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BOSTON MARATHON 2024

Cathy Vichaidith

Bib: 21251•F

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Masters (Masters Women)
#0 / 6263
Division (F45-49)
#0 / 1753
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
8:26/mi
26:11
↑ 97↓ 3451.5%
10K· 6.21 mi
8:32/mi
52:43
↑ 79↓ 1380.4%
15K· 9.32 mi
8:59/mi
1:20:39
↑ 67↓ 78
20K· 12.43 mi
9:31/mi
1:50:14
↑ 106↓ 860.1%
Half· 13.11 mi
9:37/mi
1:56:48
↑ 19↓ 370.5%
25K· 15.53 mi
10:16/mi
2:21:42
↑ 66↓ 880.2%
30K· 18.64 mi
10:38/mi
2:54:44
↑ 181↓ 1480.2%
20M
10:30/mi
3:09:00
↑ 64↓ 500.2%
21M
11:24/mi
3:20:24
↑ 106↓ 241.6%
35K· 21.75 mi
9:03/mi
3:27:10
↑ 17↓ 861.7%
23M
10:00/mi
3:39:41
↑ 23↓ 630.6%
24M
9:38/mi
3:49:19
↓ 821.3%
40K· 24.85 mi
9:53/mi
3:57:46
↓ 200.3%
25.2M
11:16/mi
4:01:39
↑ 13↓ 160.2%
Finish· 26.22 mi
8:43/mi
4:10:32
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:56:48
Pace8:55 /mi
2nd Half
Distance13.11 mi
Time2:13:44
Pace10:12 /mi
📊Positive Split: 14.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:0726:118:2626:11
8:26
-
10K
6.21 mi11:49:3952:438:2926:32
8:32
+0:06
15K
9.32 mi12:17:351:20:398:3927:56
8:59
+0:27
20K
12.43 mi12:47:101:50:148:5229:35
9:31
+0:32
Half
13.11 mi12:53:441:56:488:556:34
9:37
+0:06
25K
15.53 mi13:18:382:21:429:0724:54
10:16
+0:39
30K
18.64 mi13:51:402:54:449:2233:02
10:38
+0:22
20M
20.00 mi14:05:563:09:009:2714:16
10:30
-0:08
21M
21.00 mi14:17:203:20:249:3311:24
11:24
+0:54
35K
21.75 mi14:24:063:27:109:326:46
9:03
-2:21
23M
23.00 mi14:36:373:39:419:3312:31
10:00
+0:57
24M
24.00 mi14:46:153:49:199:339:38
9:38
-0:22
40K
24.85 mi14:54:423:57:469:348:27
9:53
+0:15
25.2M
25.20 mi14:58:354:01:399:353:53
11:16
+1:23
Finish
26.22 mi15:07:284:10:329:348:53
8:43
-2:33

