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BOSTON MARATHON 2024

Laurie Cass

Bib: 20838•F

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Top 45%
Masters (Masters Women)
#0 / 6263
Top 35%
Division (F50-54)
#0 / 1187
Top 27%
Race Day Weather
55°/45°F
scattered clouds

⏱️ 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
23:21
↑ 97↓ 3451.5%
10K· 6.21 mi
7:42/mi
47:16
↑ 79↓ 1380.4%
15K· 9.32 mi
7:57/mi
1:11:59
↑ 67↓ 78
20K· 12.43 mi
8:05/mi
1:37:07
↑ 106↓ 860.1%
Half· 13.11 mi
7:56/mi
1:42:32
↑ 19↓ 370.5%
25K· 15.53 mi
8:35/mi
2:03:20
↑ 66↓ 880.2%
30K· 18.64 mi
10:06/mi
2:34:42
↑ 181↓ 1480.2%
20M
10:34/mi
2:49:04
↑ 64↓ 500.2%
21M
10:19/mi
2:59:23
↑ 106↓ 241.6%
35K· 21.75 mi
9:05/mi
3:06:11
↑ 17↓ 861.7%
23M
9:07/mi
3:17:36
↑ 23↓ 630.6%
24M
10:21/mi
3:27:57
↓ 821.3%
40K· 24.85 mi
9:51/mi
3:36:22
↓ 200.3%
25.2M
9:49/mi
3:39:45
↑ 13↓ 160.2%
Finish· 26.22 mi
9:38/mi
3:49:34
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:32
Pace7:49 /mi
2nd Half
Distance13.11 mi
Time2:07:02
Pace9:41 /mi
📊Positive Split: 23.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:0723:217:3123:21
7:31
-
10K
6.21 mi11:41:0247:167:3623:55
7:42
+0:11
15K
9.32 mi12:05:451:11:597:4324:43
7:57
+0:15
20K
12.43 mi12:30:531:37:077:4925:08
8:05
+0:08
Half
13.11 mi12:36:181:42:327:495:25
7:56
-0:09
25K
15.53 mi12:57:062:03:207:5620:48
8:35
+0:39
30K
18.64 mi13:28:282:34:428:1831:22
10:06
+1:31
20M
20.00 mi13:42:502:49:048:2714:22
10:34
+0:28
21M
21.00 mi13:53:092:59:238:3310:19
10:19
-0:15
35K
21.75 mi13:59:573:06:118:346:48
9:05
-1:14
23M
23.00 mi14:11:223:17:368:3511:25
9:07
+0:02
24M
24.00 mi14:21:433:27:578:4010:21
10:21
+1:14
40K
24.85 mi14:30:083:36:228:428:25
9:51
-0:30
25.2M
25.20 mi14:33:313:39:458:433:23
9:49
-0:02
Finish
26.22 mi14:43:203:49:348:469:49
9:38
-0:11

