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BOSTON MARATHON 2025

Katherine Cartwright

Bib: 18069•F

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

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:43/mi
24:00
↑ 97↓ 3451.5%
10K· 6.21 mi
7:57/mi
48:42
↑ 79↓ 1380.4%
15K· 9.32 mi
8:07/mi
1:13:56
↑ 67↓ 78
20K· 12.43 mi
8:18/mi
1:39:44
↑ 106↓ 860.1%
Half· 13.11 mi
8:07/mi
1:45:16
↑ 19↓ 370.5%
25K· 15.53 mi
8:27/mi
2:05:46
↑ 66↓ 880.2%
30K· 18.64 mi
8:55/mi
2:33:27
↑ 181↓ 1480.2%
20M
9:28/mi
2:46:19
↑ 64↓ 500.2%
21M
12:02/mi
2:58:21
↑ 106↓ 241.6%
35K· 21.75 mi
8:57/mi
3:05:03
↑ 17↓ 861.7%
23M
9:21/mi
3:16:45
↑ 23↓ 630.6%
24M
9:08/mi
3:25:53
↓ 821.3%
40K· 24.85 mi
9:02/mi
3:33:36
↓ 200.3%
25.2M
9:49/mi
3:36:59
↑ 13↓ 160.2%
Finish· 26.22 mi
8:25/mi
3:45:34
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:16
Pace8:02 /mi
2nd Half
Distance13.11 mi
Time2:00:18
Pace9:11 /mi
📊Positive Split: 14.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:0524:007:4324:00
7:43
-
10K
6.21 mi11:38:4748:427:5024:42
7:57
+0:14
15K
9.32 mi12:04:011:13:567:5625:14
8:07
+0:10
20K
12.43 mi12:29:491:39:448:0225:48
8:18
+0:11
Half
13.11 mi12:35:211:45:168:025:32
8:07
-0:11
25K
15.53 mi12:55:512:05:468:0620:30
8:27
+0:20
30K
18.64 mi13:23:322:33:278:1427:41
8:55
+0:28
20M
20.00 mi13:36:242:46:198:1912:52
9:28
+0:33
21M
21.00 mi13:48:262:58:218:3012:02
12:02
+2:34
35K
21.75 mi13:55:083:05:038:316:42
8:57
-3:05
23M
23.00 mi14:06:503:16:458:3311:42
9:21
+0:24
24M
24.00 mi14:15:583:25:538:359:08
9:08
-0:13
40K
24.85 mi14:23:413:33:368:367:43
9:02
-0:06
25.2M
25.20 mi14:27:043:36:598:373:23
9:49
+0:47
Finish
26.22 mi14:35:393:45:348:378:35
8:25
-1:24

