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BOSTON MARATHON 2025

Crystal Lainchbury

Bib: 14949•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 46%
Gender (Female)
#0 / 12228
Top 31%
Division (F18-39)
#0 / 5469
Top 49%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:50
Rank: #13721
Start → 5K
23:50 | 7:40/mi
10K· 6.21 mi
47:52
Rank: #13937 (-216)
5K → 10K
24:02 | 7:44/mi
15K· 9.32 mi
1:11:59
Rank: #13962 (-25)
10K → 15K
24:07 | 7:46/mi
20K· 12.43 mi
1:36:20
Rank: #13822 (+140)
15K → 20K
24:21 | 7:50/mi
Half· 13.11 mi
1:41:36
Rank: #13793 (+29)
20K → Half
5:16 | 7:43/mi
25K· 15.53 mi
2:00:48
Rank: #13681 (+112)
Half → 25K
19:12 | 7:55/mi
30K· 18.64 mi
2:26:34
Rank: #13585 (+96)
25K → 30K
25:46 | 8:18/mi
20M
2:38:10
Rank: #13597 (-12)
30K → 20M
11:36 | 8:32/mi
21M
2:47:00
Rank: #13502 (+95)
20M → 21M
8:50 | 8:50/mi
35K· 21.75 mi
2:52:55
Rank: #13418 (+84)
21M → 35K
5:55 | 7:55/mi
23M
3:03:25
Rank: #13327 (+91)
35K → 23M
10:30 | 8:23/mi
24M
3:11:28
Rank: #13228 (+99)
23M → 24M
8:03 | 8:03/mi
40K· 24.85 mi
3:18:27
Rank: #13151 (+77)
24M → 40K
6:59 | 8:10/mi
25.2M
3:21:30
Rank: #13112 (+39)
40K → 25.2M
3:03 | 8:51/mi
Finish· 26.22 mi
3:29:25
Rank: #13055 (+57)
25.2M → Finish
7:55 | 7:46/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:36
Pace7:45 /mi
2nd Half
Distance13.11 mi
Time1:47:49
Pace8:13 /mi
📊Positive Split: 6.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:4823:507:4023:50
7:40
-
10K
6.21 mi11:18:5047:527:4224:02
7:44
+0:04
15K
9.32 mi11:42:571:11:597:4324:07
7:46
+0:02
20K
12.43 mi12:07:181:36:207:4524:21
7:50
+0:04
Half
13.11 mi12:12:341:41:367:455:16
7:43
-0:07
25K
15.53 mi12:31:462:00:487:4719:12
7:55
+0:12
30K
18.64 mi12:57:322:26:347:5225:46
8:18
+0:23
20M
20.00 mi13:09:082:38:107:5411:36
8:32
+0:14
21M
21.00 mi13:17:582:47:007:578:50
8:50
+0:18
35K
21.75 mi13:23:532:52:557:575:55
7:55
-0:55
23M
23.00 mi13:34:233:03:257:5810:30
8:23
+0:28
24M
24.00 mi13:42:263:11:287:598:03
8:03
-0:20
40K
24.85 mi13:49:253:18:277:596:59
8:10
+0:07
25.2M
25.20 mi13:52:283:21:308:003:03
8:51
+0:41
Finish
26.22 mi14:00:233:29:258:007:55
7:46
-1:05

