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BOSTON MARATHON 2023

Margaret Sprock

Bib: 14172•F

MD

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 15%
Gender (Female)
#0 / 11423
Top 2%
Division (F18-39)
#0 / 4884
Top 4%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ 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
7:01/mi
21:49
↑ 97↓ 3451.5%
10K· 6.21 mi
6:42/mi
42:39
↑ 79↓ 1380.4%
15K· 9.32 mi
6:35/mi
1:03:05
↑ 67↓ 78
20K· 12.43 mi
6:37/mi
1:23:38
↑ 106↓ 860.1%
Half· 13.11 mi
6:33/mi
1:28:06
↑ 19↓ 370.5%
25K· 15.53 mi
6:43/mi
1:44:24
↑ 66↓ 880.2%
30K· 18.64 mi
6:48/mi
2:05:33
↑ 181↓ 1480.2%
20M
6:48/mi
2:14:47
↑ 64↓ 500.2%
21M
7:12/mi
2:21:59
↑ 106↓ 241.6%
35K· 21.75 mi
6:45/mi
2:27:02
↑ 17↓ 861.7%
23M
7:10/mi
2:36:00
↑ 23↓ 630.6%
24M
7:09/mi
2:43:09
↓ 821.3%
40K· 24.85 mi
7:15/mi
2:49:21
↓ 200.3%
25.2M
7:50/mi
2:52:03
↑ 13↓ 160.2%
Finish· 26.22 mi
7:04/mi
2:59:15
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:06
Pace6:43 /mi
2nd Half
Distance13.11 mi
Time1:31:09
Pace6:57 /mi
📊Positive Split: 3.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:2921:497:0121:49
7:01
-
10K
6.21 mi11:11:1942:396:5220:50
6:42
-0:19
15K
9.32 mi11:31:451:03:056:4620:26
6:35
-0:07
20K
12.43 mi11:52:181:23:386:4420:33
6:37
+0:02
Half
13.11 mi11:56:461:28:066:434:28
6:33
-0:04
25K
15.53 mi12:13:041:44:246:4316:18
6:43
+0:10
30K
18.64 mi12:34:132:05:336:4421:09
6:48
+0:05
20M
20.00 mi12:43:272:14:476:449:14
6:48
0:00
21M
21.00 mi12:50:392:21:596:467:12
7:12
+0:24
35K
21.75 mi12:55:422:27:026:465:03
6:45
-0:27
23M
23.00 mi13:04:402:36:006:478:58
7:10
+0:25
24M
24.00 mi13:11:492:43:096:487:09
7:09
-0:01
40K
24.85 mi13:18:012:49:216:496:12
7:15
+0:06
25.2M
25.20 mi13:20:432:52:036:502:42
7:50
+0:35
Finish
26.22 mi13:27:552:59:156:507:12
7:04
-0:46

