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BOSTON MARATHON 2025

Samantha Miller

Bib: 17957•F

IL

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 29%
Gender (Female)
#0 / 12228
Top 12%
Masters (Masters Women)
#0 / 6759
Top 4%
Division (F40-44)
#0 / 1718
Top 9%
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
7:25/mi
23:02
↑ 97↓ 3451.5%
10K· 6.21 mi
7:24/mi
46:01
↑ 79↓ 1380.4%
15K· 9.32 mi
7:26/mi
1:09:07
↑ 67↓ 78
20K· 12.43 mi
7:27/mi
1:32:17
↑ 106↓ 860.1%
Half· 13.11 mi
7:15/mi
1:37:14
↑ 19↓ 370.5%
25K· 15.53 mi
7:22/mi
1:55:05
↑ 66↓ 880.2%
30K· 18.64 mi
7:33/mi
2:18:31
↑ 181↓ 1480.2%
20M
7:32/mi
2:28:45
↑ 64↓ 500.2%
21M
7:43/mi
2:36:28
↑ 106↓ 241.6%
35K· 21.75 mi
7:26/mi
2:42:02
↑ 17↓ 861.7%
23M
7:18/mi
2:51:11
↑ 23↓ 630.6%
24M
7:09/mi
2:58:20
↓ 821.3%
40K· 24.85 mi
7:19/mi
3:04:35
↓ 200.3%
25.2M
7:50/mi
3:07:17
↑ 13↓ 160.2%
Finish· 26.22 mi
6:51/mi
3:14:16
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:37:14
Pace7:25 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:37:02
Pace7:24 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:0523:027:2523:02
7:25
-
10K
6.21 mi11:36:0446:017:2422:59
7:24
-0:01
15K
9.32 mi11:59:101:09:077:2523:06
7:26
+0:02
20K
12.43 mi12:22:201:32:177:2623:10
7:27
+0:01
Half
13.11 mi12:27:171:37:147:254:57
7:15
-0:12
25K
15.53 mi12:45:081:55:057:2517:51
7:22
+0:07
30K
18.64 mi13:08:342:18:317:2623:26
7:33
+0:11
20M
20.00 mi13:18:482:28:457:2610:14
7:32
-0:01
21M
21.00 mi13:26:312:36:287:277:43
7:43
+0:11
35K
21.75 mi13:32:052:42:027:275:34
7:26
-0:17
23M
23.00 mi13:41:142:51:117:279:09
7:18
-0:08
24M
24.00 mi13:48:232:58:207:267:09
7:09
-0:09
40K
24.85 mi13:54:383:04:357:266:15
7:19
+0:10
25.2M
25.20 mi13:57:203:07:177:262:42
7:50
+0:31
Finish
26.22 mi14:04:193:14:167:256:59
6:51
-0:59

