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BOSTON MARATHON 2025

Chris Withbroe

Bib: 23739•F

CO

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 45%
Division (F50-54)
#0 / 1303
Top 42%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:47
Rank: #22180
Start → 5K
27:47 | 8:57/mi
10K· 6.21 mi
55:33
Rank: #22156 (+24)
5K → 10K
27:46 | 8:56/mi
15K· 9.32 mi
1:23:10
Rank: #21927 (+229)
10K → 15K
27:37 | 8:53/mi
20K· 12.43 mi
1:50:33
Rank: #21426 (+501)
15K → 20K
27:23 | 8:49/mi
Half· 13.11 mi
1:56:18
Rank: #21278 (+148)
20K → Half
5:45 | 8:26/mi
25K· 15.53 mi
2:17:14
Rank: #20782 (+496)
Half → 25K
20:56 | 8:38/mi
30K· 18.64 mi
2:44:06
Rank: #19880 (+902)
25K → 30K
26:52 | 8:39/mi
20M
2:55:42
Rank: #19485 (+395)
30K → 20M
11:36 | 8:32/mi
21M
3:05:09
Rank: #19268 (+217)
20M → 21M
9:27 | 9:27/mi
35K· 21.75 mi
3:11:12
Rank: #19061 (+207)
21M → 35K
6:03 | 8:05/mi
23M
3:21:54
Rank: #18745 (+316)
35K → 23M
10:42 | 8:33/mi
24M
3:30:36
Rank: #18610 (+135)
23M → 24M
8:42 | 8:42/mi
40K· 24.85 mi
3:37:44
Rank: #18379 (+231)
24M → 40K
7:08 | 8:21/mi
25.2M
3:41:16
Rank: #18374 (+5)
40K → 25.2M
3:32 | 10:15/mi
Finish· 26.22 mi
3:49:32
Rank: #18216 (+158)
25.2M → Finish
8:16 | 8:07/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:56:18
Pace8:52 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:53:14
Pace8:38 /mi
📊Negative Split: 2.6% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:25:4427:478:5727:47
8:57
-
10K
6.21 mi11:53:3055:338:5627:46
8:56
-0:01
15K
9.32 mi12:21:071:23:108:5527:37
8:53
-0:03
20K
12.43 mi12:48:301:50:338:5427:23
8:49
-0:04
Half
13.11 mi12:54:151:56:188:525:45
8:26
-0:23
25K
15.53 mi13:15:112:17:148:5020:56
8:38
+0:12
30K
18.64 mi13:42:032:44:068:4826:52
8:39
+0:01
20M
20.00 mi13:53:392:55:428:4711:36
8:32
-0:07
21M
21.00 mi14:03:063:05:098:499:27
9:27
+0:55
35K
21.75 mi14:09:093:11:128:476:03
8:05
-1:22
23M
23.00 mi14:19:513:21:548:4710:42
8:33
+0:28
24M
24.00 mi14:28:333:30:368:478:42
8:42
+0:09
40K
24.85 mi14:35:413:37:448:467:08
8:21
-0:21
25.2M
25.20 mi14:39:133:41:168:473:32
10:15
+1:54
Finish
26.22 mi14:47:293:49:328:468:16
8:07
-2:08

