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BOSTON MARATHON 2025

Charlotte Cox

Bib: 13397•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 36%
Gender (Female)
#0 / 12228
Top 19%
Division (F18-39)
#0 / 5469
Top 33%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:23
Rank: #12471
Start → 5K
23:23 | 7:32/mi
10K· 6.21 mi
46:45
Rank: #12342 (+129)
5K → 10K
23:22 | 7:31/mi
15K· 9.32 mi
1:10:16
Rank: #12323 (+19)
10K → 15K
23:31 | 7:34/mi
20K· 12.43 mi
1:34:11
Rank: #12307 (+16)
15K → 20K
23:55 | 7:42/mi
Half· 13.11 mi
1:39:16
Rank: #12270 (+37)
20K → Half
5:05 | 7:27/mi
25K· 15.53 mi
1:57:51
Rank: #12062 (+208)
Half → 25K
18:35 | 7:40/mi
30K· 18.64 mi
2:22:16
Rank: #11678 (+384)
25K → 30K
24:25 | 7:52/mi
20M
2:32:55
Rank: #11440 (+238)
30K → 20M
10:39 | 7:50/mi
21M
2:40:57
Rank: #11187 (+253)
20M → 21M
8:02 | 8:02/mi
35K· 21.75 mi
2:46:31
Rank: #11048 (+139)
21M → 35K
5:34 | 7:26/mi
23M
2:56:16
Rank: #10848 (+200)
35K → 23M
9:45 | 7:47/mi
24M
3:03:43
Rank: #10659 (+189)
23M → 24M
7:27 | 7:27/mi
40K· 24.85 mi
3:10:14
Rank: #10516 (+143)
24M → 40K
6:31 | 7:37/mi
25.2M
3:13:00
Rank: #10411 (+105)
40K → 25.2M
2:46 | 8:01/mi
Finish· 26.22 mi
3:20:10
Rank: #10202 (+209)
25.2M → Finish
7:10 | 7:02/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:16
Pace7:34 /mi
2nd Half
Distance13.11 mi
Time1:40:54
Pace7:42 /mi
📊Positive Split: 1.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:2023:237:3223:23
7:32
-
10K
6.21 mi11:15:4246:457:3123:22
7:31
-0:01
15K
9.32 mi11:39:131:10:167:3223:31
7:34
+0:03
20K
12.43 mi12:03:081:34:117:3523:55
7:42
+0:08
Half
13.11 mi12:08:131:39:167:345:05
7:27
-0:15
25K
15.53 mi12:26:481:57:517:3518:35
7:40
+0:13
30K
18.64 mi12:51:132:22:167:3824:25
7:52
+0:12
20M
20.00 mi13:01:522:32:557:3910:39
7:50
-0:02
21M
21.00 mi13:09:542:40:577:408:02
8:02
+0:12
35K
21.75 mi13:15:282:46:317:395:34
7:26
-0:36
23M
23.00 mi13:25:132:56:167:409:45
7:47
+0:21
24M
24.00 mi13:32:403:03:437:397:27
7:27
-0:20
40K
24.85 mi13:39:113:10:147:396:31
7:37
+0:10
25.2M
25.20 mi13:41:573:13:007:402:46
8:01
+0:24
Finish
26.22 mi13:49:073:20:107:387:10
7:02
-0:59

