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BOSTON MARATHON 2025

Kelly Van Niekerk

Bib: 16047•F

NS

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 21%
Gender (Female)
#0 / 12228
Top 5%
Masters (Masters Women)
#0 / 6759
Top 1%
Division (F40-44)
#0 / 1718
Top 3%
Race Day Weather
50°/40°F
broken 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
7:09/mi
22:14
↑ 97↓ 3451.5%
10K· 6.21 mi
7:05/mi
44:13
↑ 79↓ 1380.4%
15K· 9.32 mi
7:06/mi
1:06:16
↑ 67↓ 78
20K· 12.43 mi
7:07/mi
1:28:22
↑ 106↓ 860.1%
Half· 13.11 mi
7:01/mi
1:33:09
↑ 19↓ 370.5%
25K· 15.53 mi
7:05/mi
1:50:19
↑ 66↓ 880.2%
30K· 18.64 mi
7:14/mi
2:12:47
↑ 181↓ 1480.2%
20M
7:12/mi
2:22:34
↑ 64↓ 500.2%
21M
7:30/mi
2:30:04
↑ 106↓ 241.6%
35K· 21.75 mi
6:53/mi
2:35:13
↑ 17↓ 861.7%
23M
6:59/mi
2:43:58
↑ 23↓ 630.6%
24M
6:48/mi
2:50:46
↓ 821.3%
40K· 24.85 mi
6:47/mi
2:56:34
↓ 200.3%
25.2M
7:32/mi
2:59:10
↑ 13↓ 160.2%
Finish· 26.22 mi
6:42/mi
3:06:00
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:33:09
Pace7:06 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:32:51
Pace7:05 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:56:1222:147:0922:14
7:09
-
10K
6.21 mi11:18:1144:137:0721:59
7:05
-0:04
15K
9.32 mi11:40:141:06:167:0722:03
7:06
+0:01
20K
12.43 mi12:02:201:28:227:0722:06
7:07
+0:01
Half
13.11 mi12:07:071:33:097:064:47
7:01
-0:06
25K
15.53 mi12:24:171:50:197:0617:10
7:05
+0:04
30K
18.64 mi12:46:452:12:477:0722:28
7:14
+0:09
20M
20.00 mi12:56:322:22:347:089:47
7:12
-0:02
21M
21.00 mi13:04:022:30:047:097:30
7:30
+0:18
35K
21.75 mi13:09:112:35:137:085:09
6:53
-0:37
23M
23.00 mi13:17:562:43:587:088:45
6:59
+0:06
24M
24.00 mi13:24:442:50:467:076:48
6:48
-0:11
40K
24.85 mi13:30:322:56:347:065:48
6:47
-0:01
25.2M
25.20 mi13:33:082:59:107:072:36
7:32
+0:45
Finish
26.22 mi13:39:583:06:007:066:50
6:42
-0:50

