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BOSTON MARATHON 2024

Sandra Townsend

Bib: 21497•F

LA

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Top 46%
Masters (Masters Women)
#0 / 6263
Top 36%
Division (F50-54)
#0 / 1187
Top 29%
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
8:35/mi
26:39
↑ 97↓ 3451.5%
10K· 6.21 mi
8:28/mi
52:58
↑ 79↓ 1380.4%
15K· 9.32 mi
8:25/mi
1:19:06
↑ 67↓ 78
20K· 12.43 mi
8:24/mi
1:45:11
↑ 106↓ 860.1%
Half· 13.11 mi
8:15/mi
1:50:49
↑ 19↓ 370.5%
25K· 15.53 mi
8:31/mi
2:11:28
↑ 66↓ 880.2%
30K· 18.64 mi
9:19/mi
2:40:24
↑ 181↓ 1480.2%
20M
9:12/mi
2:52:54
↑ 64↓ 500.2%
21M
10:15/mi
3:03:09
↑ 106↓ 241.6%
35K· 21.75 mi
8:21/mi
3:09:24
↑ 17↓ 861.7%
23M
9:14/mi
3:20:58
↑ 23↓ 630.6%
24M
8:50/mi
3:29:48
↓ 821.3%
40K· 24.85 mi
9:39/mi
3:38:03
↓ 200.3%
25.2M
10:35/mi
3:41:42
↑ 13↓ 160.2%
Finish· 26.22 mi
8:23/mi
3:50:15
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:49
Pace8:27 /mi
2nd Half
Distance13.11 mi
Time1:59:26
Pace9:07 /mi
📊Positive Split: 7.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:4626:398:3526:39
8:35
-
10K
6.21 mi11:51:0552:588:3126:19
8:28
-0:07
15K
9.32 mi12:17:131:19:068:2926:08
8:25
-0:03
20K
12.43 mi12:43:181:45:118:2826:05
8:24
-0:01
Half
13.11 mi12:48:561:50:498:275:38
8:15
-0:09
25K
15.53 mi13:09:352:11:288:2820:39
8:31
+0:16
30K
18.64 mi13:38:312:40:248:3628:56
9:19
+0:48
20M
20.00 mi13:51:012:52:548:3912:30
9:12
-0:07
21M
21.00 mi14:01:163:03:098:4310:15
10:15
+1:03
35K
21.75 mi14:07:313:09:248:436:15
8:21
-1:54
23M
23.00 mi14:19:053:20:588:4411:34
9:14
+0:53
24M
24.00 mi14:27:553:29:488:458:50
8:50
-0:24
40K
24.85 mi14:36:103:38:038:468:15
9:39
+0:49
25.2M
25.20 mi14:39:493:41:428:483:39
10:35
+0:56
Finish
26.22 mi14:48:223:50:158:478:33
8:23
-2:12

