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BOSTON MARATHON 2025

Chelsea Frei

Bib: 19259•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 46%
Gender (Female)
#0 / 12228
Top 31%
Masters (Masters Women)
#0 / 6759
Top 16%
Division (F40-44)
#0 / 1718
Top 33%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:32
Rank: #15659
Start → 5K
24:32 | 7:54/mi
10K· 6.21 mi
48:46
Rank: #15230 (+429)
5K → 10K
24:14 | 7:48/mi
15K· 9.32 mi
1:12:46
Rank: #14676 (+554)
10K → 15K
24:00 | 7:43/mi
20K· 12.43 mi
1:36:53
Rank: #14219 (+457)
15K → 20K
24:07 | 7:46/mi
Half· 13.11 mi
1:42:05
Rank: #14143 (+76)
20K → Half
5:12 | 7:37/mi
25K· 15.53 mi
2:00:56
Rank: #13766 (+377)
Half → 25K
18:51 | 7:46/mi
30K· 18.64 mi
2:25:59
Rank: #13349 (+417)
25K → 30K
25:03 | 8:04/mi
20M
2:37:05
Rank: #13169 (+180)
30K → 20M
11:06 | 8:10/mi
21M
2:45:37
Rank: #12977 (+192)
20M → 21M
8:32 | 8:32/mi
35K· 21.75 mi
2:51:31
Rank: #12914 (+63)
21M → 35K
5:54 | 7:53/mi
23M
3:01:45
Rank: #12778 (+136)
35K → 23M
10:14 | 8:10/mi
24M
3:10:16
Rank: #12859 (-81)
23M → 24M
8:31 | 8:31/mi
40K· 24.85 mi
3:17:46
Rank: #12946 (-87)
24M → 40K
7:30 | 8:46/mi
25.2M
3:21:08
Rank: #13013 (-67)
40K → 25.2M
3:22 | 9:46/mi
Finish· 26.22 mi
3:29:23
Rank: #13041 (-28)
25.2M → Finish
8:15 | 8:06/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:05
Pace7:47 /mi
2nd Half
Distance13.11 mi
Time1:47:18
Pace8:11 /mi
📊Positive Split: 5.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:1724:327:5424:32
7:54
-
10K
6.21 mi11:41:3148:467:5124:14
7:48
-0:06
15K
9.32 mi12:05:311:12:467:4824:00
7:43
-0:05
20K
12.43 mi12:29:381:36:537:4824:07
7:46
+0:03
Half
13.11 mi12:34:501:42:057:475:12
7:37
-0:09
25K
15.53 mi12:53:412:00:567:4718:51
7:46
+0:09
30K
18.64 mi13:18:442:25:597:5025:03
8:04
+0:18
20M
20.00 mi13:29:502:37:057:5111:06
8:10
+0:06
21M
21.00 mi13:38:222:45:377:538:32
8:32
+0:22
35K
21.75 mi13:44:162:51:317:535:54
7:53
-0:39
23M
23.00 mi13:54:303:01:457:5410:14
8:10
+0:17
24M
24.00 mi14:03:013:10:167:568:31
8:31
+0:21
40K
24.85 mi14:10:313:17:467:577:30
8:46
+0:15
25.2M
25.20 mi14:13:533:21:087:593:22
9:46
+1:00
Finish
26.22 mi14:22:083:29:238:008:15
8:06
-1:40

