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BOSTON MARATHON 2025

Heather Mumford

Bib: 23446•F

VA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 39%
Masters (Masters Women)
#0 / 6759
Top 25%
Division (F50-54)
#0 / 1303
Top 16%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:09
Rank: #17321
Start → 5K
8:06/mi
25:09 split
10K· 6.21 mi
50:22
Rank: #17296 (+25)
5K → 10K
8:07/mi
25:13 split
15K· 9.32 mi
1:15:38
Rank: #17192 (+104)
10K → 15K
8:08/mi
25:16 split
20K· 12.43 mi
1:40:49
Rank: #16775 (+417)
15K → 20K
8:06/mi
25:11 split
Half· 13.11 mi
1:46:15
Rank: #16702 (+73)
20K → Half
7:58/mi
5:26 split
25K· 15.53 mi
2:06:14
Rank: #16494 (+208)
Half → 25K
8:15/mi
19:59 split
30K· 18.64 mi
2:32:26
Rank: #16067 (+427)
25K → 30K
8:26/mi
26:12 split
20M
2:43:57
Rank: #15849 (+218)
30K → 20M
8:28/mi
11:31 split
21M
2:52:55
Rank: #15646 (+203)
20M → 21M
8:58/mi
8:58 split
35K· 21.75 mi
2:58:48
Rank: #15474 (+172)
21M → 35K
7:52/mi
5:53 split
23M
3:09:08
Rank: #15214 (+260)
35K → 23M
8:15/mi
10:20 split
24M
3:17:31
Rank: #15100 (+114)
23M → 24M
8:23/mi
8:23 split
40K· 24.85 mi
3:24:37
Rank: #14978 (+122)
24M → 40K
8:18/mi
7:06 split
25.2M
3:27:58
Rank: #14974 (+4)
40K → 25.2M
9:43/mi
3:21 split
Finish· 26.22 mi
3:36:12
Rank: #14887 (+87)
25.2M → Finish
8:05/mi
8:14 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:15
Pace8:06 /mi
2nd Half
Distance13.11 mi
Time1:49:57
Pace8:23 /mi
📊Positive Split: 3.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:0625:098:0625:09
8:06
-
10K
6.21 mi11:46:1950:228:0625:13
8:07
+0:01
15K
9.32 mi12:11:351:15:388:0725:16
8:08
+0:01
20K
12.43 mi12:36:461:40:498:0725:11
8:06
-0:02
Half
13.11 mi12:42:121:46:158:065:26
7:58
-0:08
25K
15.53 mi13:02:112:06:148:0819:59
8:15
+0:17
30K
18.64 mi13:28:232:32:268:1126:12
8:26
+0:11
20M
20.00 mi13:39:542:43:578:1211:31
8:28
+0:02
21M
21.00 mi13:48:522:52:558:148:58
8:58
+0:30
35K
21.75 mi13:54:452:58:488:135:53
7:52
-1:06
23M
23.00 mi14:05:053:09:088:1310:20
8:15
+0:23
24M
24.00 mi14:13:283:17:318:148:23
8:23
+0:08
40K
24.85 mi14:20:343:24:378:147:06
8:18
-0:05
25.2M
25.20 mi14:23:553:27:588:153:21
9:43
+1:25
Finish
26.22 mi14:32:093:36:128:158:14
8:05
-1:38