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

8:15 /mi

Average Pace

8:47 /mi

Slowest Pace

10:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:35:06

67% of race

Time at Slower Pace

1:15:09

33% of race

Average Pace: 8:47 /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 mi11:24:4626:398:3526:39
8:35
#18191
10K
6.21 mi11:51:0552:588:3126:19
8:28
#17647
15K
9.32 mi12:17:131:19:068:2926:08
8:25
#16996
20K
12.43 mi12:43:181:45:118:2826:05
8:24
#16211
Half
13.11 mi12:48:561:50:498:275:38
8:15
#16102
25K
15.53 mi13:09:352:11:288:2820:39
8:31
#15586
30K
18.64 mi13:38:312:40:248:3628:56
9:19
#15365
20M
20.00 mi13:51:012:52:548:3912:30
9:12
#15225
21M
21.00 mi14:01:163:03:098:4310:15
10:15
#15125
35K
21.75 mi14:07:313:09:248:436:15
8:21
#14935
23M
23.00 mi14:19:053:20:588:4411:34
9:14
#14772
24M
24.00 mi14:27:553:29:488:458:50
8:50
#14560
40K
24.85 mi14:36:103:38:038:468:15
9:39
#14496
25.2M
25.20 mi14:39:493:41:428:483:39
10:35
#14460
Finish
26.22 mi14:48:223:50:158:478:33
8:23
#14322
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi181916875687515907(Top 62%)5505(Top 50%)5505(Top 464%)
10K6.21 mi3.10 mi17647+5446526+3496526+34917089(Top 67%)6178(Top 57%)6178(Top 520%)
15K9.32 mi3.11 mi16996+6516140+3866140+38615907(Top 62%)5505(Top 50%)5505(Top 464%)
20K12.43 mi3.11 mi16211+7855697+4435697+44314232(Top 56%)4566(Top 42%)4566(Top 385%)
Half13.11 mi0.68 mi16102+1095641+565641+5614415(Top 56%)4714(Top 43%)4714(Top 397%)
25K15.53 mi2.42 mi15586+5165356+2855356+28513165(Top 52%)4139(Top 38%)4139(Top 349%)
30K18.64 mi3.11 mi15365+2215297+595297+5914680(Top 57%)5249(Top 48%)5249(Top 442%)
20M20.00 mi1.36 mi15225+1405262+355262+3513155(Top 51%)4655(Top 43%)4655(Top 392%)
21M21.00 mi1.00 mi15125+1005247+155247+1513943(Top 55%)5284(Top 48%)5284(Top 445%)
35K21.75 mi0.75 mi14935+1905166+815166+819948(Top 39%)3214(Top 29%)3214(Top 271%)
23M23.00 mi1.25 mi14772+1635133+335133+3312337(Top 48%)4577(Top 42%)4577(Top 386%)
24M24.00 mi1.00 mi14560+2125056+775056+7711317(Top 44%)4073(Top 37%)4073(Top 343%)
40K24.85 mi0.85 mi14496+645054+25054+213717(Top 54%)5392(Top 49%)5392(Top 454%)
25.2M25.20 mi0.35 mi14460+365043+115043+1113136(Top 51%)5157(Top 47%)5157(Top 434%)
Finish26.22 mi1.02 mi14322+1384996+474996+4710942(Top 43%)3963(Top 36%)3963(Top 334%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21story building
+97ft-345ft

Overall

15907

Females

5505

F50-54

5505

5K→10K

3.1 - 6.2 mi

Top 67%
×5story building
+79ft-138ft

Overall

17089

Females

6178

F50-54

6178

10K→15K

6.2 - 9.3 mi

Top 62%
×3story building
+67ft-78ft

Overall

15907

Females

5505

F50-54

5505

15K→20K

9.3 - 12.4 mi

Top 56%
×5story building
+106ft-86ft

Overall

14232

Females

4566

F50-54

4566

20K→Half

12.4 - 13.1 mi

Top 56%
×2story building
+19ft-37ft

Overall

14415

Females

4714

F50-54

4714

Half→25K

13.1 - 15.5 mi

Top 52%
×4story building
+66ft-88ft

Overall

13165

Females

4139

F50-54

4139

25K→30K

15.5 - 18.6 mi

Top 57%
×9story building
+181ft-148ft

Overall

14680

Females

5249

F50-54

5249

30K→20M

18.6 - 20.0 mi

Top 51%
×5story building
+64ft-50ft

Overall

13155

Females

4655

F50-54

4655

20M→21M

20.0 - 21.0 mi

Top 55%
×8story building
+106ft-24ft

Overall

13943

Females

5284

F50-54

5284

21M→35K

21.0 - 21.8 mi

Top 39%
×7story building
+17ft-86ft

Overall

9948

Females

3214

F50-54

3214

35K→23M

21.8 - 23.0 mi

Top 48%
×5story building
+23ft-63ft

Overall

12337

Females

4577

F50-54

4577

23M→24M

23.0 - 24.0 mi

Top 44%
×6story building
+12ft-82ft

Overall

11317

Females

4073

F50-54

4073

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

13717

Females

5392

F50-54

5392

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

13136

Females

5157

F50-54

5157

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2story building
+22ft-21ft

Overall

10942

Females

3963

F50-54

3963

Passing Analysis

Category:
Athletes Passed
4401
Passed By
532
Net Change
+3869
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18191
5K → 10K62278+544#18191#17647
10K → 15K68130+651#17647#16996
15K → 20K7949+785#16996#16211
20K → Half1123+109#16211#16102
Half → 25K52913+516#16102#15586
25K → 30K368147+221#15586#15365
30K → 20M17939+140#15365#15225
20M → 21M16969+100#15225#15125
21M → 35K1922+190#15125#14935
35K → 23M21249+163#14935#14772
23M → 24M2197+212#14772#14560
24M → 40K11551+64#14560#14496
40K → 25.2M5620+36#14496#14460
25.2M → Finish15315+138#14460#14322
TOTALS4401532+3869
📊

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