26.22 mi16:43:195:26:4512:2811:49
11:36
-5:54

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

11:24 /mi

Average Pace

12:28 /mi

Slowest Pace

17:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

7:47

2% of race

Time at Steady Pace

4:25:04

81% of race

Time at Slower Pace

53:54

16% of race

Average Pace: 12:28 /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 mi11:52:4136:0711:3736:07
11:37
#26283
10K
6.21 mi12:29:321:12:5811:4536:51
11:52
#26255
15K
9.32 mi13:05:581:49:2411:4436:26
11:44
#26133
20K
12.43 mi13:45:062:28:3211:5739:08
12:36
#26129
Half
13.11 mi13:52:532:36:1911:557:47
11:24
#26098
25K
15.53 mi14:22:423:06:0811:5929:49
12:18
#25995
30K
18.64 mi15:01:303:44:5612:0438:48
12:29
#25844
20M
20.00 mi15:18:044:01:3012:0416:34
12:11
#25765
21M
21.00 mi15:33:084:16:3412:1315:04
15:04
#25771
35K
21.75 mi15:41:574:25:2312:128:49
11:47
#25736
23M
23.00 mi15:59:024:42:2812:1717:05
13:39
#25749
24M
24.00 mi16:14:454:58:1112:2515:43
15:43
#25820
40K
24.85 mi16:25:285:08:5412:2610:43
12:32
#25792
25.2M
25.20 mi16:31:305:14:5612:306:02
17:30
#25819
Finish
26.22 mi16:43:195:26:4512:2811:49
11:36
#25794
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi26283112191121925880(Top 97%)10973(Top 96%)10973(Top 225%)
10K6.21 mi3.10 mi26255+2811199+2011199+2026198(Top 98%)11167(Top 98%)11167(Top 229%)
15K9.32 mi3.11 mi26133+12211122+7711122+7725880(Top 97%)10973(Top 96%)10973(Top 225%)
20K12.43 mi3.11 mi26129+411121+111121+126023(Top 98%)11071(Top 97%)11071(Top 227%)
Half13.11 mi0.68 mi26098+3111102+1911102+1925408(Top 95%)10735(Top 94%)10735(Top 220%)
25K15.53 mi2.42 mi25995+10311044+5811044+5825385(Top 95%)10729(Top 94%)10729(Top 220%)
30K18.64 mi3.11 mi25844+15110961+8310961+8324988(Top 94%)10559(Top 92%)10559(Top 216%)
20M20.00 mi1.36 mi25765+7910924+3710924+3724428(Top 92%)10302(Top 90%)10302(Top 211%)
21M21.00 mi1.00 mi25771-610931-710931-725764(Top 97%)10990(Top 96%)10990(Top 225%)
35K21.75 mi0.75 mi25736+3510913+1810913+1824472(Top 92%)10385(Top 91%)10385(Top 213%)
23M23.00 mi1.25 mi25749-1310923-1010923-1025604(Top 96%)10959(Top 96%)10959(Top 224%)
24M24.00 mi1.00 mi25820-7110968-4510968-4526495(Top 100%)11373(Top 100%)11373(Top 233%)
40K24.85 mi0.85 mi25792+2810959+910959+924494(Top 92%)10435(Top 91%)10435(Top 214%)
25.2M25.20 mi0.35 mi25819-2710973-1410973-1426447(Top 99%)11360(Top 99%)11360(Top 233%)
Finish26.22 mi1.02 mi25794+2510962+1110962+1124814(Top 93%)10570(Top 93%)10570(Top 216%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 97%
×21stories
+97ft-345ft

Overall

25880

Females

10973

F18-39

10973

5K→10K

3.1 - 6.2 mi

Top 98%
×5stories
+79ft-138ft

Overall

26198

Females

11167

F18-39

11167

10K→15K

6.2 - 9.3 mi

Top 97%
×3stories
+67ft-78ft

Overall

25880

Females

10973

F18-39

10973

15K→20K

9.3 - 12.4 mi

Top 98%
×5stories
+106ft-86ft

Overall

26023

Females

11071

F18-39

11071

20K→Half

12.4 - 13.1 mi

Top 95%
×2stories
+19ft-37ft

Overall

25408

Females

10735

F18-39

10735

Half→25K

13.1 - 15.5 mi

Top 95%
×4stories
+66ft-88ft

Overall

25385

Females

10729

F18-39

10729

25K→30K

15.5 - 18.6 mi

Top 94%
×9stories
+181ft-148ft

Overall

24988

Females

10559

F18-39

10559

30K→20M

18.6 - 20.0 mi

Top 92%
×5stories
+64ft-50ft

Overall

24428

Females

10302

F18-39

10302

20M→21M

20.0 - 21.0 mi

Top 97%
×8stories
+106ft-24ft

Overall

25764

Females

10990

F18-39

10990

21M→35K

21.0 - 21.8 mi

Top 92%
×7stories
+17ft-86ft

Overall

24472

Females

10385

F18-39

10385

35K→23M

21.8 - 23.0 mi

Top 96%
×5stories
+23ft-63ft

Overall

25604

Females

10959

F18-39

10959

23M→24M

23.0 - 24.0 mi

Top 100%
×6stories
+12ft-82ft

Overall

26495

Females

11373

F18-39

11373

24M→40K

24.0 - 24.9 mi

Top 92%
×1story
+6ft-20ft

Overall

24494

Females

10435

F18-39

10435

40K→25.2M

24.9 - 25.2 mi

Top 99%
×1story
+13ft-16ft

Overall

26447

Females

11360

F18-39

11360

25.2M→Finish

25.2 - 26.2 mi

Top 93%
×2stories
+22ft-21ft

Overall

24814

Females

10570

F18-39

10570

Passing Analysis

Category:
Athletes Passed
746
Passed By
257
Net Change
+489
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26283
5K → 10K7345+28#26283#26255
10K → 15K1319+122#26255#26133
15K → 20K4541+4#26133#26129
20K → Half310+31#26129#26098
Half → 25K1085+103#26098#25995
25K → 30K1521+151#25995#25844
30K → 20M823+79#25844#25765
20M → 21M1319-6#25765#25771
21M → 35K372+35#25771#25736
35K → 23M1528-13#25736#25749
23M → 24M172-71#25749#25820
24M → 40K302+28#25820#25792
40K → 25.2M027-27#25792#25819
25.2M → Finish283+25#25819#25794
TOTALS746257+489
📊

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