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

7:40 /mi

Average Pace

8:00 /mi

Slowest Pace

8:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:05:56

89% of race

Time at Steady Pace

23:29

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:59 /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 mi10:54:4823:507:4023:50
7:40
#13721
10K
6.21 mi11:18:5047:527:4224:02
7:44
#13937
15K
9.32 mi11:42:571:11:597:4324:07
7:46
#13962
20K
12.43 mi12:07:181:36:207:4524:21
7:50
#13822
Half
13.11 mi12:12:341:41:367:455:16
7:43
#13793
25K
15.53 mi12:31:462:00:487:4719:12
7:55
#13681
30K
18.64 mi12:57:322:26:347:5225:46
8:18
#13585
20M
20.00 mi13:09:082:38:107:5411:36
8:32
#13597
21M
21.00 mi13:17:582:47:007:578:50
8:50
#13502
35K
21.75 mi13:23:532:52:557:575:55
7:55
#13418
23M
23.00 mi13:34:233:03:257:5810:30
8:23
#13327
24M
24.00 mi13:42:263:11:287:598:03
8:03
#13228
40K
24.85 mi13:49:253:18:277:596:59
8:10
#13151
25.2M
25.20 mi13:52:283:21:308:003:03
8:51
#13112
Finish
26.22 mi14:00:233:29:258:007:55
7:46
#13055
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi137213721372114053(Top 49%)4045(Top 33%)4045(Top 74%)
10K6.21 mi3.10 mi13937-2163900-1793900-17914215(Top 50%)4086(Top 33%)4086(Top 75%)
15K9.32 mi3.11 mi13962-253945-453945-4514053(Top 49%)4045(Top 33%)4045(Top 74%)
20K12.43 mi3.11 mi13822+1403912+333912+3313580(Top 48%)3862(Top 32%)3862(Top 71%)
Half13.11 mi0.68 mi13793+293901+113901+1113622(Top 48%)3844(Top 31%)3844(Top 70%)
25K15.53 mi2.42 mi13681+1123863+383863+3813260(Top 47%)3803(Top 31%)3803(Top 70%)
30K18.64 mi3.11 mi13585+963869-63869-613463(Top 47%)4088(Top 33%)4088(Top 75%)
20M20.00 mi1.36 mi13597-123906-373906-3714013(Top 49%)4516(Top 37%)4516(Top 83%)
21M21.00 mi1.00 mi13502+953890+163890+1612537(Top 44%)3884(Top 32%)3884(Top 71%)
35K21.75 mi0.75 mi13418+843870+203870+2011683(Top 41%)3485(Top 29%)3485(Top 64%)
23M23.00 mi1.25 mi13327+913855+153855+1512602(Top 44%)4051(Top 33%)4051(Top 74%)
24M24.00 mi1.00 mi13228+993827+283827+2811619(Top 41%)3634(Top 30%)3634(Top 66%)
40K24.85 mi0.85 mi13151+773811+163811+1611397(Top 40%)3606(Top 29%)3606(Top 66%)
25.2M25.20 mi0.35 mi13112+393803+83803+811003(Top 39%)3497(Top 29%)3497(Top 64%)
Finish26.22 mi1.02 mi13055+573789+143789+1411246(Top 40%)3582(Top 29%)3582(Top 65%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×21stories
+97ft-345ft

Overall

14053

Females

4045

F18-39

4045

5K→10K

3.1 - 6.2 mi

Top 50%
×5stories
+79ft-138ft

Overall

14215

Females

4086

F18-39

4086

10K→15K

6.2 - 9.3 mi

Top 49%
×3stories
+67ft-78ft

Overall

14053

Females

4045

F18-39

4045

15K→20K

9.3 - 12.4 mi

Top 48%
×5stories
+106ft-86ft

Overall

13580

Females

3862

F18-39

3862

20K→Half

12.4 - 13.1 mi

Top 48%
×2stories
+19ft-37ft

Overall

13622

Females

3844

F18-39

3844

Half→25K

13.1 - 15.5 mi

Top 47%
×4stories
+66ft-88ft

Overall

13260

Females

3803

F18-39

3803

25K→30K

15.5 - 18.6 mi

Top 47%
×9stories
+181ft-148ft

Overall

13463

Females

4088

F18-39

4088

30K→20M

18.6 - 20.0 mi

Top 49%
×5stories
+64ft-50ft

Overall

14013

Females

4516

F18-39

4516

20M→21M

20.0 - 21.0 mi

Top 44%
×8stories
+106ft-24ft

Overall

12537

Females

3884

F18-39

3884

21M→35K

21.0 - 21.8 mi

Top 41%
×7stories
+17ft-86ft

Overall

11683

Females

3485

F18-39

3485

35K→23M

21.8 - 23.0 mi

Top 44%
×5stories
+23ft-63ft

Overall

12602

Females

4051

F18-39

4051

23M→24M

23.0 - 24.0 mi

Top 41%
×6stories
+12ft-82ft

Overall

11619

Females

3634

F18-39

3634

24M→40K

24.0 - 24.9 mi

Top 40%
×1story
+6ft-20ft

Overall

11397

Females

3606

F18-39

3606

40K→25.2M

24.9 - 25.2 mi

Top 39%
×1story
+13ft-16ft

Overall

11003

Females

3497

F18-39

3497

25.2M→Finish

25.2 - 26.2 mi

Top 40%
×2stories
+22ft-21ft

Overall

11246

Females

3582

F18-39

3582

Passing Analysis

Category:
Athletes Passed
2118
Passed By
1452
Net Change
+666
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13721
5K → 10K201417-216#13721#13937
10K → 15K181206-25#13937#13962
15K → 20K284144+140#13962#13822
20K → Half4920+29#13822#13793
Half → 25K231119+112#13793#13681
25K → 30K277181+96#13681#13585
30K → 20M122134-12#13585#13597
20M → 21M15257+95#13597#13502
21M → 35K10218+84#13502#13418
35K → 23M14655+91#13418#13327
23M → 24M12627+99#13327#13228
24M → 40K10629+77#13228#13151
40K → 25.2M5314+39#13151#13112
25.2M → Finish8831+57#13112#13055
TOTALS21181452+666
📊

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