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BOSTON MARATHON 2025

Ann Nilsen

Bib: 28706•F

OR

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0:00
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
32:52
Rank: #26916
Start → 5K
10:35/mi
32:52 split
10K· 6.21 mi
1:05:47
Rank: #26659 (+257)
5K → 10K
10:36/mi
32:55 split
15K· 9.32 mi
1:40:56
Rank: #26836 (-177)
10K → 15K
11:19/mi
35:09 split
20K· 12.43 mi
2:14:17
Rank: #26494 (+342)
15K → 20K
10:44/mi
33:21 split
Half· 13.11 mi
2:21:31
Rank: #26459 (+35)
20K → Half
10:36/mi
7:14 split
25K· 15.53 mi
2:47:45
Rank: #26190 (+269)
Half → 25K
10:49/mi
26:14 split
30K· 18.64 mi
3:23:17
Rank: #25919 (+271)
25K → 30K
11:26/mi
35:32 split
20M
3:39:02
Rank: #25817 (+102)
30K → 20M
11:35/mi
15:45 split
21M
3:50:48
Rank: #25710 (+107)
20M → 21M
11:46/mi
11:46 split
35K· 21.75 mi
3:58:31
Rank: #25617 (+93)
21M → 35K
10:19/mi
7:43 split
23M
4:11:46
Rank: #25469 (+148)
35K → 23M
10:35/mi
13:15 split
24M
4:21:39
Rank: #25328 (+141)
23M → 24M
9:53/mi
9:53 split
40K· 24.85 mi
4:30:32
Rank: #25241 (+87)
24M → 40K
10:23/mi
8:53 split
25.2M
4:34:01
Rank: #25175 (+66)
40K → 25.2M
10:06/mi
3:29 split
Finish· 26.22 mi
4:42:54
Rank: #25048 (+127)
25.2M → Finish
8:43/mi
8:53 split

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time2:21:31
Pace10:48 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time2:21:23
Pace10:47 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:53:4832:5210:3532:52
10:35
-
10K
6.21 mi12:26:431:05:4710:3532:55
10:36
+0:01
15K
9.32 mi13:01:521:40:5610:5035:09
11:19
+0:43
20K
12.43 mi13:35:132:14:1710:4833:21
10:44
-0:35
Half
13.11 mi13:42:272:21:3110:487:14
10:36
-0:08
25K
15.53 mi14:08:412:47:4510:4826:14
10:49
+0:13
30K
18.64 mi14:44:133:23:1710:5435:32
11:26
+0:37
20M
20.00 mi14:59:583:39:0210:5715:45
11:35
+0:09
21M
21.00 mi15:11:443:50:4810:5911:46
11:46
+0:11
35K
21.75 mi15:19:273:58:3110:587:43
10:19
-1:27
23M
23.00 mi15:32:424:11:4610:5713:15
10:35
+0:16
24M
24.00 mi15:42:354:21:3910:549:53
9:53
-0:42
40K
24.85 mi15:51:284:30:3210:538:53
10:23
+0:30
25.2M
25.20 mi15:54:574:34:0110:523:29
10:06
-0:17
Finish
26.22 mi16:03:504:42:5410:488:53
8:43
-1:23

