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BOSTON MARATHON 2025

Nicole Nielsen

Bib: 25985•F

MA

0:00
0:00
/ mi
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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
32:12
Rank: #26440
Start → 5K
32:12 | 10:22/mi
10K· 6.21 mi
1:04:30
Rank: #26248 (+192)
5K → 10K
32:18 | 10:24/mi
15K· 9.32 mi
1:36:53
Rank: #26072 (+176)
10K → 15K
32:23 | 10:25/mi
20K· 12.43 mi
2:12:33
Rank: #26272 (-200)
15K → 20K
35:40 | 11:29/mi
Half· 13.11 mi
2:19:56
Rank: #26276 (-4)
20K → Half
7:23 | 10:49/mi
25K· 15.53 mi
2:49:10
Rank: #26336 (-60)
Half → 25K
29:14 | 12:03/mi
30K· 18.64 mi
3:30:56
Rank: #26561 (-225)
25K → 30K
41:46 | 13:27/mi
20M
3:48:59
Rank: #26575 (-14)
30K → 20M
18:03 | 13:17/mi
21M
4:03:02
Rank: #26572 (+3)
20M → 21M
14:03 | 14:03/mi
35K· 21.75 mi
4:12:03
Rank: #26563 (+9)
21M → 35K
9:01 | 12:03/mi
23M
4:28:23
Rank: #26561 (+2)
35K → 23M
16:20 | 13:03/mi
24M
4:40:52
Rank: #26570 (-9)
23M → 24M
12:29 | 12:29/mi
40K· 24.85 mi
4:51:43
Rank: #26569 (+1)
24M → 40K
10:51 | 12:41/mi
25.2M
4:56:21
Rank: #26566 (+3)
40K → 25.2M
4:38 | 13:26/mi
Finish· 26.22 mi
5:08:08
Rank: #26554 (+12)
25.2M → Finish
11:47 | 11:34/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:19:56
Pace10:40 /mi
2nd Half
Distance13.11 mi
Time2:48:12
Pace12:50 /mi
📊Positive Split: 20.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:3232:1210:2232:12
10:22
-
10K
6.21 mi12:24:501:04:3010:2332:18
10:24
+0:02
15K
9.32 mi12:57:131:36:5310:2432:23
10:25
+0:01
20K
12.43 mi13:32:532:12:3310:4035:40
11:29
+1:04
Half
13.11 mi13:40:162:19:5610:407:23
10:49
-0:40
25K
15.53 mi14:09:302:49:1010:5329:14
12:03
+1:14
30K
18.64 mi14:51:163:30:5611:1941:46
13:27
+1:24
20M
20.00 mi15:09:193:48:5911:2718:03
13:17
-0:10
21M
21.00 mi15:23:224:03:0211:3414:03
14:03
+0:46
35K
21.75 mi15:32:234:12:0311:359:01
12:03
-2:00
23M
23.00 mi15:48:434:28:2311:4016:20
13:03
+1:00
24M
24.00 mi16:01:124:40:5211:4212:29
12:29
-0:34
40K
24.85 mi16:12:034:51:4311:4410:51
12:41
+0:12
25.2M
25.20 mi16:16:414:56:2111:464:38
13:26
+0:45
Finish
26.22 mi16:28:285:08:0811:4611:47
11:34
-1:52

