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BOSTON MARATHON 2025

Susan Miller

Bib: 21529•F

OH

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 39%
Division (F45-49)
#0 / 1813
Top 49%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:09/mi
25:20
↑ 97↓ 3451.5%
10K· 6.21 mi
8:06/mi
50:31
↑ 79↓ 1380.4%
15K· 9.32 mi
8:12/mi
1:16:01
↑ 67↓ 78
20K· 12.43 mi
8:12/mi
1:41:31
↑ 106↓ 860.1%
Half· 13.11 mi
8:08/mi
1:47:04
↑ 19↓ 370.5%
25K· 15.53 mi
8:18/mi
2:07:11
↑ 66↓ 880.2%
30K· 18.64 mi
8:50/mi
2:34:37
↑ 181↓ 1480.2%
20M
9:08/mi
2:47:02
↑ 64↓ 500.2%
21M
9:36/mi
2:56:38
↑ 106↓ 241.6%
35K· 21.75 mi
9:33/mi
3:03:47
↑ 17↓ 861.7%
23M
9:53/mi
3:16:09
↑ 23↓ 630.6%
24M
8:58/mi
3:25:07
↓ 821.3%
40K· 24.85 mi
9:10/mi
3:32:57
↓ 200.3%
25.2M
10:00/mi
3:36:24
↑ 13↓ 160.2%
Finish· 26.22 mi
8:43/mi
3:45:17
↑ 22↓ 21

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
Time1:58:13
Pace9:01 /mi
📊Positive Split: 10.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:0125:208:0925:20
8:09
-
10K
6.21 mi11:46:1250:318:0825:11
8:06
-0:03
15K
9.32 mi12:11:421:16:018:0925:30
8:12
+0:06
20K
12.43 mi12:37:121:41:318:1025:30
8:12
0:00
Half
13.11 mi12:42:451:47:048:105:33
8:08
-0:04
25K
15.53 mi13:02:522:07:118:1120:07
8:18
+0:10
30K
18.64 mi13:30:182:34:378:1827:26
8:50
+0:32
20M
20.00 mi13:42:432:47:028:2112:25
9:08
+0:18
21M
21.00 mi13:52:192:56:388:259:36
9:36
+0:28
35K
21.75 mi13:59:283:03:478:277:09
9:33
-0:03
23M
23.00 mi14:11:503:16:098:3212:22
9:53
+0:20
24M
24.00 mi14:20:483:25:078:338:58
8:58
-0:55
40K
24.85 mi14:28:383:32:578:347:50
9:10
+0:12
25.2M
25.20 mi14:32:053:36:248:353:27
10:00
+0:50
Finish
26.22 mi14:40:583:45:178:368:53
8:43
-1:17