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

6:42 /mi

Average Pace

7:06 /mi

Slowest Pace

7:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:55:54

95% of race

Time at Steady Pace

10:06

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:06 /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 mi10:56:1222:147:0922:14
7:09
#9114
10K
6.21 mi11:18:1144:137:0721:59
7:05
#8756
15K
9.32 mi11:40:141:06:167:0722:03
7:06
#8567
20K
12.43 mi12:02:201:28:227:0722:06
7:07
#8250
Half
13.11 mi12:07:071:33:097:064:47
7:01
#8209
25K
15.53 mi12:24:171:50:197:0617:10
7:05
#7934
30K
18.64 mi12:46:452:12:477:0722:28
7:14
#7500
20M
20.00 mi12:56:322:22:347:089:47
7:12
#7251
21M
21.00 mi13:04:022:30:047:097:30
7:30
#7031
35K
21.75 mi13:09:112:35:137:085:09
6:53
#6904
23M
23.00 mi13:17:562:43:587:088:45
6:59
#6588
24M
24.00 mi13:24:442:50:467:076:48
6:48
#6402
40K
24.85 mi13:30:322:56:347:065:48
6:47
#6218
25.2M
25.20 mi13:33:082:59:107:072:36
7:32
#6144
Finish
26.22 mi13:39:583:06:007:066:50
6:42
#5985
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi9114141014108327(Top 29%)1168(Top 10%)1168(Top 68%)
10K6.21 mi3.10 mi8756+3581275+1351275+1358479(Top 30%)1172(Top 10%)1172(Top 68%)
15K9.32 mi3.11 mi8567+1891213+621213+628327(Top 29%)1168(Top 10%)1168(Top 68%)
20K12.43 mi3.11 mi8250+3171126+871126+877609(Top 27%)967(Top 8%)967(Top 56%)
Half13.11 mi0.68 mi8209+411110+161110+167704(Top 27%)965(Top 8%)965(Top 56%)
25K15.53 mi2.42 mi7934+2751021+891021+896859(Top 24%)819(Top 7%)819(Top 48%)
30K18.64 mi3.11 mi7500+434917+104917+1046083(Top 21%)697(Top 6%)697(Top 41%)
20M20.00 mi1.36 mi7251+249878+39878+395218(Top 18%)566(Top 5%)566(Top 33%)
21M21.00 mi1.00 mi7031+220839+39839+394637(Top 16%)520(Top 4%)520(Top 30%)
35K21.75 mi0.75 mi6904+127819+20819+204682(Top 16%)525(Top 4%)525(Top 31%)
23M23.00 mi1.25 mi6588+316767+52767+523728(Top 13%)359(Top 3%)359(Top 21%)
24M24.00 mi1.00 mi6402+186728+39728+393556(Top 13%)365(Top 3%)365(Top 21%)
40K24.85 mi0.85 mi6218+184700+28700+282801(Top 10%)257(Top 2%)257(Top 15%)
25.2M25.20 mi0.35 mi6144+74687+13687+133677(Top 13%)479(Top 4%)479(Top 28%)
Finish26.22 mi1.02 mi5985+159665+22665+223945(Top 14%)537(Top 4%)537(Top 31%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 29%
×21story building
+97ft-345ft

Overall

8327

Females

1168

F40-44

1168

5K→10K

3.1 - 6.2 mi

Top 30%
×5story building
+79ft-138ft

Overall

8479

Females

1172

F40-44

1172

10K→15K

6.2 - 9.3 mi

Top 29%
×3story building
+67ft-78ft

Overall

8327

Females

1168

F40-44

1168

15K→20K

9.3 - 12.4 mi

Top 27%
×5story building
+106ft-86ft

Overall

7609

Females

967

F40-44

967

20K→Half

12.4 - 13.1 mi

Top 27%
×2story building
+19ft-37ft

Overall

7704

Females

965

F40-44

965

Half→25K

13.1 - 15.5 mi

Top 24%
×4story building
+66ft-88ft

Overall

6859

Females

819

F40-44

819

25K→30K

15.5 - 18.6 mi

Top 21%
×9story building
+181ft-148ft

Overall

6083

Females

697

F40-44

697

30K→20M

18.6 - 20.0 mi

Top 18%
×5story building
+64ft-50ft

Overall

5218

Females

566

F40-44

566

20M→21M

20.0 - 21.0 mi

Top 16%
×8story building
+106ft-24ft

Overall

4637

Females

520

F40-44

520

21M→35K

21.0 - 21.8 mi

Top 16%
×7story building
+17ft-86ft

Overall

4682

Females

525

F40-44

525

35K→23M

21.8 - 23.0 mi

Top 13%
×5story building
+23ft-63ft

Overall

3728

Females

359

F40-44

359

23M→24M

23.0 - 24.0 mi

Top 13%
×6story building
+12ft-82ft

Overall

3556

Females

365

F40-44

365

24M→40K

24.0 - 24.9 mi

Top 10%
×1story
+6ft-20ft

Overall

2801

Females

257

F40-44

257

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3677

Females

479

F40-44

479

25.2M→Finish

25.2 - 26.2 mi

Top 14%
×2story building
+22ft-21ft

Overall

3945

Females

537

F40-44

537

Passing Analysis

Category:
Athletes Passed
3383
Passed By
254
Net Change
+3129
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9114
5K → 10K43577+358#9114#8756
10K → 15K27081+189#8756#8567
15K → 20K34629+317#8567#8250
20K → Half454+41#8250#8209
Half → 25K28914+275#8209#7934
25K → 30K45319+434#7934#7500
30K → 20M2556+249#7500#7251
20M → 21M2266+220#7251#7031
21M → 35K1325+127#7031#6904
35K → 23M3160+316#6904#6588
23M → 24M1882+186#6588#6402
24M → 40K1840+184#6402#6218
40K → 25.2M762+74#6218#6144
25.2M → Finish1689+159#6144#5985
TOTALS3383254+3129
📊

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