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BOSTON MARATHON 2023

Sarah Vanderveen

Bib: 20457•F

MB

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F40-44)
#0 / 1878
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
9:34/mi
29:42
↑ 97↓ 3451.5%
10K· 6.21 mi
9:07/mi
58:03
↑ 79↓ 1380.4%
15K· 9.32 mi
9:32/mi
1:27:39
↑ 67↓ 78
20K· 12.43 mi
9:30/mi
1:57:11
↑ 106↓ 860.1%
Half· 13.11 mi
8:56/mi
2:03:17
↑ 19↓ 370.5%
25K· 15.53 mi
10:11/mi
2:27:59
↑ 66↓ 880.2%
30K· 18.64 mi
9:39/mi
2:57:59
↑ 181↓ 1480.2%
20M
9:14/mi
3:10:32
↑ 64↓ 500.2%
21M
9:32/mi
3:20:04
↑ 106↓ 241.6%
35K· 21.75 mi
9:08/mi
3:26:54
↑ 17↓ 861.7%
23M
9:39/mi
3:38:59
↑ 23↓ 630.6%
24M
9:34/mi
3:48:33
↓ 821.3%
40K· 24.85 mi
9:35/mi
3:56:45
↓ 200.3%
25.2M
9:43/mi
4:00:06
↑ 13↓ 160.2%
Finish· 26.22 mi
8:56/mi
4:09:12
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:03:17
Pace9:24 /mi
2nd Half
Distance13.11 mi
Time2:05:55
Pace9:36 /mi
📊Positive Split: 2.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:4229:429:3429:42
9:34
-
10K
6.21 mi12:15:0358:039:2128:21
9:07
-0:27
15K
9.32 mi12:44:391:27:399:2429:36
9:32
+0:25
20K
12.43 mi13:14:111:57:119:2629:32
9:30
-0:02
Half
13.11 mi13:20:172:03:179:246:06
8:56
-0:34
25K
15.53 mi13:44:592:27:599:3224:42
10:11
+1:15
30K
18.64 mi14:14:592:57:599:3330:00
9:39
-0:32
20M
20.00 mi14:27:323:10:329:3212:33
9:14
-0:25
21M
21.00 mi14:37:043:20:049:329:32
9:32
+0:18
35K
21.75 mi14:43:543:26:549:316:50
9:08
-0:24
23M
23.00 mi14:55:593:38:599:3112:05
9:39
+0:31
24M
24.00 mi15:05:333:48:339:319:34
9:34
-0:05
40K
24.85 mi15:13:453:56:459:328:12
9:35
+0:01
25.2M
25.20 mi15:17:064:00:069:323:21
9:43
+0:08
Finish
26.22 mi15:26:124:09:129:319:06
8:56
-0:47