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

6:33 /mi

Average Pace

6:50 /mi

Slowest Pace

7:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:50:21

95% of race

Time at Steady Pace

6:12

3% of race

Time at Slower Pace

2:42

2% of race

Average Pace: 6:50 /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 mi10:50:2921:497:0121:49
7:01
#6396
10K
6.21 mi11:11:1942:396:5220:50
6:42
#5545
15K
9.32 mi11:31:451:03:056:4620:26
6:35
#4693
20K
12.43 mi11:52:181:23:386:4420:33
6:37
#4170
Half
13.11 mi11:56:461:28:066:434:28
6:33
#4096
25K
15.53 mi12:13:041:44:246:4316:18
6:43
#3975
30K
18.64 mi12:34:132:05:336:4421:09
6:48
#3736
20M
20.00 mi12:43:272:14:476:449:14
6:48
#3613
21M
21.00 mi12:50:392:21:596:467:12
7:12
#3552
35K
21.75 mi12:55:422:27:026:465:03
6:45
#3541
23M
23.00 mi13:04:402:36:006:478:58
7:10
#3589
24M
24.00 mi13:11:492:43:096:487:09
7:09
#3711
40K
24.85 mi13:18:012:49:216:496:12
7:15
#3787
25.2M
25.20 mi13:20:432:52:036:502:42
7:50
#3827
Finish
26.22 mi13:27:552:59:156:507:12
7:04
#3948
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi63965775773132(Top 12%)147(Top 1%)147(Top 3%)
10K6.21 mi3.10 mi5545+851424+153424+1534409(Top 17%)278(Top 2%)278(Top 6%)
15K9.32 mi3.11 mi4693+852315+109315+1093132(Top 12%)147(Top 1%)147(Top 3%)
20K12.43 mi3.11 mi4170+523253+62253+622964(Top 11%)139(Top 1%)139(Top 3%)
Half13.11 mi0.68 mi4096+74250+3250+33150(Top 12%)146(Top 1%)146(Top 3%)
25K15.53 mi2.42 mi3975+121230+20230+203572(Top 13%)200(Top 2%)200(Top 4%)
30K18.64 mi3.11 mi3736+239204+26204+263044(Top 11%)166(Top 1%)166(Top 3%)
20M20.00 mi1.36 mi3613+123194+10194+102821(Top 11%)161(Top 1%)161(Top 3%)
21M21.00 mi1.00 mi3552+61186+8186+83143(Top 12%)201(Top 2%)201(Top 4%)
35K21.75 mi0.75 mi3541+11185+1185+13929(Top 15%)311(Top 3%)311(Top 6%)
23M23.00 mi1.25 mi3589-48198-13198-134619(Top 17%)439(Top 4%)439(Top 9%)
24M24.00 mi1.00 mi3711-122215-17215-175483(Top 21%)708(Top 6%)708(Top 14%)
40K24.85 mi0.85 mi3787-76226-11226-115178(Top 19%)703(Top 6%)703(Top 14%)
25.2M25.20 mi0.35 mi3827-40229-3229-35589(Top 21%)902(Top 8%)902(Top 18%)
Finish26.22 mi1.02 mi3948-121251-22251-225632(Top 21%)945(Top 8%)945(Top 19%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21story building
+97ft-345ft

Overall

3132

Females

147

F18-39

147

5K→10K

3.1 - 6.2 mi

Top 17%
×5story building
+79ft-138ft

Overall

4409

Females

278

F18-39

278

10K→15K

6.2 - 9.3 mi

Top 12%
×3story building
+67ft-78ft

Overall

3132

Females

147

F18-39

147

15K→20K

9.3 - 12.4 mi

Top 11%
×5story building
+106ft-86ft

Overall

2964

Females

139

F18-39

139

20K→Half

12.4 - 13.1 mi

Top 12%
×2story building
+19ft-37ft

Overall

3150

Females

146

F18-39

146

Half→25K

13.1 - 15.5 mi

Top 13%
×4story building
+66ft-88ft

Overall

3572

Females

200

F18-39

200

25K→30K

15.5 - 18.6 mi

Top 11%
×9story building
+181ft-148ft

Overall

3044

Females

166

F18-39

166

30K→20M

18.6 - 20.0 mi

Top 11%
×5story building
+64ft-50ft

Overall

2821

Females

161

F18-39

161

20M→21M

20.0 - 21.0 mi

Top 12%
×8story building
+106ft-24ft

Overall

3143

Females

201

F18-39

201

21M→35K

21.0 - 21.8 mi

Top 15%
×7story building
+17ft-86ft

Overall

3929

Females

311

F18-39

311

35K→23M

21.8 - 23.0 mi

Top 17%
×5story building
+23ft-63ft

Overall

4619

Females

439

F18-39

439

23M→24M

23.0 - 24.0 mi

Top 21%
×6story building
+12ft-82ft

Overall

5483

Females

708

F18-39

708

24M→40K

24.0 - 24.9 mi

Top 19%
×1story
+6ft-20ft

Overall

5178

Females

703

F18-39

703

40K→25.2M

24.9 - 25.2 mi

Top 21%
×1story
+13ft-16ft

Overall

5589

Females

902

F18-39

902

25.2M→Finish

25.2 - 26.2 mi

Top 21%
×2story building
+22ft-21ft

Overall

5632

Females

945

F18-39

945

Passing Analysis

Category:
Athletes Passed
3098
Passed By
650
Net Change
+2448
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6396
5K → 10K86413+851#6396#5545
10K → 15K8520+852#5545#4693
15K → 20K5230+523#4693#4170
20K → Half762+74#4170#4096
Half → 25K14221+121#4096#3975
25K → 30K26122+239#3975#3736
30K → 20M1296+123#3736#3613
20M → 21M8322+61#3613#3552
21M → 35K4231+11#3552#3541
35K → 23M4997-48#3541#3589
23M → 24M13135-122#3589#3711
24M → 40K34110-76#3711#3787
40K → 25.2M1454-40#3787#3827
25.2M → Finish16137-121#3827#3948
TOTALS3098650+2448
📊

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