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

7:31 /mi

Average Pace

8:46 /mi

Slowest Pace

10:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:03:20

54% of race

Time at Steady Pace

18:13

8% of race

Time at Slower Pace

1:28:01

38% of race

Average Pace: 8:45 /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 mi11:17:0723:217:3123:21
7:31
#10918
10K
6.21 mi11:41:0247:167:3623:55
7:42
#11341
15K
9.32 mi12:05:451:11:597:4324:43
7:57
#11932
20K
12.43 mi12:30:531:37:077:4925:08
8:05
#12029
Half
13.11 mi12:36:181:42:327:495:25
7:56
#12033
25K
15.53 mi12:57:062:03:207:5620:48
8:35
#12270
30K
18.64 mi13:28:282:34:428:1831:22
10:06
#13618
20M
20.00 mi13:42:502:49:048:2714:22
10:34
#14108
21M
21.00 mi13:53:092:59:238:3310:19
10:19
#14096
35K
21.75 mi13:59:573:06:118:346:48
9:05
#14058
23M
23.00 mi14:11:223:17:368:3511:25
9:07
#13893
24M
24.00 mi14:21:433:27:578:4010:21
10:21
#14133
40K
24.85 mi14:30:083:36:228:428:25
9:51
#14144
25.2M
25.20 mi14:33:313:39:458:433:23
9:49
#14045
Finish
26.22 mi14:43:203:49:348:469:49
9:38
#14170
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi109182522252213145(Top 51%)3892(Top 36%)3892(Top 328%)
10K6.21 mi3.10 mi11341-4232796-2742796-27411884(Top 47%)3128(Top 29%)3128(Top 264%)
15K9.32 mi3.11 mi11932-5913166-3703166-37013145(Top 51%)3892(Top 36%)3892(Top 328%)
20K12.43 mi3.11 mi12029-973237-713237-7112472(Top 49%)3568(Top 33%)3568(Top 301%)
Half13.11 mi0.68 mi12033-43244-73244-712417(Top 49%)3572(Top 33%)3572(Top 301%)
25K15.53 mi2.42 mi12270-2373412-1683412-16813483(Top 53%)4311(Top 39%)4311(Top 363%)
30K18.64 mi3.11 mi13618-13484263-8514263-85117649(Top 69%)6863(Top 63%)6863(Top 578%)
20M20.00 mi1.36 mi14108-4904597-3344597-33418184(Top 71%)7295(Top 67%)7295(Top 615%)
21M21.00 mi1.00 mi14096+124652-554652-5514197(Top 56%)5415(Top 50%)5415(Top 456%)
35K21.75 mi0.75 mi14058+384660-84660-813774(Top 54%)5203(Top 48%)5203(Top 438%)
23M23.00 mi1.25 mi13893+1654625+354625+3511793(Top 46%)4304(Top 39%)4304(Top 363%)
24M24.00 mi1.00 mi14133-2404804-1794804-17917430(Top 68%)7167(Top 66%)7167(Top 604%)
40K24.85 mi0.85 mi14144-114844-404844-4014453(Top 57%)5748(Top 53%)5748(Top 484%)
25.2M25.20 mi0.35 mi14045+994812+324812+3210218(Top 40%)3748(Top 34%)3748(Top 316%)
Finish26.22 mi1.02 mi14170-1254905-934905-9317091(Top 67%)7043(Top 64%)7043(Top 593%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21story building
+97ft-345ft

Overall

13145

Females

3892

F50-54

3892

5K→10K

3.1 - 6.2 mi

Top 47%
×5story building
+79ft-138ft

Overall

11884

Females

3128

F50-54

3128

10K→15K

6.2 - 9.3 mi

Top 51%
×3story building
+67ft-78ft

Overall

13145

Females

3892

F50-54

3892

15K→20K

9.3 - 12.4 mi

Top 49%
×5story building
+106ft-86ft

Overall

12472

Females

3568

F50-54

3568

20K→Half

12.4 - 13.1 mi

Top 49%
×2story building
+19ft-37ft

Overall

12417

Females

3572

F50-54

3572

Half→25K

13.1 - 15.5 mi

Top 53%
×4story building
+66ft-88ft

Overall

13483

Females

4311

F50-54

4311

25K→30K

15.5 - 18.6 mi

Top 69%
×9story building
+181ft-148ft

Overall

17649

Females

6863

F50-54

6863

30K→20M

18.6 - 20.0 mi

Top 71%
×5story building
+64ft-50ft

Overall

18184

Females

7295

F50-54

7295

20M→21M

20.0 - 21.0 mi

Top 56%
×8story building
+106ft-24ft

Overall

14197

Females

5415

F50-54

5415

21M→35K

21.0 - 21.8 mi

Top 54%
×7story building
+17ft-86ft

Overall

13774

Females

5203

F50-54

5203

35K→23M

21.8 - 23.0 mi

Top 46%
×5story building
+23ft-63ft

Overall

11793

Females

4304

F50-54

4304

23M→24M

23.0 - 24.0 mi

Top 68%
×6story building
+12ft-82ft

Overall

17430

Females

7167

F50-54

7167

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

14453

Females

5748

F50-54

5748

40K→25.2M

24.9 - 25.2 mi

Top 40%
×1story
+13ft-16ft

Overall

10218

Females

3748

F50-54

3748

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2story building
+22ft-21ft

Overall

17091

Females

7043

F50-54

7043

Passing Analysis

Category:
Athletes Passed
1433
Passed By
4685
Net Change
-3252
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10918
5K → 10K144567-423#10918#11341
10K → 15K77668-591#11341#11932
15K → 20K195292-97#11932#12029
20K → Half3943-4#12029#12033
Half → 25K170407-237#12033#12270
25K → 30K501398-1348#12270#13618
30K → 20M39529-490#13618#14108
20M → 21M146134+12#14108#14096
21M → 35K9557+38#14096#14058
35K → 23M20237+165#14058#13893
23M → 24M57297-240#13893#14133
24M → 40K6879-11#14133#14144
40K → 25.2M1023+99#14144#14045
25.2M → Finish49174-125#14045#14170
TOTALS14334685-3252
📊

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