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

8:56 /mi

Average Pace

9:31 /mi

Slowest Pace

10:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:44:30

90% of race

Time at Steady Pace

24:42

10% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:30 /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 mi11:46:4229:429:3429:42
9:34
#22272
10K
6.21 mi12:15:0358:039:2128:21
9:07
#21866
15K
9.32 mi12:44:391:27:399:2429:36
9:32
#22000
20K
12.43 mi13:14:111:57:119:2629:32
9:30
#21893
Half
13.11 mi13:20:172:03:179:246:06
8:56
#21819
25K
15.53 mi13:44:592:27:599:3224:42
10:11
#21960
30K
18.64 mi14:14:592:57:599:3330:00
9:39
#21616
20M
20.00 mi14:27:323:10:329:3212:33
9:14
#21367
21M
21.00 mi14:37:043:20:049:329:32
9:32
#21123
35K
21.75 mi14:43:543:26:549:316:50
9:08
#21021
23M
23.00 mi14:55:593:38:599:3112:05
9:39
#20862
24M
24.00 mi15:05:333:48:339:319:34
9:34
#20793
40K
24.85 mi15:13:453:56:459:328:12
9:35
#20711
25.2M
25.20 mi15:17:064:00:069:323:21
9:43
#20656
Finish
26.22 mi15:26:124:09:129:319:06
8:56
#20563
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi222729014901422336(Top 84%)8974(Top 79%)8974(Top 478%)
10K6.21 mi3.10 mi21866+4068779+2358779+23521381(Top 80%)8486(Top 74%)8486(Top 452%)
15K9.32 mi3.11 mi22000-1348839-608839-6022336(Top 84%)8974(Top 79%)8974(Top 478%)
20K12.43 mi3.11 mi21893+1078773+668773+6621579(Top 81%)8564(Top 75%)8564(Top 456%)
Half13.11 mi0.68 mi21819+748724+498724+4920243(Top 76%)7814(Top 68%)7814(Top 416%)
25K15.53 mi2.42 mi21960-1418802-788802-7822580(Top 85%)9159(Top 80%)9159(Top 488%)
30K18.64 mi3.11 mi21616+3448621+1818621+18119994(Top 75%)7766(Top 68%)7766(Top 414%)
20M20.00 mi1.36 mi21367+2498501+1208501+12017756(Top 67%)6620(Top 58%)6620(Top 353%)
21M21.00 mi1.00 mi21123+2448386+1158386+11516160(Top 61%)5727(Top 50%)5727(Top 305%)
35K21.75 mi0.75 mi21021+1028336+508336+5018525(Top 70%)7133(Top 62%)7133(Top 380%)
23M23.00 mi1.25 mi20862+1598257+798257+7918923(Top 71%)7367(Top 64%)7367(Top 392%)
24M24.00 mi1.00 mi20793+698227+308227+3019461(Top 73%)7700(Top 67%)7700(Top 410%)
40K24.85 mi0.85 mi20711+828193+348193+3418682(Top 70%)7323(Top 64%)7323(Top 390%)
25.2M25.20 mi0.35 mi20656+558167+268167+2616288(Top 61%)6055(Top 53%)6055(Top 322%)
Finish26.22 mi1.02 mi20563+938121+468121+4617658(Top 66%)6743(Top 59%)6743(Top 359%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 84%
×21story building
+97ft-345ft

Overall

22336

Females

8974

F40-44

8974

5K→10K

3.1 - 6.2 mi

Top 80%
×5story building
+79ft-138ft

Overall

21381

Females

8486

F40-44

8486

10K→15K

6.2 - 9.3 mi

Top 84%
×3story building
+67ft-78ft

Overall

22336

Females

8974

F40-44

8974

15K→20K

9.3 - 12.4 mi

Top 81%
×5story building
+106ft-86ft

Overall

21579

Females

8564

F40-44

8564

20K→Half

12.4 - 13.1 mi

Top 76%
×2story building
+19ft-37ft

Overall

20243

Females

7814

F40-44

7814

Half→25K

13.1 - 15.5 mi

Top 85%
×4story building
+66ft-88ft

Overall

22580

Females

9159

F40-44

9159

25K→30K

15.5 - 18.6 mi

Top 75%
×9story building
+181ft-148ft

Overall

19994

Females

7766

F40-44

7766

30K→20M

18.6 - 20.0 mi

Top 67%
×5story building
+64ft-50ft

Overall

17756

Females

6620

F40-44

6620

20M→21M

20.0 - 21.0 mi

Top 61%
×8story building
+106ft-24ft

Overall

16160

Females

5727

F40-44

5727

21M→35K

21.0 - 21.8 mi

Top 70%
×7story building
+17ft-86ft

Overall

18525

Females

7133

F40-44

7133

35K→23M

21.8 - 23.0 mi

Top 71%
×5story building
+23ft-63ft

Overall

18923

Females

7367

F40-44

7367

23M→24M

23.0 - 24.0 mi

Top 73%
×6story building
+12ft-82ft

Overall

19461

Females

7700

F40-44

7700

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

18682

Females

7323

F40-44

7323

40K→25.2M

24.9 - 25.2 mi

Top 61%
×1story
+13ft-16ft

Overall

16288

Females

6055

F40-44

6055

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2story building
+22ft-21ft

Overall

17658

Females

6743

F40-44

6743

Passing Analysis

Category:
Athletes Passed
2413
Passed By
704
Net Change
+1709
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22272
5K → 10K515109+406#22272#21866
10K → 15K114248-134#21866#22000
15K → 20K19083+107#22000#21893
20K → Half784+74#21893#21819
Half → 25K61202-141#21819#21960
25K → 30K35915+344#21960#21616
30K → 20M2490+249#21616#21367
20M → 21M2451+244#21367#21123
21M → 35K1064+102#21123#21021
35K → 23M1689+159#21021#20862
23M → 24M789+69#20862#20793
24M → 40K9210+82#20793#20711
40K → 25.2M572+55#20711#20656
25.2M → Finish1018+93#20656#20563
TOTALS2413704+1709
📊

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