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

8:05 /mi

Average Pace

8:46 /mi

Slowest Pace

10:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

21:27

9% of race

Time at Steady Pace

2:19:33

61% of race

Time at Slower Pace

1:08:32

30% 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 mi11:25:4427:478:5727:47
8:57
#22180
10K
6.21 mi11:53:3055:338:5627:46
8:56
#22156
15K
9.32 mi12:21:071:23:108:5527:37
8:53
#21927
20K
12.43 mi12:48:301:50:338:5427:23
8:49
#21426
Half
13.11 mi12:54:151:56:188:525:45
8:26
#21278
25K
15.53 mi13:15:112:17:148:5020:56
8:38
#20782
30K
18.64 mi13:42:032:44:068:4826:52
8:39
#19880
20M
20.00 mi13:53:392:55:428:4711:36
8:32
#19485
21M
21.00 mi14:03:063:05:098:499:27
9:27
#19268
35K
21.75 mi14:09:093:11:128:476:03
8:05
#19061
23M
23.00 mi14:19:513:21:548:4710:42
8:33
#18745
24M
24.00 mi14:28:333:30:368:478:42
8:42
#18610
40K
24.85 mi14:35:413:37:448:467:08
8:21
#18379
25.2M
25.20 mi14:39:133:41:168:473:32
10:15
#18374
Finish
26.22 mi14:47:293:49:328:468:16
8:07
#18216
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi221808724872421518(Top 76%)8285(Top 68%)8285(Top 636%)
10K6.21 mi3.10 mi22156+248699+258699+2522106(Top 78%)8655(Top 71%)8655(Top 664%)
15K9.32 mi3.11 mi21927+2298557+1428557+14221518(Top 76%)8285(Top 68%)8285(Top 636%)
20K12.43 mi3.11 mi21426+5018277+2808277+28020006(Top 70%)7480(Top 61%)7480(Top 574%)
Half13.11 mi0.68 mi21278+1488187+908187+9018781(Top 66%)6775(Top 55%)6775(Top 520%)
25K15.53 mi2.42 mi20782+4967920+2677920+26718022(Top 63%)6443(Top 53%)6443(Top 494%)
30K18.64 mi3.11 mi19880+9027452+4687452+46815704(Top 55%)5290(Top 43%)5290(Top 406%)
20M20.00 mi1.36 mi19485+3957256+1967256+19614047(Top 49%)4550(Top 37%)4550(Top 349%)
21M21.00 mi1.00 mi19268+2177151+1057151+10515886(Top 56%)5655(Top 46%)5655(Top 434%)
35K21.75 mi0.75 mi19061+2077054+977054+9712917(Top 45%)4136(Top 34%)4136(Top 317%)
23M23.00 mi1.25 mi18745+3166906+1486906+14813633(Top 48%)4617(Top 38%)4617(Top 354%)
24M24.00 mi1.00 mi18610+1356852+546852+5415787(Top 56%)5805(Top 47%)5805(Top 446%)
40K24.85 mi0.85 mi18379+2316756+966756+9612484(Top 44%)4193(Top 34%)4193(Top 322%)
25.2M25.20 mi0.35 mi18374+56763-76763-718129(Top 64%)7204(Top 59%)7204(Top 553%)
Finish26.22 mi1.02 mi18216+1586689+746689+7413728(Top 48%)4826(Top 39%)4826(Top 370%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 76%
×21stories
+97ft-345ft

Overall

21518

Females

8285

F50-54

8285

5K→10K

3.1 - 6.2 mi

Top 78%
×5stories
+79ft-138ft

Overall

22106

Females

8655

F50-54

8655

10K→15K

6.2 - 9.3 mi

Top 76%
×3stories
+67ft-78ft

Overall

21518

Females

8285

F50-54

8285

15K→20K

9.3 - 12.4 mi

Top 70%
×5stories
+106ft-86ft

Overall

20006

Females

7480

F50-54

7480

20K→Half

12.4 - 13.1 mi

Top 66%
×2stories
+19ft-37ft

Overall

18781

Females

6775

F50-54

6775

Half→25K

13.1 - 15.5 mi

Top 63%
×4stories
+66ft-88ft

Overall

18022

Females

6443

F50-54

6443

25K→30K

15.5 - 18.6 mi

Top 55%
×9stories
+181ft-148ft

Overall

15704

Females

5290

F50-54

5290

30K→20M

18.6 - 20.0 mi

Top 49%
×5stories
+64ft-50ft

Overall

14047

Females

4550

F50-54

4550

20M→21M

20.0 - 21.0 mi

Top 56%
×8stories
+106ft-24ft

Overall

15886

Females

5655

F50-54

5655

21M→35K

21.0 - 21.8 mi

Top 45%
×7stories
+17ft-86ft

Overall

12917

Females

4136

F50-54

4136

35K→23M

21.8 - 23.0 mi

Top 48%
×5stories
+23ft-63ft

Overall

13633

Females

4617

F50-54

4617

23M→24M

23.0 - 24.0 mi

Top 56%
×6stories
+12ft-82ft

Overall

15787

Females

5805

F50-54

5805

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

12484

Females

4193

F50-54

4193

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1story
+13ft-16ft

Overall

18129

Females

7204

F50-54

7204

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2stories
+22ft-21ft

Overall

13728

Females

4826

F50-54

4826

Passing Analysis

Category:
Athletes Passed
4375
Passed By
411
Net Change
+3964
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22180
5K → 10K272248+24#22180#22156
10K → 15K31687+229#22156#21927
15K → 20K51817+501#21927#21426
20K → Half1513+148#21426#21278
Half → 25K4971+496#21278#20782
25K → 30K9031+902#20782#19880
30K → 20M3961+395#19880#19485
20M → 21M2258+217#19485#19268
21M → 35K2103+207#19268#19061
35K → 23M3182+316#19061#18745
23M → 24M1372+135#18745#18610
24M → 40K2365+231#18610#18379
40K → 25.2M2419+5#18379#18374
25.2M → Finish17214+158#18374#18216
TOTALS4375411+3964
📊

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