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

8:06 /mi

Average Pace

8:36 /mi

Slowest Pace

10:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:07:11

56% of race

Time at Steady Pace

57:42

26% of race

Time at Slower Pace

40:24

18% of race

Average Pace: 8:36 /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 mi11:21:0125:208:0925:20
8:09
#17795
10K
6.21 mi11:46:1250:318:0825:11
8:06
#17494
15K
9.32 mi12:11:421:16:018:0925:30
8:12
#17460
20K
12.43 mi12:37:121:41:318:1025:30
8:12
#17146
Half
13.11 mi12:42:451:47:048:105:33
8:08
#17117
25K
15.53 mi13:02:522:07:118:1120:07
8:18
#16878
30K
18.64 mi13:30:182:34:378:1827:26
8:50
#16806
20M
20.00 mi13:42:432:47:028:2112:25
9:08
#16835
21M
21.00 mi13:52:192:56:388:259:36
9:36
#16779
35K
21.75 mi13:59:283:03:478:277:09
9:33
#16945
23M
23.00 mi14:11:503:16:098:3212:22
9:53
#17215
24M
24.00 mi14:20:483:25:078:338:58
8:58
#17198
40K
24.85 mi14:28:383:32:578:347:50
9:10
#17193
25.2M
25.20 mi14:32:053:36:248:353:27
10:00
#17196
Finish
26.22 mi14:40:583:45:178:368:53
8:43
#17214
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi177956216621617445(Top 61%)5982(Top 49%)5982(Top 330%)
10K6.21 mi3.10 mi17494+3016031+1856031+18517253(Top 61%)5857(Top 48%)5857(Top 323%)
15K9.32 mi3.11 mi17460+345985+465985+4617445(Top 61%)5982(Top 49%)5982(Top 330%)
20K12.43 mi3.11 mi17146+3145827+1585827+15816361(Top 58%)5419(Top 44%)5419(Top 299%)
Half13.11 mi0.68 mi17117+295818+95818+916928(Top 60%)5731(Top 47%)5731(Top 316%)
25K15.53 mi2.42 mi16878+2395690+1285690+12815921(Top 56%)5272(Top 43%)5272(Top 291%)
30K18.64 mi3.11 mi16806+725701-115701-1116788(Top 59%)5915(Top 48%)5915(Top 326%)
20M20.00 mi1.36 mi16835-295739-385739-3817489(Top 62%)6411(Top 52%)6411(Top 354%)
21M21.00 mi1.00 mi16779+565747-85747-816571(Top 58%)6017(Top 49%)6017(Top 332%)
35K21.75 mi0.75 mi16945-1665864-1175864-11720531(Top 72%)8249(Top 67%)8249(Top 455%)
23M23.00 mi1.25 mi17215-2706063-1996063-19920075(Top 71%)8087(Top 66%)8087(Top 446%)
24M24.00 mi1.00 mi17198+176075-126075-1217205(Top 61%)6594(Top 54%)6594(Top 364%)
40K24.85 mi0.85 mi17193+56100-256100-2517186(Top 61%)6681(Top 55%)6681(Top 369%)
25.2M25.20 mi0.35 mi17196-36111-116111-1117097(Top 60%)6635(Top 54%)6635(Top 366%)
Finish26.22 mi1.02 mi17214-186135-246135-2417602(Top 62%)6870(Top 56%)6870(Top 379%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21story building
+97ft-345ft

Overall

17445

Females

5982

F45-49

5982

5K→10K

3.1 - 6.2 mi

Top 61%
×5story building
+79ft-138ft

Overall

17253

Females

5857

F45-49

5857

10K→15K

6.2 - 9.3 mi

Top 61%
×3story building
+67ft-78ft

Overall

17445

Females

5982

F45-49

5982

15K→20K

9.3 - 12.4 mi

Top 58%
×5story building
+106ft-86ft

Overall

16361

Females

5419

F45-49

5419

20K→Half

12.4 - 13.1 mi

Top 60%
×2story building
+19ft-37ft

Overall

16928

Females

5731

F45-49

5731

Half→25K

13.1 - 15.5 mi

Top 56%
×4story building
+66ft-88ft

Overall

15921

Females

5272

F45-49

5272

25K→30K

15.5 - 18.6 mi

Top 59%
×9story building
+181ft-148ft

Overall

16788

Females

5915

F45-49

5915

30K→20M

18.6 - 20.0 mi

Top 62%
×5story building
+64ft-50ft

Overall

17489

Females

6411

F45-49

6411

20M→21M

20.0 - 21.0 mi

Top 58%
×8story building
+106ft-24ft

Overall

16571

Females

6017

F45-49

6017

21M→35K

21.0 - 21.8 mi

Top 72%
×7story building
+17ft-86ft

Overall

20531

Females

8249

F45-49

8249

35K→23M

21.8 - 23.0 mi

Top 71%
×5story building
+23ft-63ft

Overall

20075

Females

8087

F45-49

8087

23M→24M

23.0 - 24.0 mi

Top 61%
×6story building
+12ft-82ft

Overall

17205

Females

6594

F45-49

6594

24M→40K

24.0 - 24.9 mi

Top 61%
×1story
+6ft-20ft

Overall

17186

Females

6681

F45-49

6681

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

17097

Females

6635

F45-49

6635

25.2M→Finish

25.2 - 26.2 mi

Top 62%
×2story building
+22ft-21ft

Overall

17602

Females

6870

F45-49

6870

Passing Analysis

Category:
Athletes Passed
2183
Passed By
1602
Net Change
+581
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17795
5K → 10K463162+301#17795#17494
10K → 15K226192+34#17494#17460
15K → 20K35541+314#17460#17146
20K → Half4617+29#17146#17117
Half → 25K27637+239#17117#16878
25K → 30K257185+72#16878#16806
30K → 20M88117-29#16806#16835
20M → 21M13680+56#16835#16779
21M → 35K25191-166#16779#16945
35K → 23M59329-270#16945#17215
23M → 24M9174+17#17215#17198
24M → 40K6560+5#17198#17193
40K → 25.2M3538-3#17193#17196
25.2M → Finish6179-18#17196#17214
TOTALS21831602+581
📊

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