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BOSTON MARATHON 2023

Marike Van Niekerk

Bib: 11436•F

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
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
14:16/mi
44:19
↑ 97↓ 3451.5%
10K· 6.21 mi
10:48/mi
1:17:53
↑ 79↓ 1380.4%
15K· 9.32 mi
10:07/mi
1:49:20
↑ 67↓ 78
20K· 12.43 mi
10:20/mi
2:21:25
↑ 106↓ 860.1%
Half· 13.11 mi
10:10/mi
2:28:21
↑ 19↓ 370.5%
25K· 15.53 mi
11:22/mi
2:55:55
↑ 66↓ 880.2%
30K· 18.64 mi
11:51/mi
3:32:44
↑ 181↓ 1480.2%
20M
11:18/mi
3:48:06
↑ 64↓ 500.2%
21M
12:17/mi
4:00:23
↑ 106↓ 241.6%
35K· 21.75 mi
11:18/mi
4:08:50
↑ 17↓ 861.7%
23M
11:41/mi
4:23:28
↑ 23↓ 630.6%
24M
11:30/mi
4:34:58
↓ 821.3%
40K· 24.85 mi
13:36/mi
4:46:36
↓ 200.3%
25.2M
12:28/mi
4:50:54
↑ 13↓ 160.2%
Finish· 26.22 mi
11:51/mi
5:02:59
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:28:21
Pace11:19 /mi
2nd Half
Distance13.11 mi
Time2:34:38
Pace11:48 /mi
📊Positive Split: 4.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:0544:1914:1644:19
14:16
-
10K
6.21 mi11:48:391:17:5312:3233:34
10:48
-3:28
15K
9.32 mi12:20:061:49:2011:4431:27
10:07
-0:41
20K
12.43 mi12:52:112:21:2511:2332:05
10:20
+0:13
Half
13.11 mi12:59:072:28:2111:196:56
10:10
-0:10
25K
15.53 mi13:26:412:55:5511:1927:34
11:22
+1:12
30K
18.64 mi14:03:303:32:4411:2536:49
11:51
+0:29
20M
20.00 mi14:18:523:48:0611:2415:22
11:18
-0:33
21M
21.00 mi14:31:094:00:2311:2712:17
12:17
+0:59
35K
21.75 mi14:39:364:08:5011:278:27
11:18
-0:59
23M
23.00 mi14:54:144:23:2811:2714:38
11:41
+0:23
24M
24.00 mi15:05:444:34:5811:2711:30
11:30
-0:11
40K
24.85 mi15:17:224:46:3611:3211:38
13:36
+2:06
25.2M
25.20 mi15:21:404:50:5411:334:18
12:28
-1:08
Finish
26.22 mi15:33:455:02:5911:3412:05
11:51
-0:37