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

7:43 /mi

Average Pace

8:37 /mi

Slowest Pace

12:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:45:16

47% of race

Time at Steady Pace

1:32:01

41% of race

Time at Slower Pace

28:17

13% of race

Average Pace: 8:36 /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 mi11:14:0524:007:4324:00
7:43
#14197
10K
6.21 mi11:38:4748:427:5024:42
7:57
#15140
15K
9.32 mi12:04:011:13:567:5625:14
8:07
#15785
20K
12.43 mi12:29:491:39:448:0225:48
8:18
#16132
Half
13.11 mi12:35:211:45:168:025:32
8:07
#16172
25K
15.53 mi12:55:512:05:468:0620:30
8:27
#16300
30K
18.64 mi13:23:322:33:278:1427:41
8:55
#16421
20M
20.00 mi13:36:242:46:198:1912:52
9:28
#16615
21M
21.00 mi13:48:262:58:218:3012:02
12:02
#17316
35K
21.75 mi13:55:083:05:038:316:42
8:57
#17327
23M
23.00 mi14:06:503:16:458:3311:42
9:21
#17377
24M
24.00 mi14:15:583:25:538:359:08
9:08
#17407
40K
24.85 mi14:23:413:33:368:367:43
9:02
#17369
25.2M
25.20 mi14:27:043:36:598:373:23
9:49
#17350
Finish
26.22 mi14:35:393:45:348:378:35
8:25
#17284
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi141974033403316904(Top 60%)5675(Top 46%)5675(Top 104%)
10K6.21 mi3.10 mi15140-9434633-6004633-60016089(Top 57%)5177(Top 42%)5177(Top 95%)
15K9.32 mi3.11 mi15785-6455009-3765009-37616904(Top 60%)5675(Top 46%)5675(Top 104%)
20K12.43 mi3.11 mi16132-3475229-2205229-22016965(Top 60%)5758(Top 47%)5758(Top 105%)
Half13.11 mi0.68 mi16172-405261-325261-3216757(Top 59%)5632(Top 46%)5632(Top 103%)
25K15.53 mi2.42 mi16300-1285342-815342-8116929(Top 60%)5818(Top 48%)5818(Top 106%)
30K18.64 mi3.11 mi16421-1215481-1395481-13917219(Top 61%)6145(Top 50%)6145(Top 112%)
20M20.00 mi1.36 mi16615-1945620-1395620-13919038(Top 67%)7274(Top 59%)7274(Top 133%)
21M21.00 mi1.00 mi17316-7016067-4476067-44723657(Top 83%)9840(Top 80%)9840(Top 180%)
35K21.75 mi0.75 mi17327-116098-316098-3118031(Top 63%)6913(Top 57%)6913(Top 126%)
23M23.00 mi1.25 mi17377-506156-586156-5818000(Top 63%)6980(Top 57%)6980(Top 128%)
24M24.00 mi1.00 mi17407-306193-376193-3718044(Top 64%)7054(Top 58%)7054(Top 129%)
40K24.85 mi0.85 mi17369+386196-36196-316480(Top 58%)6303(Top 52%)6303(Top 115%)
25.2M25.20 mi0.35 mi17350+196198-26198-216213(Top 57%)6198(Top 51%)6198(Top 113%)
Finish26.22 mi1.02 mi17284+666180+186180+1815764(Top 55%)5896(Top 48%)5896(Top 108%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21story building
+97ft-345ft

Overall

16904

Females

5675

F18-39

5675

5K→10K

3.1 - 6.2 mi

Top 57%
×5story building
+79ft-138ft

Overall

16089

Females

5177

F18-39

5177

10K→15K

6.2 - 9.3 mi

Top 60%
×3story building
+67ft-78ft

Overall

16904

Females

5675

F18-39

5675

15K→20K

9.3 - 12.4 mi

Top 60%
×5story building
+106ft-86ft

Overall

16965

Females

5758

F18-39

5758

20K→Half

12.4 - 13.1 mi

Top 59%
×2story building
+19ft-37ft

Overall

16757

Females

5632

F18-39

5632

Half→25K

13.1 - 15.5 mi

Top 60%
×4story building
+66ft-88ft

Overall

16929

Females

5818

F18-39

5818

25K→30K

15.5 - 18.6 mi

Top 61%
×9story building
+181ft-148ft

Overall

17219

Females

6145

F18-39

6145

30K→20M

18.6 - 20.0 mi

Top 67%
×5story building
+64ft-50ft

Overall

19038

Females

7274

F18-39

7274

20M→21M

20.0 - 21.0 mi

Top 83%
×8story building
+106ft-24ft

Overall

23657

Females

9840

F18-39

9840

21M→35K

21.0 - 21.8 mi

Top 63%
×7story building
+17ft-86ft

Overall

18031

Females

6913

F18-39

6913

35K→23M

21.8 - 23.0 mi

Top 63%
×5story building
+23ft-63ft

Overall

18000

Females

6980

F18-39

6980

23M→24M

23.0 - 24.0 mi

Top 64%
×6story building
+12ft-82ft

Overall

18044

Females

7054

F18-39

7054

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

16480

Females

6303

F18-39

6303

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1story
+13ft-16ft

Overall

16213

Females

6198

F18-39

6198

25.2M→Finish

25.2 - 26.2 mi

Top 55%
×2story building
+22ft-21ft

Overall

15764

Females

5896

F18-39

5896

Passing Analysis

Category:
Athletes Passed
1128
Passed By
4215
Net Change
-3087
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14197
5K → 10K671010-943#14197#15140
10K → 15K71716-645#15140#15785
15K → 20K113460-347#15785#16132
20K → Half1858-40#16132#16172
Half → 25K122250-128#16172#16300
25K → 30K198319-121#16300#16421
30K → 20M58252-194#16421#16615
20M → 21M21722-701#16615#17316
21M → 35K5768-11#17316#17327
35K → 23M105155-50#17327#17377
23M → 24M71101-30#17377#17407
24M → 40K8850+38#17407#17369
40K → 25.2M4021+19#17369#17350
25.2M → Finish9933+66#17350#17284
TOTALS11284215-3087
📊

Passing Visuals

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