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

8:26 /mi

Average Pace

9:34 /mi

Slowest Pace

11:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:36:18

38% of race

Time at Steady Pace

1:06:45

27% of race

Time at Slower Pace

1:27:29

35% of race

Average Pace: 9:33 /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 mi11:23:0726:118:2626:11
8:26
#17384
10K
6.21 mi11:49:3952:438:2926:32
8:32
#17439
15K
9.32 mi12:17:351:20:398:3927:56
8:59
#17959
20K
12.43 mi12:47:101:50:148:5229:35
9:31
#18352
Half
13.11 mi12:53:441:56:488:556:34
9:37
#18499
25K
15.53 mi13:18:382:21:429:0724:54
10:16
#18822
30K
18.64 mi13:51:402:54:449:2233:02
10:38
#18924
20M
20.00 mi14:05:563:09:009:2714:16
10:30
#18830
21M
21.00 mi14:17:203:20:249:3311:24
11:24
#18737
35K
21.75 mi14:24:063:27:109:326:46
9:03
#18542
23M
23.00 mi14:36:373:39:419:3312:31
10:00
#18326
24M
24.00 mi14:46:153:49:199:339:38
9:38
#18188
40K
24.85 mi14:54:423:57:469:348:27
9:53
#18032
25.2M
25.20 mi14:58:354:01:399:353:53
11:16
#17976
Finish
26.22 mi15:07:284:10:329:348:53
8:43
#17770
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi173846397639718879(Top 74%)7183(Top 66%)7183(Top 410%)
10K6.21 mi3.10 mi17439-556414-176414-1717522(Top 69%)6444(Top 59%)6444(Top 368%)
15K9.32 mi3.11 mi17959-5206717-3036717-30318879(Top 74%)7183(Top 66%)7183(Top 410%)
20K12.43 mi3.11 mi18352-3936934-2176934-21719276(Top 75%)7421(Top 68%)7421(Top 423%)
Half13.11 mi0.68 mi18499-1477015-817015-8120450(Top 80%)8115(Top 74%)8115(Top 463%)
25K15.53 mi2.42 mi18822-3237211-1967211-19619834(Top 78%)7829(Top 72%)7829(Top 447%)
30K18.64 mi3.11 mi18924-1027327-1167327-11619096(Top 75%)7624(Top 70%)7624(Top 435%)
20M20.00 mi1.36 mi18830+947305+227305+2217995(Top 70%)7206(Top 66%)7206(Top 411%)
21M21.00 mi1.00 mi18737+937286+197286+1917422(Top 68%)7051(Top 65%)7051(Top 402%)
35K21.75 mi0.75 mi18542+1957188+987188+9813571(Top 53%)5117(Top 47%)5117(Top 292%)
23M23.00 mi1.25 mi18326+2167100+887100+8815475(Top 61%)6159(Top 56%)6159(Top 351%)
24M24.00 mi1.00 mi18188+1387058+427058+4215046(Top 59%)5984(Top 55%)5984(Top 341%)
40K24.85 mi0.85 mi18032+1567000+587000+5814610(Top 57%)5832(Top 53%)5832(Top 333%)
25.2M25.20 mi0.35 mi17976+566980+206980+2015393(Top 60%)6231(Top 57%)6231(Top 355%)
Finish26.22 mi1.02 mi17770+2066891+896891+8912771(Top 50%)4859(Top 44%)4859(Top 277%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21story building
+97ft-345ft

Overall

18879

Females

7183

F45-49

7183

5K→10K

3.1 - 6.2 mi

Top 69%
×5story building
+79ft-138ft

Overall

17522

Females

6444

F45-49

6444

10K→15K

6.2 - 9.3 mi

Top 74%
×3story building
+67ft-78ft

Overall

18879

Females

7183

F45-49

7183

15K→20K

9.3 - 12.4 mi

Top 75%
×5story building
+106ft-86ft

Overall

19276

Females

7421

F45-49

7421

20K→Half

12.4 - 13.1 mi

Top 80%
×2story building
+19ft-37ft

Overall

20450

Females

8115

F45-49

8115

Half→25K

13.1 - 15.5 mi

Top 78%
×4story building
+66ft-88ft

Overall

19834

Females

7829

F45-49

7829

25K→30K

15.5 - 18.6 mi

Top 75%
×9story building
+181ft-148ft

Overall

19096

Females

7624

F45-49

7624

30K→20M

18.6 - 20.0 mi

Top 70%
×5story building
+64ft-50ft

Overall

17995

Females

7206

F45-49

7206

20M→21M

20.0 - 21.0 mi

Top 68%
×8story building
+106ft-24ft

Overall

17422

Females

7051

F45-49

7051

21M→35K

21.0 - 21.8 mi

Top 53%
×7story building
+17ft-86ft

Overall

13571

Females

5117

F45-49

5117

35K→23M

21.8 - 23.0 mi

Top 61%
×5story building
+23ft-63ft

Overall

15475

Females

6159

F45-49

6159

23M→24M

23.0 - 24.0 mi

Top 59%
×6story building
+12ft-82ft

Overall

15046

Females

5984

F45-49

5984

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

14610

Females

5832

F45-49

5832

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

15393

Females

6231

F45-49

6231

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2story building
+22ft-21ft

Overall

12771

Females

4859

F45-49

4859

Passing Analysis

Category:
Athletes Passed
2097
Passed By
2483
Net Change
-386
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17384
5K → 10K257312-55#17384#17439
10K → 15K112632-520#17439#17959
15K → 20K127520-393#17959#18352
20K → Half12159-147#18352#18499
Half → 25K118441-323#18499#18822
25K → 30K192294-102#18822#18924
30K → 20M14753+94#18924#18830
20M → 21M13643+93#18830#18737
21M → 35K1961+195#18737#18542
35K → 23M22610+216#18542#18326
23M → 24M1479+138#18326#18188
24M → 40K1582+156#18188#18032
40K → 25.2M626+56#18032#17976
25.2M → Finish2071+206#17976#17770
TOTALS20972483-386
📊

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