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BOSTON MARATHON 2025

Natalie Smith

Bib: 17645•F

NC

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
25:36
Rank: #18371
Start → 5K
25:36 | 8:14/mi
10K· 6.21 mi
51:03
Rank: #18090 (+281)
5K → 10K
25:27 | 8:11/mi
15K· 9.32 mi
1:16:26
Rank: #17764 (+326)
10K → 15K
25:23 | 8:10/mi
20K· 12.43 mi
1:42:19
Rank: #17576 (+188)
15K → 20K
25:53 | 8:20/mi
Half· 13.11 mi
1:48:00
Rank: #17606 (-30)
20K → Half
5:41 | 8:20/mi
25K· 15.53 mi
2:09:29
Rank: #17820 (-214)
Half → 25K
21:29 | 8:52/mi
30K· 18.64 mi
2:39:55
Rank: #18631 (-811)
25K → 30K
30:26 | 9:48/mi
20M
2:53:25
Rank: #18852 (-221)
30K → 20M
13:30 | 9:56/mi
21M
3:04:24
Rank: #19080 (-228)
20M → 21M
10:59 | 10:59/mi
35K· 21.75 mi
3:12:23
Rank: #19347 (-267)
21M → 35K
7:59 | 10:40/mi
23M
3:28:02
Rank: #20125 (-778)
35K → 23M
15:39 | 12:30/mi
24M
3:37:34
Rank: #20123 (+2)
23M → 24M
9:32 | 9:32/mi
40K· 24.85 mi
3:45:47
Rank: #20092 (+31)
24M → 40K
8:13 | 9:37/mi
25.2M
3:49:26
Rank: #20091 (+1)
40K → 25.2M
3:39 | 10:35/mi
Finish· 26.22 mi
3:58:36
Rank: #20079 (+12)
25.2M → Finish
9:10 | 9:00/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:00
Pace8:14 /mi
2nd Half
Distance13.11 mi
Time2:10:36
Pace9:58 /mi
📊Positive Split: 20.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:1025:368:1425:36
8:14
-
10K
6.21 mi11:41:3751:038:1325:27
8:11
-0:03
15K
9.32 mi12:07:001:16:268:1225:23
8:10
-0:01
20K
12.43 mi12:32:531:42:198:1425:53
8:20
+0:10
Half
13.11 mi12:38:341:48:008:145:41
8:20
0:00
25K
15.53 mi13:00:032:09:298:2021:29
8:52
+0:32
30K
18.64 mi13:30:292:39:558:3530:26
9:48
+0:56
20M
20.00 mi13:43:592:53:258:4013:30
9:56
+0:08
21M
21.00 mi13:54:583:04:248:4710:59
10:59
+1:03
35K
21.75 mi14:02:573:12:238:517:59
10:40
-0:19
23M
23.00 mi14:18:363:28:029:0315:39
12:30
+1:50
24M
24.00 mi14:28:083:37:349:049:32
9:32
-2:58
40K
24.85 mi14:36:213:45:479:058:13
9:37
+0:05
25.2M
25.20 mi14:40:003:49:269:063:39
10:35
+0:58
Finish
26.22 mi14:49:103:58:369:069:10
9:00
-1:35

