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BOSTON MARATHON 2025

Nadine Pretorius

Bib: 19964•F

BC

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 37%
Masters (Masters Women)
#0 / 6759
Top 23%
Division (F40-44)
#0 / 1718
Top 46%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:49
Rank: #13678
Start → 5K
23:49 | 7:40/mi
10K· 6.21 mi
47:21
Rank: #13227 (+451)
5K → 10K
23:32 | 7:34/mi
15K· 9.32 mi
1:11:38
Rank: #13626 (-399)
10K → 15K
24:17 | 7:49/mi
20K· 12.43 mi
1:36:29
Rank: #13939 (-313)
15K → 20K
24:51 | 8:00/mi
Half· 13.11 mi
1:41:54
Rank: #14022 (-83)
20K → Half
5:25 | 7:56/mi
25K· 15.53 mi
2:01:41
Rank: #14163 (-141)
Half → 25K
19:47 | 8:10/mi
30K· 18.64 mi
2:28:38
Rank: #14481 (-318)
25K → 30K
26:57 | 8:40/mi
20M
2:40:44
Rank: #14645 (-164)
30K → 20M
12:06 | 8:54/mi
21M
2:50:27
Rank: #14786 (-141)
20M → 21M
9:43 | 9:43/mi
35K· 21.75 mi
2:56:46
Rank: #14767 (+19)
21M → 35K
6:19 | 8:27/mi
23M
3:08:00
Rank: #14831 (-64)
35K → 23M
11:14 | 8:58/mi
24M
3:16:29
Rank: #14791 (+40)
23M → 24M
8:29 | 8:29/mi
40K· 24.85 mi
3:23:44
Rank: #14719 (+72)
24M → 40K
7:15 | 8:29/mi
25.2M
3:26:45
Rank: #14630 (+89)
40K → 25.2M
3:01 | 8:45/mi
Finish· 26.22 mi
3:34:40
Rank: #14479 (+151)
25.2M → Finish
7:55 | 7:46/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:54
Pace7:46 /mi
2nd Half
Distance13.11 mi
Time1:52:46
Pace8:36 /mi
📊Positive Split: 10.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:1023:497:4023:49
7:40
-
10K
6.21 mi11:38:4247:217:3723:32
7:34
-0:06
15K
9.32 mi12:02:591:11:387:4124:17
7:49
+0:15
20K
12.43 mi12:27:501:36:297:4624:51
8:00
+0:11
Half
13.11 mi12:33:151:41:547:465:25
7:56
-0:04
25K
15.53 mi12:53:022:01:417:5019:47
8:10
+0:14
30K
18.64 mi13:19:592:28:387:5826:57
8:40
+0:30
20M
20.00 mi13:32:052:40:448:0212:06
8:54
+0:14
21M
21.00 mi13:41:482:50:278:079:43
9:43
+0:49
35K
21.75 mi13:48:072:56:468:086:19
8:27
-1:16
23M
23.00 mi13:59:213:08:008:1011:14
8:58
+0:31
24M
24.00 mi14:07:503:16:298:118:29
8:29
-0:29
40K
24.85 mi14:15:053:23:448:127:15
8:29
0:00
25.2M
25.20 mi14:18:063:26:458:123:01
8:45
+0:16
Finish
26.22 mi14:26:013:34:408:127:55
7:46
-0:59