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

8:43 /mi

Average Pace

10:48 /mi

Slowest Pace

11:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

22:15

8% of race

Time at Steady Pace

2:42:27

57% of race

Time at Slower Pace

1:38:12

35% of race

Average Pace: 10:47 /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 mi11:53:4832:5210:3532:52
10:35
#26916
10K
6.21 mi12:26:431:05:4710:3532:55
10:36
#26659
15K
9.32 mi13:01:521:40:5610:5035:09
11:19
#26836
20K
12.43 mi13:35:132:14:1710:4833:21
10:44
#26494
Half
13.11 mi13:42:272:21:3110:487:14
10:36
#26459
25K
15.53 mi14:08:412:47:4510:4826:14
10:49
#26190
30K
18.64 mi14:44:133:23:1710:5435:32
11:26
#25919
20M
20.00 mi14:59:583:39:0210:5715:45
11:35
#25817
21M
21.00 mi15:11:443:50:4810:5911:46
11:46
#25710
35K
21.75 mi15:19:273:58:3110:587:43
10:19
#25617
23M
23.00 mi15:32:424:11:4610:5713:15
10:35
#25469
24M
24.00 mi15:42:354:21:3910:549:53
9:53
#25328
40K
24.85 mi15:51:284:30:3210:538:53
10:23
#25241
25.2M
25.20 mi15:54:574:34:0110:523:29
10:06
#25175
Finish
26.22 mi16:03:504:42:5410:488:53
8:43
#25048
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi26916112751127527045(Top 95%)11401(Top 93%)11401(Top 208%)
10K6.21 mi3.10 mi26659+25711138+13711138+13726424(Top 93%)11024(Top 90%)11024(Top 202%)
15K9.32 mi3.11 mi26836-17711256-11811256-11827045(Top 95%)11401(Top 93%)11401(Top 208%)
20K12.43 mi3.11 mi26494+34211065+19111065+19125596(Top 90%)10586(Top 87%)10586(Top 194%)
Half13.11 mi0.68 mi26459+3511042+2311042+2325928(Top 91%)10778(Top 88%)10778(Top 197%)
25K15.53 mi2.42 mi26190+26910887+15510887+15524940(Top 88%)10255(Top 84%)10255(Top 188%)
30K18.64 mi3.11 mi25919+27110780+10710780+10724759(Top 87%)10273(Top 84%)10273(Top 188%)
20M20.00 mi1.36 mi25817+10210742+3810742+3824685(Top 87%)10311(Top 84%)10311(Top 189%)
21M21.00 mi1.00 mi25710+10710698+4410698+4423143(Top 81%)9570(Top 78%)9570(Top 175%)
35K21.75 mi0.75 mi25617+9310655+4310655+4322698(Top 80%)9397(Top 77%)9397(Top 172%)
23M23.00 mi1.25 mi25469+14810594+6110594+6122200(Top 78%)9175(Top 75%)9175(Top 168%)
24M24.00 mi1.00 mi25328+14110519+7510519+7520979(Top 74%)8597(Top 70%)8597(Top 157%)
40K24.85 mi0.85 mi25241+8710482+3710482+3721599(Top 76%)8991(Top 74%)8991(Top 164%)
25.2M25.20 mi0.35 mi25175+6610445+3710445+3717360(Top 61%)6809(Top 56%)6809(Top 125%)
Finish26.22 mi1.02 mi25048+12710385+6010385+6017529(Top 62%)6851(Top 56%)6851(Top 125%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 95%
×21stories
+97ft-345ft

Overall

27045

Females

11401

F18-39

11401

5K→10K

3.1 - 6.2 mi

Top 93%
×5stories
+79ft-138ft

Overall

26424

Females

11024

F18-39

11024

10K→15K

6.2 - 9.3 mi

Top 95%
×3stories
+67ft-78ft

Overall

27045

Females

11401

F18-39

11401

15K→20K

9.3 - 12.4 mi

Top 90%
×5stories
+106ft-86ft

Overall

25596

Females

10586

F18-39

10586

20K→Half

12.4 - 13.1 mi

Top 91%
×2stories
+19ft-37ft

Overall

25928

Females

10778

F18-39

10778

Half→25K

13.1 - 15.5 mi

Top 88%
×4stories
+66ft-88ft

Overall

24940

Females

10255

F18-39

10255

25K→30K

15.5 - 18.6 mi

Top 87%
×9stories
+181ft-148ft

Overall

24759

Females

10273

F18-39

10273

30K→20M

18.6 - 20.0 mi

Top 87%
×5stories
+64ft-50ft

Overall

24685

Females

10311

F18-39

10311

20M→21M

20.0 - 21.0 mi

Top 81%
×8stories
+106ft-24ft

Overall

23143

Females

9570

F18-39

9570

21M→35K

21.0 - 21.8 mi

Top 80%
×7stories
+17ft-86ft

Overall

22698

Females

9397

F18-39

9397

35K→23M

21.8 - 23.0 mi

Top 78%
×5stories
+23ft-63ft

Overall

22200

Females

9175

F18-39

9175

23M→24M

23.0 - 24.0 mi

Top 74%
×6stories
+12ft-82ft

Overall

20979

Females

8597

F18-39

8597

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

21599

Females

8991

F18-39

8991

40K→25.2M

24.9 - 25.2 mi

Top 61%
×1story
+13ft-16ft

Overall

17360

Females

6809

F18-39

6809

25.2M→Finish

25.2 - 26.2 mi

Top 62%
×2stories
+22ft-21ft

Overall

17529

Females

6851

F18-39

6851

Passing Analysis

Category:
Athletes Passed
2244
Passed By
376
Net Change
+1868
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26916
5K → 10K32265+257#26916#26659
10K → 15K73250-177#26659#26836
15K → 20K3486+342#26836#26494
20K → Half394+35#26494#26459
Half → 25K2756+269#26459#26190
25K → 30K28312+271#26190#25919
30K → 20M11412+102#25919#25817
20M → 21M1136+107#25817#25710
21M → 35K963+93#25710#25617
35K → 23M1557+148#25617#25469
23M → 24M1432+141#25469#25328
24M → 40K903+87#25328#25241
40K → 25.2M660+66#25241#25175
25.2M → Finish1270+127#25175#25048
TOTALS2244376+1868
📊

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