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

8:10 /mi

Average Pace

9:06 /mi

Slowest Pace

12:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:09:29

54% of race

Time at Steady Pace

1:10:51

30% of race

Time at Slower Pace

38:16

16% of race

Average Pace: 9:06 /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 mi11:16:1025:368:1425:36
8:14
#18371
10K
6.21 mi11:41:3751:038:1325:27
8:11
#18090
15K
9.32 mi12:07:001:16:268:1225:23
8:10
#17764
20K
12.43 mi12:32:531:42:198:1425:53
8:20
#17576
Half
13.11 mi12:38:341:48:008:145:41
8:20
#17606
25K
15.53 mi13:00:032:09:298:2021:29
8:52
#17820
30K
18.64 mi13:30:292:39:558:3530:26
9:48
#18631
20M
20.00 mi13:43:592:53:258:4013:30
9:56
#18852
21M
21.00 mi13:54:583:04:248:4710:59
10:59
#19080
35K
21.75 mi14:02:573:12:238:517:59
10:40
#19347
23M
23.00 mi14:18:363:28:029:0315:39
12:30
#20125
24M
24.00 mi14:28:083:37:349:049:32
9:32
#20123
40K
24.85 mi14:36:213:45:479:058:13
9:37
#20092
25.2M
25.20 mi14:40:003:49:269:063:39
10:35
#20091
Finish
26.22 mi14:49:103:58:369:069:10
9:00
#20079
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi183716568656817219(Top 61%)5863(Top 48%)5863(Top 107%)
10K6.21 mi3.10 mi18090+2816385+1836385+18317844(Top 63%)6211(Top 51%)6211(Top 114%)
15K9.32 mi3.11 mi17764+3266188+1976188+19717219(Top 61%)5863(Top 48%)5863(Top 107%)
20K12.43 mi3.11 mi17576+1886086+1026086+10217123(Top 60%)5842(Top 48%)5842(Top 107%)
Half13.11 mi0.68 mi17606-306102-166102-1618214(Top 64%)6464(Top 53%)6464(Top 118%)
25K15.53 mi2.42 mi17820-2146253-1516253-15119256(Top 68%)7122(Top 58%)7122(Top 130%)
30K18.64 mi3.11 mi18631-8116736-4836736-48320983(Top 74%)8218(Top 67%)8218(Top 150%)
20M20.00 mi1.36 mi18852-2216886-1506886-15020725(Top 73%)8206(Top 67%)8206(Top 150%)
21M21.00 mi1.00 mi19080-2287048-1627048-16221355(Top 75%)8621(Top 71%)8621(Top 158%)
35K21.75 mi0.75 mi19347-2677216-1687216-16823531(Top 83%)9813(Top 80%)9813(Top 179%)
23M23.00 mi1.25 mi20125-7787691-4757691-47525812(Top 91%)11004(Top 90%)11004(Top 201%)
24M24.00 mi1.00 mi20123+27706-157706-1519751(Top 70%)7958(Top 65%)7958(Top 146%)
40K24.85 mi0.85 mi20092+317710-47710-419143(Top 67%)7705(Top 63%)7705(Top 141%)
25.2M25.20 mi0.35 mi20091+17717-77717-719341(Top 68%)7829(Top 64%)7829(Top 143%)
Finish26.22 mi1.02 mi20079+127721-47721-419057(Top 67%)7636(Top 62%)7636(Top 140%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21stories
+97ft-345ft

Overall

17219

Females

5863

F18-39

5863

5K→10K

3.1 - 6.2 mi

Top 63%
×5stories
+79ft-138ft

Overall

17844

Females

6211

F18-39

6211

10K→15K

6.2 - 9.3 mi

Top 61%
×3stories
+67ft-78ft

Overall

17219

Females

5863

F18-39

5863

15K→20K

9.3 - 12.4 mi

Top 60%
×5stories
+106ft-86ft

Overall

17123

Females

5842

F18-39

5842

20K→Half

12.4 - 13.1 mi

Top 64%
×2stories
+19ft-37ft

Overall

18214

Females

6464

F18-39

6464

Half→25K

13.1 - 15.5 mi

Top 68%
×4stories
+66ft-88ft

Overall

19256

Females

7122

F18-39

7122

25K→30K

15.5 - 18.6 mi

Top 74%
×9stories
+181ft-148ft

Overall

20983

Females

8218

F18-39

8218

30K→20M

18.6 - 20.0 mi

Top 73%
×5stories
+64ft-50ft

Overall

20725

Females

8206

F18-39

8206

20M→21M

20.0 - 21.0 mi

Top 75%
×8stories
+106ft-24ft

Overall

21355

Females

8621

F18-39

8621

21M→35K

21.0 - 21.8 mi

Top 83%
×7stories
+17ft-86ft

Overall

23531

Females

9813

F18-39

9813

35K→23M

21.8 - 23.0 mi

Top 91%
×5stories
+23ft-63ft

Overall

25812

Females

11004

F18-39

11004

23M→24M

23.0 - 24.0 mi

Top 70%
×6stories
+12ft-82ft

Overall

19751

Females

7958

F18-39

7958

24M→40K

24.0 - 24.9 mi

Top 67%
×1story
+6ft-20ft

Overall

19143

Females

7705

F18-39

7705

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

19341

Females

7829

F18-39

7829

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2stories
+22ft-21ft

Overall

19057

Females

7636

F18-39

7636

Passing Analysis

Category:
Athletes Passed
1652
Passed By
3360
Net Change
-1708
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18371
5K → 10K429148+281#18371#18090
10K → 15K38963+326#18090#17764
15K → 20K28193+188#17764#17576
20K → Half2858-30#17576#17606
Half → 25K105319-214#17606#17820
25K → 30K69880-811#17820#18631
30K → 20M53274-221#18631#18852
20M → 21M41269-228#18852#19080
21M → 35K13280-267#19080#19347
35K → 23M9787-778#19347#20125
23M → 24M6361+2#20125#20123
24M → 40K6938+31#20123#20092
40K → 25.2M3231+1#20092#20091
25.2M → Finish7159+12#20091#20079
TOTALS16523360-1708
📊

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