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

7:02 /mi

Average Pace

7:38 /mi

Slowest Pace

8:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:24:33

72% of race

Time at Steady Pace

55:37

28% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:38 /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 mi10:52:2023:237:3223:23
7:32
#12471
10K
6.21 mi11:15:4246:457:3123:22
7:31
#12342
15K
9.32 mi11:39:131:10:167:3223:31
7:34
#12323
20K
12.43 mi12:03:081:34:117:3523:55
7:42
#12307
Half
13.11 mi12:08:131:39:167:345:05
7:27
#12270
25K
15.53 mi12:26:481:57:517:3518:35
7:40
#12062
30K
18.64 mi12:51:132:22:167:3824:25
7:52
#11678
20M
20.00 mi13:01:522:32:557:3910:39
7:50
#11440
21M
21.00 mi13:09:542:40:577:408:02
8:02
#11187
35K
21.75 mi13:15:282:46:317:395:34
7:26
#11048
23M
23.00 mi13:25:132:56:167:409:45
7:47
#10848
24M
24.00 mi13:32:403:03:437:397:27
7:27
#10659
40K
24.85 mi13:39:113:10:147:396:31
7:37
#10516
25.2M
25.20 mi13:41:573:13:007:402:46
8:01
#10411
Finish
26.22 mi13:49:073:20:107:387:10
7:02
#10202
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi124713048304812333(Top 43%)3075(Top 25%)3075(Top 56%)
10K6.21 mi3.10 mi12342+1292983+652983+6512307(Top 43%)2979(Top 24%)2979(Top 54%)
15K9.32 mi3.11 mi12323+193011-283011-2812333(Top 43%)3075(Top 25%)3075(Top 56%)
20K12.43 mi3.11 mi12307+163034-233034-2312392(Top 44%)3213(Top 26%)3213(Top 59%)
Half13.11 mi0.68 mi12270+373021+133021+1311359(Top 40%)2604(Top 21%)2604(Top 48%)
25K15.53 mi2.42 mi12062+2082949+722949+7211275(Top 40%)2724(Top 22%)2724(Top 50%)
30K18.64 mi3.11 mi11678+3842828+1212828+12110349(Top 36%)2458(Top 20%)2458(Top 45%)
20M20.00 mi1.36 mi11440+2382744+842744+849311(Top 33%)2129(Top 17%)2129(Top 39%)
21M21.00 mi1.00 mi11187+2532651+932651+937569(Top 27%)1549(Top 13%)1549(Top 28%)
35K21.75 mi0.75 mi11048+1392600+512600+518273(Top 29%)1801(Top 15%)1801(Top 33%)
23M23.00 mi1.25 mi10848+2002532+682532+688524(Top 30%)2055(Top 17%)2055(Top 38%)
24M24.00 mi1.00 mi10659+1892478+542478+547390(Top 26%)1620(Top 13%)1620(Top 30%)
40K24.85 mi0.85 mi10516+1432419+592419+597616(Top 27%)1821(Top 15%)1821(Top 33%)
25.2M25.20 mi0.35 mi10411+1052391+282391+286176(Top 22%)1334(Top 11%)1334(Top 24%)
Finish26.22 mi1.02 mi10202+2092322+692322+695997(Top 21%)1260(Top 10%)1260(Top 23%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 43%
×21stories
+97ft-345ft

Overall

12333

Females

3075

F18-39

3075

5K→10K

3.1 - 6.2 mi

Top 43%
×5stories
+79ft-138ft

Overall

12307

Females

2979

F18-39

2979

10K→15K

6.2 - 9.3 mi

Top 43%
×3stories
+67ft-78ft

Overall

12333

Females

3075

F18-39

3075

15K→20K

9.3 - 12.4 mi

Top 44%
×5stories
+106ft-86ft

Overall

12392

Females

3213

F18-39

3213

20K→Half

12.4 - 13.1 mi

Top 40%
×2stories
+19ft-37ft

Overall

11359

Females

2604

F18-39

2604

Half→25K

13.1 - 15.5 mi

Top 40%
×4stories
+66ft-88ft

Overall

11275

Females

2724

F18-39

2724

25K→30K

15.5 - 18.6 mi

Top 36%
×9stories
+181ft-148ft

Overall

10349

Females

2458

F18-39

2458

30K→20M

18.6 - 20.0 mi

Top 33%
×5stories
+64ft-50ft

Overall

9311

Females

2129

F18-39

2129

20M→21M

20.0 - 21.0 mi

Top 27%
×8stories
+106ft-24ft

Overall

7569

Females

1549

F18-39

1549

21M→35K

21.0 - 21.8 mi

Top 29%
×7stories
+17ft-86ft

Overall

8273

Females

1801

F18-39

1801

35K→23M

21.8 - 23.0 mi

Top 30%
×5stories
+23ft-63ft

Overall

8524

Females

2055

F18-39

2055

23M→24M

23.0 - 24.0 mi

Top 26%
×6stories
+12ft-82ft

Overall

7390

Females

1620

F18-39

1620

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7616

Females

1821

F18-39

1821

40K→25.2M

24.9 - 25.2 mi

Top 22%
×1story
+13ft-16ft

Overall

6176

Females

1334

F18-39

1334

25.2M→Finish

25.2 - 26.2 mi

Top 21%
×2stories
+22ft-21ft

Overall

5997

Females

1260

F18-39

1260

Passing Analysis

Category:
Athletes Passed
3021
Passed By
752
Net Change
+2269
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12471
5K → 10K339210+129#12471#12342
10K → 15K190171+19#12342#12323
15K → 20K192176+16#12323#12307
20K → Half4710+37#12307#12270
Half → 25K26456+208#12270#12062
25K → 30K43652+384#12062#11678
30K → 20M25416+238#11678#11440
20M → 21M2552+253#11440#11187
21M → 35K1489+139#11187#11048
35K → 23M22020+200#11048#10848
23M → 24M1978+189#10848#10659
24M → 40K15613+143#10659#10516
40K → 25.2M1072+105#10516#10411
25.2M → Finish2167+209#10411#10202
TOTALS3021752+2269
📊

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