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BOSTON MARATHON 2025

Janice Ng

VA

Bib: 17212 F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 38%
Masters (Masters Women)
#0 / 6759
Top 23%
Division (F40-44)
#0 / 1718
Top 46%
Race Day Weather
50°/40°F
broken clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
7:33/mi
23:28
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:31/mi
46:49
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:38/mi
1:10:31
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:43/mi
1:34:31
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:37/mi
1:39:43
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:48/mi
1:58:38
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:30/mi
2:25:01
↑ 181↓ 1480.2%
138 ft elev
20M
8:48/mi
2:36:59
↑ 64↓ 500.2%
148 ft elev
21M
9:21/mi
2:46:20
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
9:01/mi
2:53:05
↑ 17↓ 861.7%
156 ft elev
23M
9:18/mi
3:04:44
↑ 23↓ 630.6%
116 ft elev
24M
9:19/mi
3:14:03
↓ 821.3%
34 ft elev
40K· 24.85 mi
9:27/mi
3:22:08
↓ 200.3%
20 ft elev
25.2M
10:18/mi
3:25:41
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
9:10/mi
3:35:01
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:39:437:36 /mi⚡ faster
2nd Half
1:55:188:48 /mi+15.6%
Positive split — 15.6% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
23:287:333.11 mi23:28
7:33
-
10K
46:497:323.10 mi23:21
7:31
-0:02
15K
1:10:317:343.11 mi23:42
7:38
+0:07
20K
1:34:317:363.11 mi24:00
7:43
+0:05
Half(13.11 mi)
1:39:437:360.68 mi5:12
7:37
-0:06
25K
1:58:387:382.42 mi18:55
7:48
+0:11
30K
2:25:017:473.11 mi26:23
8:30
+0:42
20M
2:36:597:511.36 mi11:58
8:48
+0:18
21M
2:46:207:551.00 mi9:21
9:21
+0:33
35K
2:53:057:580.75 mi6:45
9:01
-0:20
23M
3:04:448:021.25 mi11:39
9:18
+0:17
24M
3:14:038:051.00 mi9:19
9:19
+0:01
40K
3:22:088:080.85 mi8:05
9:27
+0:08
25.2M
3:25:418:100.35 mi3:33
10:18
+0:51
Finish(26.22 mi)
3:35:018:121.02 mi9:20
9:10
-1:08
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

7:31 /mi

Average Pace

8:12 /mi

Slowest Pace

10:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

1:58:38

55% of race

Time at Steady Pace

54:26

25% of race

Time at Slower Pace

41:57

20% of race

Average Pace: 8:12 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi12703316831681288833853385
10K3.10 mi12450+2533040+1283040+1281227129682968
15K3.11 mi12566-1163140-1003140-1001288833853385
20K3.11 mi12537+293167-273167-271264233533353
Half(13.11 mi)0.68 mi12557-203184-173184-171286634453445
25K2.42 mi12504+533195-113195-111240633463346
30K3.11 mi12897-3933486-2913486-2911470147404740
20M1.36 mi13122-2253646-1603646-1601570154145414
21M1.00 mi13252-1303749-1033749-1031541353965396
35K0.75 mi13466-2143901-1523901-1521834570887088
23M1.25 mi13776-3104104-2034104-2031779368816881
24M1.00 mi14096-3204312-2084312-2081888874887488
40K0.85 mi14279-1834430-1184430-1181853273887388
25.2M0.35 mi14342-634475-454475-451828372717271
Finish(26.22 mi)1.02 mi14573-2314639-1644639-1641978280218021

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 45%
×21story building
+97ft-345ft

Overall

12888

Females

3385

F40-44

3385

5K→10K

3.1 - 6.2 mi

Top 43%
×5story building
+79ft-138ft

Overall

12271

Females

2968

F40-44

2968

10K→15K

6.2 - 9.3 mi

Top 45%
×3story building
+67ft-78ft

Overall

12888

Females

3385

F40-44

3385

15K→20K

9.3 - 12.4 mi

Top 45%
×5story building
+106ft-86ft

Overall

12642

Females

3353

F40-44

3353

20K→Half

12.4 - 13.1 mi

Top 45%
×2story building
+19ft-37ft

Overall

12866

Females

3445

F40-44

3445

Half→25K

13.1 - 15.5 mi

Top 44%
×4story building
+66ft-88ft

Overall

12406

Females

3346

F40-44

3346

25K→30K

15.5 - 18.6 mi

Top 52%
×9story building
+181ft-148ft

Overall

14701

Females

4740

F40-44

4740

30K→20M

18.6 - 20.0 mi

Top 55%
×5story building
+64ft-50ft

Overall

15701

Females

5414

F40-44

5414

20M→21M

20.0 - 21.0 mi

Top 54%
×8story building
+106ft-24ft

Overall

15413

Females

5396

F40-44

5396

21M→35K

21.0 - 21.8 mi

Top 65%
×7story building
+17ft-86ft

Overall

18345

Females

7088

F40-44

7088

35K→23M

21.8 - 23.0 mi

Top 63%
×5story building
+23ft-63ft

Overall

17793

Females

6881

F40-44

6881

23M→24M

23.0 - 24.0 mi

Top 66%
×6story building
+12ft-82ft

Overall

18888

Females

7488

F40-44

7488

24M→40K

24.0 - 24.9 mi

Top 65%
×1story
+6ft-20ft

Overall

18532

Females

7388

F40-44

7388

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1story
+13ft-16ft

Overall

18283

Females

7271

F40-44

7271

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2story building
+22ft-21ft

Overall

19782

Females

8021

F40-44

8021

Passing Analysis

Category:
Passed
1402
Passed By
3272
Net Change
-1870
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12703
5K → 10K426173+253#12703#12450
10K → 15K145261-116#12450#12566
15K → 20K200171+29#12566#12537
20K → Half2444-20#12537#12557
Half → 25K177124+53#12557#12504
25K → 30K127520-393#12504#12897
30K → 20M70295-225#12897#13122
20M → 21M63193-130#13122#13252
21M → 35K23237-214#13252#13466
35K → 23M47357-310#13466#13776
23M → 24M24344-320#13776#14096
24M → 40K35218-183#14096#14279
40K → 25.2M1780-63#14279#14342
25.2M → Finish24255-231#14342#14573
TOTALS14023272-1870

Passing Charts

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