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

6:51 /mi

Average Pace

7:25 /mi

Slowest Pace

7:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:40:25

83% of race

Time at Steady Pace

33:51

17% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:25 /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 mi11:13:0523:027:2523:02
7:25
#11469
10K
6.21 mi11:36:0446:017:2422:59
7:24
#11287
15K
9.32 mi11:59:101:09:077:2523:06
7:26
#11208
20K
12.43 mi12:22:201:32:177:2623:10
7:27
#10986
Half
13.11 mi12:27:171:37:147:254:57
7:15
#10896
25K
15.53 mi12:45:081:55:057:2517:51
7:22
#10530
30K
18.64 mi13:08:342:18:317:2623:26
7:33
#9974
20M
20.00 mi13:18:482:28:457:2610:14
7:32
#9692
21M
21.00 mi13:26:312:36:287:277:43
7:43
#9413
35K
21.75 mi13:32:052:42:027:275:34
7:26
#9341
23M
23.00 mi13:41:142:51:117:279:09
7:18
#9015
24M
24.00 mi13:48:232:58:207:267:09
7:09
#8799
40K
24.85 mi13:54:383:04:357:266:15
7:19
#8602
25.2M
25.20 mi13:57:203:07:177:262:42
7:50
#8508
Finish
26.22 mi14:04:193:14:167:256:59
6:51
#8318
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi114692509250911192(Top 39%)2465(Top 20%)2465(Top 143%)
10K6.21 mi3.10 mi11287+1822441+682441+6811162(Top 39%)2395(Top 20%)2395(Top 139%)
15K9.32 mi3.11 mi11208+792418+232418+2311192(Top 39%)2465(Top 20%)2465(Top 143%)
20K12.43 mi3.11 mi10986+2222330+882330+8810388(Top 37%)2139(Top 17%)2139(Top 125%)
Half13.11 mi0.68 mi10896+902288+422288+429641(Top 34%)1769(Top 14%)1769(Top 103%)
25K15.53 mi2.42 mi10530+3662146+1422146+1428850(Top 31%)1573(Top 13%)1573(Top 92%)
30K18.64 mi3.11 mi9974+5561943+2031943+2038054(Top 28%)1411(Top 12%)1411(Top 82%)
20M20.00 mi1.36 mi9692+2821854+891854+897240(Top 25%)1242(Top 10%)1242(Top 72%)
21M21.00 mi1.00 mi9413+2791760+941760+945782(Top 20%)857(Top 7%)857(Top 50%)
35K21.75 mi0.75 mi9341+721747+131747+138246(Top 29%)1774(Top 15%)1774(Top 103%)
23M23.00 mi1.25 mi9015+3261647+1001647+1005540(Top 20%)839(Top 7%)839(Top 49%)
24M24.00 mi1.00 mi8799+2161590+571590+575559(Top 20%)917(Top 7%)917(Top 53%)
40K24.85 mi0.85 mi8602+1971546+441546+445739(Top 20%)1036(Top 8%)1036(Top 60%)
25.2M25.20 mi0.35 mi8508+941526+201526+205131(Top 18%)929(Top 8%)929(Top 54%)
Finish26.22 mi1.02 mi8318+1901480+461480+464846(Top 17%)817(Top 7%)817(Top 48%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21story building
+97ft-345ft

Overall

11192

Females

2465

F40-44

2465

5K→10K

3.1 - 6.2 mi

Top 39%
×5story building
+79ft-138ft

Overall

11162

Females

2395

F40-44

2395

10K→15K

6.2 - 9.3 mi

Top 39%
×3story building
+67ft-78ft

Overall

11192

Females

2465

F40-44

2465

15K→20K

9.3 - 12.4 mi

Top 37%
×5story building
+106ft-86ft

Overall

10388

Females

2139

F40-44

2139

20K→Half

12.4 - 13.1 mi

Top 34%
×2story building
+19ft-37ft

Overall

9641

Females

1769

F40-44

1769

Half→25K

13.1 - 15.5 mi

Top 31%
×4story building
+66ft-88ft

Overall

8850

Females

1573

F40-44

1573

25K→30K

15.5 - 18.6 mi

Top 28%
×9story building
+181ft-148ft

Overall

8054

Females

1411

F40-44

1411

30K→20M

18.6 - 20.0 mi

Top 25%
×5story building
+64ft-50ft

Overall

7240

Females

1242

F40-44

1242

20M→21M

20.0 - 21.0 mi

Top 20%
×8story building
+106ft-24ft

Overall

5782

Females

857

F40-44

857

21M→35K

21.0 - 21.8 mi

Top 29%
×7story building
+17ft-86ft

Overall

8246

Females

1774

F40-44

1774

35K→23M

21.8 - 23.0 mi

Top 20%
×5story building
+23ft-63ft

Overall

5540

Females

839

F40-44

839

23M→24M

23.0 - 24.0 mi

Top 20%
×6story building
+12ft-82ft

Overall

5559

Females

917

F40-44

917

24M→40K

24.0 - 24.9 mi

Top 20%
×1story
+6ft-20ft

Overall

5739

Females

1036

F40-44

1036

40K→25.2M

24.9 - 25.2 mi

Top 18%
×1story
+13ft-16ft

Overall

5131

Females

929

F40-44

929

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2story building
+22ft-21ft

Overall

4846

Females

817

F40-44

817

Passing Analysis

Category:
Athletes Passed
3625*
Passed By
473
Net Change
+3151
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11469
5K → 10K354172+182#11469#11287
10K → 15K230151+79#11287#11208
15K → 20K28563+222#11208#10986
20K → Half944+90#10986#10896
Half → 25K37812+366#10896#10530
25K → 30K571*15+556#10530#9974
30K → 20M29411+282#9974#9692
20M → 21M2812+279#9692#9413
21M → 35K9321+72#9413#9341
35K → 23M3282+326#9341#9015
23M → 24M2204+216#9015#8799
24M → 40K2047+197#8799#8602
40K → 25.2M973+94#8602#8508
25.2M → Finish1966+190#8508#8318
TOTALS3625*473+3151

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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