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

10:22 /mi

Average Pace

11:46 /mi

Slowest Pace

14:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:44:16

34% of race

Time at Steady Pace

1:38:11

32% of race

Time at Slower Pace

1:45:41

34% of race

Average Pace: 11:45 /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 mi11:52:3232:1210:2232:12
10:22
#26440
10K
6.21 mi12:24:501:04:3010:2332:18
10:24
#26248
15K
9.32 mi12:57:131:36:5310:2432:23
10:25
#26072
20K
12.43 mi13:32:532:12:3310:4035:40
11:29
#26272
Half
13.11 mi13:40:162:19:5610:407:23
10:49
#26276
25K
15.53 mi14:09:302:49:1010:5329:14
12:03
#26336
30K
18.64 mi14:51:163:30:5611:1941:46
13:27
#26561
20M
20.00 mi15:09:193:48:5911:2718:03
13:17
#26575
21M
21.00 mi15:23:224:03:0211:3414:03
14:03
#26572
35K
21.75 mi15:32:234:12:0311:359:01
12:03
#26563
23M
23.00 mi15:48:434:28:2311:4016:20
13:03
#26561
24M
24.00 mi16:01:124:40:5211:4212:29
12:29
#26570
40K
24.85 mi16:12:034:51:4311:4410:51
12:41
#26569
25.2M
25.20 mi16:16:414:56:2111:464:38
13:26
#26566
Finish
26.22 mi16:28:285:08:0811:4611:47
11:34
#26554
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi26440109971099725796(Top 91%)10675(Top 87%)10675(Top 195%)
10K6.21 mi3.10 mi26248+19210909+8810909+8826089(Top 92%)10840(Top 89%)10840(Top 198%)
15K9.32 mi3.11 mi26072+17610820+8910820+8925796(Top 91%)10675(Top 87%)10675(Top 195%)
20K12.43 mi3.11 mi26272-20010932-11210932-11226606(Top 94%)11163(Top 91%)11163(Top 204%)
Half13.11 mi0.68 mi26276-4109321093226282(Top 93%)10988(Top 90%)10988(Top 201%)
25K15.53 mi2.42 mi26336-6010973-4110973-4126488(Top 93%)11132(Top 91%)11132(Top 204%)
30K18.64 mi3.11 mi26561-22511140-16711140-16727100(Top 95%)11551(Top 94%)11551(Top 211%)
20M20.00 mi1.36 mi26575-1411158-1811158-1826700(Top 94%)11402(Top 93%)11402(Top 208%)
21M21.00 mi1.00 mi26572+311167-911167-926276(Top 93%)11194(Top 92%)11194(Top 205%)
35K21.75 mi0.75 mi26563+911171-411171-425928(Top 91%)11068(Top 91%)11068(Top 202%)
23M23.00 mi1.25 mi26561+211189-1811189-1826418(Top 93%)11307(Top 92%)11307(Top 207%)
24M24.00 mi1.00 mi26570-911198-911198-926287(Top 93%)11262(Top 92%)11262(Top 206%)
40K24.85 mi0.85 mi26569+111200-211200-225907(Top 91%)11103(Top 91%)11103(Top 203%)
25.2M25.20 mi0.35 mi26566+3112001120025571(Top 90%)10989(Top 90%)10989(Top 201%)
Finish26.22 mi1.02 mi26554+1211196+411196+426221(Top 92%)11260(Top 92%)11260(Top 206%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 91%
×21stories
+97ft-345ft

Overall

25796

Females

10675

F18-39

10675

5K→10K

3.1 - 6.2 mi

Top 92%
×5stories
+79ft-138ft

Overall

26089

Females

10840

F18-39

10840

10K→15K

6.2 - 9.3 mi

Top 91%
×3stories
+67ft-78ft

Overall

25796

Females

10675

F18-39

10675

15K→20K

9.3 - 12.4 mi

Top 94%
×5stories
+106ft-86ft

Overall

26606

Females

11163

F18-39

11163

20K→Half

12.4 - 13.1 mi

Top 93%
×2stories
+19ft-37ft

Overall

26282

Females

10988

F18-39

10988

Half→25K

13.1 - 15.5 mi

Top 93%
×4stories
+66ft-88ft

Overall

26488

Females

11132

F18-39

11132

25K→30K

15.5 - 18.6 mi

Top 95%
×9stories
+181ft-148ft

Overall

27100

Females

11551

F18-39

11551

30K→20M

18.6 - 20.0 mi

Top 94%
×5stories
+64ft-50ft

Overall

26700

Females

11402

F18-39

11402

20M→21M

20.0 - 21.0 mi

Top 93%
×8stories
+106ft-24ft

Overall

26276

Females

11194

F18-39

11194

21M→35K

21.0 - 21.8 mi

Top 91%
×7stories
+17ft-86ft

Overall

25928

Females

11068

F18-39

11068

35K→23M

21.8 - 23.0 mi

Top 93%
×5stories
+23ft-63ft

Overall

26418

Females

11307

F18-39

11307

23M→24M

23.0 - 24.0 mi

Top 93%
×6stories
+12ft-82ft

Overall

26287

Females

11262

F18-39

11262

24M→40K

24.0 - 24.9 mi

Top 91%
×1story
+6ft-20ft

Overall

25907

Females

11103

F18-39

11103

40K→25.2M

24.9 - 25.2 mi

Top 90%
×1story
+13ft-16ft

Overall

25571

Females

10989

F18-39

10989

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2stories
+22ft-21ft

Overall

26221

Females

11260

F18-39

11260

Passing Analysis

Category:
Athletes Passed
916
Passed By
1030
Net Change
-114
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26440
5K → 10K27179+192#26440#26248
10K → 15K22044+176#26248#26072
15K → 20K63263-200#26072#26272
20K → Half1317-4#26272#26276
Half → 25K69129-60#26276#26336
25K → 30K36261-225#26336#26561
30K → 20M3751-14#26561#26575
20M → 21M3936+3#26575#26572
21M → 35K3021+9#26572#26563
35K → 23M5149+2#26563#26561
23M → 24M2332-9#26561#26570
24M → 40K2423+1#26570#26569
40K → 25.2M1310+3#26569#26566
25.2M → Finish2715+12#26566#26554
TOTALS9161030-114
📊

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