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BOSTON MARATHON 2025

Cynthia Mathias

Bib: 18952•F

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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
25:00
Rank: #16982
Start → 5K
25:00 | 8:03/mi
10K· 6.21 mi
49:51
Rank: #16705 (+277)
5K → 10K
24:51 | 8:00/mi
15K· 9.32 mi
1:15:14
Rank: #16869 (-164)
10K → 15K
25:23 | 8:10/mi
20K· 12.43 mi
1:41:22
Rank: #17084 (-215)
15K → 20K
26:08 | 8:25/mi
Half· 13.11 mi
1:47:04
Rank: #17118 (-34)
20K → Half
5:42 | 8:21/mi
25K· 15.53 mi
2:08:13
Rank: #17302 (-184)
Half → 25K
21:09 | 8:43/mi
30K· 18.64 mi
2:37:00
Rank: #17612 (-310)
25K → 30K
28:47 | 9:16/mi
20M
2:49:13
Rank: #17532 (+80)
30K → 20M
12:13 | 8:59/mi
21M
2:58:53
Rank: #17486 (+46)
20M → 21M
9:40 | 9:40/mi
35K· 21.75 mi
3:05:23
Rank: #17441 (+45)
21M → 35K
6:30 | 8:41/mi
23M
3:17:09
Rank: #17487 (-46)
35K → 23M
11:46 | 9:24/mi
24M
3:26:29
Rank: #17568 (-81)
23M → 24M
9:20 | 9:20/mi
40K· 24.85 mi
3:36:21
Rank: #18038 (-470)
24M → 40K
9:52 | 11:32/mi
25.2M
3:39:56
Rank: #18064 (-26)
40K → 25.2M
3:35 | 10:23/mi
Finish· 26.22 mi
3:49:21
Rank: #18168 (-104)
25.2M → Finish
9:25 | 9:14/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:04
Pace8:10 /mi
2nd Half
Distance13.11 mi
Time2:02:17
Pace9:20 /mi
📊Positive Split: 14.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:1525:008:0325:00
8:03
-
10K
6.21 mi11:41:0649:518:0124:51
8:00
-0:03
15K
9.32 mi12:06:291:15:148:0425:23
8:10
+0:10
20K
12.43 mi12:32:371:41:228:0926:08
8:25
+0:15
Half
13.11 mi12:38:191:47:048:105:42
8:21
-0:04
25K
15.53 mi12:59:282:08:138:1521:09
8:43
+0:22
30K
18.64 mi13:28:152:37:008:2528:47
9:16
+0:33
20M
20.00 mi13:40:282:49:138:2812:13
8:59
-0:17
21M
21.00 mi13:50:082:58:538:319:40
9:40
+0:41
35K
21.75 mi13:56:383:05:238:316:30
8:41
-0:59
23M
23.00 mi14:08:243:17:098:3411:46
9:24
+0:43
24M
24.00 mi14:17:443:26:298:369:20
9:20
-0:04
40K
24.85 mi14:27:363:36:218:429:52
11:32
+2:12
25.2M
25.20 mi14:31:113:39:568:443:35
10:23
-1:09
Finish
26.22 mi14:40:363:49:218:459:25
9:14
-1:09