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

7:34 /mi

Average Pace

8:12 /mi

Slowest Pace

9:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:49:49

51% of race

Time at Steady Pace

1:08:47

32% of race

Time at Slower Pace

36:04

17% of race

Average Pace: 8:11 /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 mi11:15:1023:497:4023:49
7:40
#13678
10K
6.21 mi11:38:4247:217:3723:32
7:34
#13227
15K
9.32 mi12:02:591:11:387:4124:17
7:49
#13626
20K
12.43 mi12:27:501:36:297:4624:51
8:00
#13939
Half
13.11 mi12:33:151:41:547:465:25
7:56
#14022
25K
15.53 mi12:53:022:01:417:5019:47
8:10
#14163
30K
18.64 mi13:19:592:28:387:5826:57
8:40
#14481
20M
20.00 mi13:32:052:40:448:0212:06
8:54
#14645
21M
21.00 mi13:41:482:50:278:079:43
9:43
#14786
35K
21.75 mi13:48:072:56:468:086:19
8:27
#14767
23M
23.00 mi13:59:213:08:008:1011:14
8:58
#14831
24M
24.00 mi14:07:503:16:298:118:29
8:29
#14791
40K
24.85 mi14:15:053:23:448:127:15
8:29
#14719
25.2M
25.20 mi14:18:063:26:458:123:01
8:45
#14630
Finish
26.22 mi14:26:013:34:408:127:55
7:46
#14479
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi136783698369814528(Top 51%)4329(Top 35%)4329(Top 252%)
10K6.21 mi3.10 mi13227+4513481+2173481+21712817(Top 45%)3266(Top 27%)3266(Top 190%)
15K9.32 mi3.11 mi13626-3993757-2763757-27614528(Top 51%)4329(Top 35%)4329(Top 252%)
20K12.43 mi3.11 mi13939-3133968-2113968-21114928(Top 53%)4609(Top 38%)4609(Top 268%)
Half13.11 mi0.68 mi14022-834014-464014-4615472(Top 54%)4872(Top 40%)4872(Top 284%)
25K15.53 mi2.42 mi14163-1414136-1224136-12215053(Top 53%)4760(Top 39%)4760(Top 277%)
30K18.64 mi3.11 mi14481-3184380-2444380-24415853(Top 56%)5371(Top 44%)5371(Top 313%)
20M20.00 mi1.36 mi14645-1644498-1184498-11816261(Top 57%)5743(Top 47%)5743(Top 334%)
21M21.00 mi1.00 mi14786-1414599-1014599-10117115(Top 60%)6313(Top 52%)6313(Top 367%)
35K21.75 mi0.75 mi14767+194609-104609-1015145(Top 53%)5307(Top 43%)5307(Top 309%)
23M23.00 mi1.25 mi14831-644669-604669-6016109(Top 57%)5943(Top 49%)5943(Top 346%)
24M24.00 mi1.00 mi14791+404682-134682-1314406(Top 51%)5033(Top 41%)5033(Top 293%)
40K24.85 mi0.85 mi14719+724672+104672+1013327(Top 47%)4614(Top 38%)4614(Top 269%)
25.2M25.20 mi0.35 mi14630+894631+414631+4110418(Top 37%)3254(Top 27%)3254(Top 189%)
Finish26.22 mi1.02 mi14479+1514580+514580+5111256(Top 40%)3592(Top 29%)3592(Top 209%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21stories
+97ft-345ft

Overall

14528

Females

4329

F40-44

4329

5K→10K

3.1 - 6.2 mi

Top 45%
×5stories
+79ft-138ft

Overall

12817

Females

3266

F40-44

3266

10K→15K

6.2 - 9.3 mi

Top 51%
×3stories
+67ft-78ft

Overall

14528

Females

4329

F40-44

4329

15K→20K

9.3 - 12.4 mi

Top 53%
×5stories
+106ft-86ft

Overall

14928

Females

4609

F40-44

4609

20K→Half

12.4 - 13.1 mi

Top 54%
×2stories
+19ft-37ft

Overall

15472

Females

4872

F40-44

4872

Half→25K

13.1 - 15.5 mi

Top 53%
×4stories
+66ft-88ft

Overall

15053

Females

4760

F40-44

4760

25K→30K

15.5 - 18.6 mi

Top 56%
×9stories
+181ft-148ft

Overall

15853

Females

5371

F40-44

5371

30K→20M

18.6 - 20.0 mi

Top 57%
×5stories
+64ft-50ft

Overall

16261

Females

5743

F40-44

5743

20M→21M

20.0 - 21.0 mi

Top 60%
×8stories
+106ft-24ft

Overall

17115

Females

6313

F40-44

6313

21M→35K

21.0 - 21.8 mi

Top 53%
×7stories
+17ft-86ft

Overall

15145

Females

5307

F40-44

5307

35K→23M

21.8 - 23.0 mi

Top 57%
×5stories
+23ft-63ft

Overall

16109

Females

5943

F40-44

5943

23M→24M

23.0 - 24.0 mi

Top 51%
×6stories
+12ft-82ft

Overall

14406

Females

5033

F40-44

5033

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

13327

Females

4614

F40-44

4614

40K→25.2M

24.9 - 25.2 mi

Top 37%
×1story
+13ft-16ft

Overall

10418

Females

3254

F40-44

3254

25.2M→Finish

25.2 - 26.2 mi

Top 40%
×2stories
+22ft-21ft

Overall

11256

Females

3592

F40-44

3592

Passing Analysis

Category:
Athletes Passed
1848
Passed By
2649
Net Change
-801
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13678
5K → 10K561110+451#13678#13227
10K → 15K98497-399#13227#13626
15K → 20K119432-313#13626#13939
20K → Half1699-83#13939#14022
Half → 25K126267-141#14022#14163
25K → 30K157475-318#14163#14481
30K → 20M93257-164#14481#14645
20M → 21M60201-141#14645#14786
21M → 35K7253+19#14786#14767
35K → 23M96160-64#14767#14831
23M → 24M8949+40#14831#14791
24M → 40K10028+72#14791#14719
40K → 25.2M934+89#14719#14630
25.2M → Finish16817+151#14630#14479
TOTALS18482649-801
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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