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

10:07 /mi

Average Pace

11:34 /mi

Slowest Pace

14:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:44:02

34% of race

Time at Steady Pace

2:06:25

42% of race

Time at Slower Pace

1:12:32

24% of race

Average Pace: 11:33 /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 mi11:15:0544:1914:1644:19
14:16
#26614
10K
6.21 mi11:48:391:17:5312:3233:34
10:48
#26523
15K
9.32 mi12:20:061:49:2011:4431:27
10:07
#26131
20K
12.43 mi12:52:112:21:2511:2332:05
10:20
#25681
Half
13.11 mi12:59:072:28:2111:196:56
10:10
#25590
25K
15.53 mi13:26:412:55:5511:1927:34
11:22
#25412
30K
18.64 mi14:03:303:32:4411:2536:49
11:51
#25235
20M
20.00 mi14:18:523:48:0611:2415:22
11:18
#25115
21M
21.00 mi14:31:094:00:2311:2712:17
12:17
#25036
35K
21.75 mi14:39:364:08:5011:278:27
11:18
#25002
23M
23.00 mi14:54:144:23:2811:2714:38
11:41
#24933
24M
24.00 mi15:05:444:34:5811:2711:30
11:30
#24898
40K
24.85 mi15:17:224:46:3611:3211:38
13:36
#24956
25.2M
25.20 mi15:21:404:50:5411:334:18
12:28
#24938
Finish
26.22 mi15:33:455:02:5911:3412:05
11:51
#24958
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi26614114211142123747(Top 89%)9750(Top 85%)9750(Top 200%)
10K6.21 mi3.10 mi26523+9111376+4511376+4525192(Top 95%)10545(Top 92%)10545(Top 216%)
15K9.32 mi3.11 mi26131+39211121+25511121+25523747(Top 89%)9750(Top 85%)9750(Top 200%)
20K12.43 mi3.11 mi25681+45010861+26010861+26023526(Top 88%)9647(Top 84%)9647(Top 198%)
Half13.11 mi0.68 mi25590+9110802+5910802+5923624(Top 89%)9698(Top 85%)9698(Top 199%)
25K15.53 mi2.42 mi25412+17810706+9610706+9624509(Top 92%)10235(Top 90%)10235(Top 210%)
30K18.64 mi3.11 mi25235+17710619+8710619+8724326(Top 91%)10181(Top 89%)10181(Top 208%)
20M20.00 mi1.36 mi25115+12010563+5610563+5623206(Top 87%)9633(Top 84%)9633(Top 197%)
21M21.00 mi1.00 mi25036+7910524+3910524+3923183(Top 87%)9647(Top 84%)9647(Top 198%)
35K21.75 mi0.75 mi25002+3410517+710517+723807(Top 89%)10045(Top 88%)10045(Top 206%)
23M23.00 mi1.25 mi24933+6910485+3210485+3223566(Top 89%)9886(Top 87%)9886(Top 202%)
24M24.00 mi1.00 mi24898+3510472+1310472+1323880(Top 90%)10100(Top 88%)10100(Top 207%)
40K24.85 mi0.85 mi24956-5810507-3510507-3525426(Top 96%)10882(Top 95%)10882(Top 223%)
25.2M25.20 mi0.35 mi24938+1810501+610501+623271(Top 87%)9817(Top 86%)9817(Top 201%)
Finish26.22 mi1.02 mi24958-2010516-1510516-1525111(Top 94%)10718(Top 94%)10718(Top 219%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 89%
×21story building
+97ft-345ft

Overall

23747

Females

9750

F18-39

9750

5K→10K

3.1 - 6.2 mi

Top 95%
×5story building
+79ft-138ft

Overall

25192

Females

10545

F18-39

10545

10K→15K

6.2 - 9.3 mi

Top 89%
×3story building
+67ft-78ft

Overall

23747

Females

9750

F18-39

9750

15K→20K

9.3 - 12.4 mi

Top 88%
×5story building
+106ft-86ft

Overall

23526

Females

9647

F18-39

9647

20K→Half

12.4 - 13.1 mi

Top 89%
×2story building
+19ft-37ft

Overall

23624

Females

9698

F18-39

9698

Half→25K

13.1 - 15.5 mi

Top 92%
×4story building
+66ft-88ft

Overall

24509

Females

10235

F18-39

10235

25K→30K

15.5 - 18.6 mi

Top 91%
×9story building
+181ft-148ft

Overall

24326

Females

10181

F18-39

10181

30K→20M

18.6 - 20.0 mi

Top 87%
×5story building
+64ft-50ft

Overall

23206

Females

9633

F18-39

9633

20M→21M

20.0 - 21.0 mi

Top 87%
×8story building
+106ft-24ft

Overall

23183

Females

9647

F18-39

9647

21M→35K

21.0 - 21.8 mi

Top 89%
×7story building
+17ft-86ft

Overall

23807

Females

10045

F18-39

10045

35K→23M

21.8 - 23.0 mi

Top 89%
×5story building
+23ft-63ft

Overall

23566

Females

9886

F18-39

9886

23M→24M

23.0 - 24.0 mi

Top 90%
×6story building
+12ft-82ft

Overall

23880

Females

10100

F18-39

10100

24M→40K

24.0 - 24.9 mi

Top 96%
×1story
+6ft-20ft

Overall

25426

Females

10882

F18-39

10882

40K→25.2M

24.9 - 25.2 mi

Top 87%
×1story
+13ft-16ft

Overall

23271

Females

9817

F18-39

9817

25.2M→Finish

25.2 - 26.2 mi

Top 94%
×2story building
+22ft-21ft

Overall

25111

Females

10718

F18-39

10718

Passing Analysis

Category:
Athletes Passed
1806
Passed By
150
Net Change
+1656
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26614
5K → 10K921+91#26614#26523
10K → 15K3920+392#26523#26131
15K → 20K4500+450#26131#25681
20K → Half910+91#25681#25590
Half → 25K1835+178#25590#25412
25K → 30K18912+177#25412#25235
30K → 20M1233+120#25235#25115
20M → 21M823+79#25115#25036
21M → 35K406+34#25036#25002
35K → 23M723+69#25002#24933
23M → 24M449+35#24933#24898
24M → 40K1371-58#24898#24956
40K → 25.2M202+18#24956#24938
25.2M → Finish1535-20#24938#24958
TOTALS1806150+1656
📊

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