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

8:00 /mi

Average Pace

8:45 /mi

Slowest Pace

11:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:47:04

47% of race

Time at Steady Pace

1:39:10

43% of race

Time at Slower Pace

23:07

10% of race

Average Pace: 8:45 /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 mi11:16:1525:008:0325:00
8:03
#16982
10K
6.21 mi11:41:0649:518:0124:51
8:00
#16705
15K
9.32 mi12:06:291:15:148:0425:23
8:10
#16869
20K
12.43 mi12:32:371:41:228:0926:08
8:25
#17084
Half
13.11 mi12:38:191:47:048:105:42
8:21
#17118
25K
15.53 mi12:59:282:08:138:1521:09
8:43
#17302
30K
18.64 mi13:28:152:37:008:2528:47
9:16
#17612
20M
20.00 mi13:40:282:49:138:2812:13
8:59
#17532
21M
21.00 mi13:50:082:58:538:319:40
9:40
#17486
35K
21.75 mi13:56:383:05:238:316:30
8:41
#17441
23M
23.00 mi14:08:243:17:098:3411:46
9:24
#17487
24M
24.00 mi14:17:443:26:298:369:20
9:20
#17568
40K
24.85 mi14:27:363:36:218:429:52
11:32
#18038
25.2M
25.20 mi14:31:113:39:568:443:35
10:23
#18064
Finish
26.22 mi14:40:363:49:218:459:25
9:14
#18168
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi169825731573117215(Top 61%)5859(Top 48%)5859(Top 107%)
10K6.21 mi3.10 mi16705+2775557+1745557+17416491(Top 58%)5421(Top 44%)5421(Top 99%)
15K9.32 mi3.11 mi16869-1645648-915648-9117215(Top 61%)5859(Top 48%)5859(Top 107%)
20K12.43 mi3.11 mi17084-2155795-1475795-14717637(Top 62%)6133(Top 50%)6133(Top 112%)
Half13.11 mi0.68 mi17118-345819-245819-2418366(Top 65%)6543(Top 54%)6543(Top 120%)
25K15.53 mi2.42 mi17302-1845943-1245943-12418545(Top 65%)6729(Top 55%)6729(Top 123%)
30K18.64 mi3.11 mi17612-3106192-2496192-24918962(Top 67%)7095(Top 58%)7095(Top 130%)
20M20.00 mi1.36 mi17532+806163+296163+2916765(Top 59%)6018(Top 49%)6018(Top 110%)
21M21.00 mi1.00 mi17486+466161+26161+216899(Top 59%)6209(Top 51%)6209(Top 114%)
35K21.75 mi0.75 mi17441+456161616116658(Top 59%)6154(Top 50%)6154(Top 113%)
23M23.00 mi1.25 mi17487-466216-556216-5518242(Top 64%)7104(Top 58%)7104(Top 130%)
24M24.00 mi1.00 mi17568-816289-736289-7318972(Top 67%)7527(Top 62%)7527(Top 138%)
40K24.85 mi0.85 mi18038-4706564-2756564-27524211(Top 85%)10271(Top 84%)10271(Top 188%)
25.2M25.20 mi0.35 mi18064-266587-236587-2318635(Top 66%)7446(Top 61%)7446(Top 136%)
Finish26.22 mi1.02 mi18168-1046663-766663-7620141(Top 71%)8219(Top 67%)8219(Top 150%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21stories
+97ft-345ft

Overall

17215

Females

5859

F18-39

5859

5K→10K

3.1 - 6.2 mi

Top 58%
×5stories
+79ft-138ft

Overall

16491

Females

5421

F18-39

5421

10K→15K

6.2 - 9.3 mi

Top 61%
×3stories
+67ft-78ft

Overall

17215

Females

5859

F18-39

5859

15K→20K

9.3 - 12.4 mi

Top 62%
×5stories
+106ft-86ft

Overall

17637

Females

6133

F18-39

6133

20K→Half

12.4 - 13.1 mi

Top 65%
×2stories
+19ft-37ft

Overall

18366

Females

6543

F18-39

6543

Half→25K

13.1 - 15.5 mi

Top 65%
×4stories
+66ft-88ft

Overall

18545

Females

6729

F18-39

6729

25K→30K

15.5 - 18.6 mi

Top 67%
×9stories
+181ft-148ft

Overall

18962

Females

7095

F18-39

7095

30K→20M

18.6 - 20.0 mi

Top 59%
×5stories
+64ft-50ft

Overall

16765

Females

6018

F18-39

6018

20M→21M

20.0 - 21.0 mi

Top 59%
×8stories
+106ft-24ft

Overall

16899

Females

6209

F18-39

6209

21M→35K

21.0 - 21.8 mi

Top 59%
×7stories
+17ft-86ft

Overall

16658

Females

6154

F18-39

6154

35K→23M

21.8 - 23.0 mi

Top 64%
×5stories
+23ft-63ft

Overall

18242

Females

7104

F18-39

7104

23M→24M

23.0 - 24.0 mi

Top 67%
×6stories
+12ft-82ft

Overall

18972

Females

7527

F18-39

7527

24M→40K

24.0 - 24.9 mi

Top 85%
×1story
+6ft-20ft

Overall

24211

Females

10271

F18-39

10271

40K→25.2M

24.9 - 25.2 mi

Top 66%
×1story
+13ft-16ft

Overall

18635

Females

7446

F18-39

7446

25.2M→Finish

25.2 - 26.2 mi

Top 71%
×2stories
+22ft-21ft

Overall

20141

Females

8219

F18-39

8219

Passing Analysis

Category:
Athletes Passed
1581
Passed By
2767
Net Change
-1186
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16982
5K → 10K456179+277#16982#16705
10K → 15K160324-164#16705#16869
15K → 20K131346-215#16869#17084
20K → Half1852-34#17084#17118
Half → 25K118302-184#17118#17302
25K → 30K136446-310#17302#17612
30K → 20M14262+80#17612#17532
20M → 21M12579+46#17532#17486
21M → 35K8843+45#17486#17441
35K → 23M104150-46#17441#17487
23M → 24M50131-81#17487#17568
24M → 40K6476-470#17568#18038
40K → 25.2M1743-26#18038#18064
25.2M → Finish30134-104#18064#18168
TOTALS15812767-1186
📊

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