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

7:52 /mi

Average Pace

8:15 /mi

Slowest Pace

9:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

11:19

5% of race

Time at Steady Pace

3:12:34

89% of race

Time at Slower Pace

12:19

6% of race

Average Pace: 8:15 /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 mi11:21:0625:098:0625:09
8:06
#17321
10K
6.21 mi11:46:1950:228:0625:13
8:07
#17296
15K
9.32 mi12:11:351:15:388:0725:16
8:08
#17192
20K
12.43 mi12:36:461:40:498:0725:11
8:06
#16775
Half
13.11 mi12:42:121:46:158:065:26
7:58
#16702
25K
15.53 mi13:02:112:06:148:0819:59
8:15
#16494
30K
18.64 mi13:28:232:32:268:1126:12
8:26
#16067
20M
20.00 mi13:39:542:43:578:1211:31
8:28
#15849
21M
21.00 mi13:48:522:52:558:148:58
8:58
#15646
35K
21.75 mi13:54:452:58:488:135:53
7:52
#15474
23M
23.00 mi14:05:053:09:088:1310:20
8:15
#15214
24M
24.00 mi14:13:283:17:318:148:23
8:23
#15100
40K
24.85 mi14:20:343:24:378:147:06
8:18
#14978
25.2M
25.20 mi14:23:553:27:588:153:21
9:43
#14974
Finish
26.22 mi14:32:093:36:128:158:14
8:05
#14887
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi173215926592616969(Top 60%)5713(Top 47%)5713(Top 438%)
10K6.21 mi3.10 mi17296+255902+245902+2417324(Top 61%)5891(Top 48%)5891(Top 452%)
15K9.32 mi3.11 mi17192+1045824+785824+7816969(Top 60%)5713(Top 47%)5713(Top 438%)
20K12.43 mi3.11 mi16775+4175605+2195605+21915681(Top 55%)5026(Top 41%)5026(Top 386%)
Half13.11 mi0.68 mi16702+735560+455560+4515659(Top 55%)4979(Top 41%)4979(Top 382%)
25K15.53 mi2.42 mi16494+2085455+1055455+10515577(Top 55%)5061(Top 41%)5061(Top 388%)
30K18.64 mi3.11 mi16067+4275260+1955260+19514362(Top 51%)4565(Top 37%)4565(Top 350%)
20M20.00 mi1.36 mi15849+2185183+775183+7713651(Top 48%)4324(Top 35%)4324(Top 332%)
21M21.00 mi1.00 mi15646+2035102+815102+8113340(Top 47%)4293(Top 35%)4293(Top 329%)
35K21.75 mi0.75 mi15474+1725012+905012+9011378(Top 40%)3330(Top 27%)3330(Top 256%)
23M23.00 mi1.25 mi15214+2604901+1114901+11111768(Top 41%)3628(Top 30%)3628(Top 278%)
24M24.00 mi1.00 mi15100+1144863+384863+3813789(Top 49%)4712(Top 39%)4712(Top 362%)
40K24.85 mi0.85 mi14978+1224821+424821+4212213(Top 43%)4035(Top 33%)4035(Top 310%)
25.2M25.20 mi0.35 mi14974+44837-164837-1615708(Top 55%)5919(Top 48%)5919(Top 454%)
Finish26.22 mi1.02 mi14887+874811+264811+2613473(Top 47%)4681(Top 38%)4681(Top 359%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21story building
+97ft-345ft

Overall

16969

Females

5713

F50-54

5713

5K→10K

3.1 - 6.2 mi

Top 61%
×5story building
+79ft-138ft

Overall

17324

Females

5891

F50-54

5891

10K→15K

6.2 - 9.3 mi

Top 60%
×3story building
+67ft-78ft

Overall

16969

Females

5713

F50-54

5713

15K→20K

9.3 - 12.4 mi

Top 55%
×5story building
+106ft-86ft

Overall

15681

Females

5026

F50-54

5026

20K→Half

12.4 - 13.1 mi

Top 55%
×2story building
+19ft-37ft

Overall

15659

Females

4979

F50-54

4979

Half→25K

13.1 - 15.5 mi

Top 55%
×4story building
+66ft-88ft

Overall

15577

Females

5061

F50-54

5061

25K→30K

15.5 - 18.6 mi

Top 51%
×9story building
+181ft-148ft

Overall

14362

Females

4565

F50-54

4565

30K→20M

18.6 - 20.0 mi

Top 48%
×5story building
+64ft-50ft

Overall

13651

Females

4324

F50-54

4324

20M→21M

20.0 - 21.0 mi

Top 47%
×8story building
+106ft-24ft

Overall

13340

Females

4293

F50-54

4293

21M→35K

21.0 - 21.8 mi

Top 40%
×7story building
+17ft-86ft

Overall

11378

Females

3330

F50-54

3330

35K→23M

21.8 - 23.0 mi

Top 41%
×5story building
+23ft-63ft

Overall

11768

Females

3628

F50-54

3628

23M→24M

23.0 - 24.0 mi

Top 49%
×6story building
+12ft-82ft

Overall

13789

Females

4712

F50-54

4712

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

12213

Females

4035

F50-54

4035

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

15708

Females

5919

F50-54

5919

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2story building
+22ft-21ft

Overall

13473

Females

4681

F50-54

4681

Passing Analysis

Category:
Athletes Passed
3173
Passed By
739
Net Change
+2434
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17321
5K → 10K306281+25#17321#17296
10K → 15K261157+104#17296#17192
15K → 20K44427+417#17192#16775
20K → Half829+73#16775#16702
Half → 25K25648+208#16702#16494
25K → 30K46942+427#16494#16067
30K → 20M24224+218#16067#15849
20M → 21M23229+203#15849#15646
21M → 35K1731+172#15646#15474
35K → 23M2699+260#15474#15214
23M → 24M14026+114#15214#15100
24M → 40K13917+122#15100#14978
40K → 25.2M4238+4#14978#14974
25.2M → Finish11831+87#14974#14887
TOTALS3173739+2434
📊

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