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

7:37 /mi

Average Pace

8:00 /mi

Slowest Pace

9:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:12:10

34% of race

Time at Steady Pace

1:49:18

52% of race

Time at Slower Pace

27:55

13% 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 mi11:17:1724:327:5424:32
7:54
#15659
10K
6.21 mi11:41:3148:467:5124:14
7:48
#15230
15K
9.32 mi12:05:311:12:467:4824:00
7:43
#14676
20K
12.43 mi12:29:381:36:537:4824:07
7:46
#14219
Half
13.11 mi12:34:501:42:057:475:12
7:37
#14143
25K
15.53 mi12:53:412:00:567:4718:51
7:46
#13766
30K
18.64 mi13:18:442:25:597:5025:03
8:04
#13349
20M
20.00 mi13:29:502:37:057:5111:06
8:10
#13169
21M
21.00 mi13:38:222:45:377:538:32
8:32
#12977
35K
21.75 mi13:44:162:51:317:535:54
7:53
#12914
23M
23.00 mi13:54:303:01:457:5410:14
8:10
#12778
24M
24.00 mi14:03:013:10:167:568:31
8:31
#12859
40K
24.85 mi14:10:313:17:467:577:30
8:46
#12946
25.2M
25.20 mi14:13:533:21:087:593:22
9:46
#13013
Finish
26.22 mi14:22:083:29:238:008:15
8:06
#13041
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi156594926492613752(Top 48%)3870(Top 32%)3870(Top 225%)
10K6.21 mi3.10 mi15230+4294679+2474679+24714813(Top 52%)4432(Top 36%)4432(Top 258%)
15K9.32 mi3.11 mi14676+5544358+3214358+32113752(Top 48%)3870(Top 32%)3870(Top 225%)
20K12.43 mi3.11 mi14219+4574132+2264132+22612982(Top 46%)3541(Top 29%)3541(Top 206%)
Half13.11 mi0.68 mi14143+764088+444088+4412840(Top 45%)3419(Top 28%)3419(Top 199%)
25K15.53 mi2.42 mi13766+3773907+1813907+18112164(Top 43%)3206(Top 26%)3206(Top 187%)
30K18.64 mi3.11 mi13349+4173742+1653742+16511845(Top 42%)3220(Top 26%)3220(Top 187%)
20M20.00 mi1.36 mi13169+1803672+703672+7011642(Top 41%)3264(Top 27%)3264(Top 190%)
21M21.00 mi1.00 mi12977+1923599+733599+7310728(Top 38%)2976(Top 24%)2976(Top 173%)
35K21.75 mi0.75 mi12914+633579+203579+2011516(Top 41%)3388(Top 28%)3388(Top 197%)
23M23.00 mi1.25 mi12778+1363541+383541+3811231(Top 40%)3348(Top 27%)3348(Top 195%)
24M24.00 mi1.00 mi12859-813623-823623-8214623(Top 51%)5159(Top 42%)5159(Top 300%)
40K24.85 mi0.85 mi12946-873703-803703-8015030(Top 53%)5525(Top 45%)5525(Top 322%)
25.2M25.20 mi0.35 mi13013-673748-453748-4515930(Top 56%)6035(Top 49%)6035(Top 351%)
Finish26.22 mi1.02 mi13041-283780-323780-3213572(Top 48%)4730(Top 39%)4730(Top 275%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21stories
+97ft-345ft

Overall

13752

Females

3870

F40-44

3870

5K→10K

3.1 - 6.2 mi

Top 52%
×5stories
+79ft-138ft

Overall

14813

Females

4432

F40-44

4432

10K→15K

6.2 - 9.3 mi

Top 48%
×3stories
+67ft-78ft

Overall

13752

Females

3870

F40-44

3870

15K→20K

9.3 - 12.4 mi

Top 46%
×5stories
+106ft-86ft

Overall

12982

Females

3541

F40-44

3541

20K→Half

12.4 - 13.1 mi

Top 45%
×2stories
+19ft-37ft

Overall

12840

Females

3419

F40-44

3419

Half→25K

13.1 - 15.5 mi

Top 43%
×4stories
+66ft-88ft

Overall

12164

Females

3206

F40-44

3206

25K→30K

15.5 - 18.6 mi

Top 42%
×9stories
+181ft-148ft

Overall

11845

Females

3220

F40-44

3220

30K→20M

18.6 - 20.0 mi

Top 41%
×5stories
+64ft-50ft

Overall

11642

Females

3264

F40-44

3264

20M→21M

20.0 - 21.0 mi

Top 38%
×8stories
+106ft-24ft

Overall

10728

Females

2976

F40-44

2976

21M→35K

21.0 - 21.8 mi

Top 41%
×7stories
+17ft-86ft

Overall

11516

Females

3388

F40-44

3388

35K→23M

21.8 - 23.0 mi

Top 40%
×5stories
+23ft-63ft

Overall

11231

Females

3348

F40-44

3348

23M→24M

23.0 - 24.0 mi

Top 51%
×6stories
+12ft-82ft

Overall

14623

Females

5159

F40-44

5159

24M→40K

24.0 - 24.9 mi

Top 53%
×1story
+6ft-20ft

Overall

15030

Females

5525

F40-44

5525

40K→25.2M

24.9 - 25.2 mi

Top 56%
×1story
+13ft-16ft

Overall

15930

Females

6035

F40-44

6035

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2stories
+22ft-21ft

Overall

13572

Females

4730

F40-44

4730

Passing Analysis

Category:
Athletes Passed
3429
Passed By
811
Net Change
+2618
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15659
5K → 10K570141+429#15659#15230
10K → 15K58430+554#15230#14676
15K → 20K48225+457#14676#14219
20K → Half793+76#14219#14143
Half → 25K39720+377#14143#13766
25K → 30K46649+417#13766#13349
30K → 20M21030+180#13349#13169
20M → 21M21220+192#13169#12977
21M → 35K8926+63#12977#12914
35K → 23M16832+136#12914#12778
23M → 24M57138-81#12778#12859
24M → 40K47134-87#12859#12946
40K → 25.2M1784-67#12946#13013
25.2M → Finish5179-28#13013#13041
TOTALS3429811+2618
📊

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