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BOSTON MARATHON 2025

Susan Millward

Bib: 21291•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 43%
Masters (Masters Women)
#0 / 6759
Top 29%
Division (F50-54)
#0 / 1303
Top 22%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:01
Rank: #19159
Start → 5K
26:01 | 8:22/mi
10K· 6.21 mi
51:47
Rank: #18827 (+332)
5K → 10K
25:46 | 8:18/mi
15K· 9.32 mi
1:17:21
Rank: #18389 (+438)
10K → 15K
25:34 | 8:14/mi
20K· 12.43 mi
1:43:21
Rank: #18096 (+293)
15K → 20K
26:00 | 8:22/mi
Half· 13.11 mi
1:48:54
Rank: #18023 (+73)
20K → Half
5:33 | 8:08/mi
25K· 15.53 mi
2:09:01
Rank: #17614 (+409)
Half → 25K
20:07 | 8:18/mi
30K· 18.64 mi
2:35:29
Rank: #17088 (+526)
25K → 30K
26:28 | 8:31/mi
20M
2:47:06
Rank: #16848 (+240)
30K → 20M
11:37 | 8:33/mi
21M
2:56:05
Rank: #16610 (+238)
20M → 21M
8:59 | 8:59/mi
35K· 21.75 mi
3:02:04
Rank: #16426 (+184)
21M → 35K
5:59 | 8:00/mi
23M
3:12:29
Rank: #16134 (+292)
35K → 23M
10:25 | 8:19/mi
24M
3:20:41
Rank: #15982 (+152)
23M → 24M
8:12 | 8:12/mi
40K· 24.85 mi
3:27:43
Rank: #15801 (+181)
24M → 40K
7:02 | 8:14/mi
25.2M
3:30:51
Rank: #15721 (+80)
40K → 25.2M
3:08 | 9:05/mi
Finish· 26.22 mi
3:39:02
Rank: #15622 (+99)
25.2M → Finish
8:11 | 8:02/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:54
Pace8:18 /mi
2nd Half
Distance13.11 mi
Time1:50:08
Pace8:24 /mi
📊Positive Split: 1.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:1726:018:2226:01
8:22
-
10K
6.21 mi11:46:0351:478:2025:46
8:18
-0:04
15K
9.32 mi12:11:371:17:218:1825:34
8:14
-0:04
20K
12.43 mi12:37:371:43:218:1926:00
8:22
+0:08
Half
13.11 mi12:43:101:48:548:185:33
8:08
-0:14
25K
15.53 mi13:03:172:09:018:1820:07
8:18
+0:10
30K
18.64 mi13:29:452:35:298:2026:28
8:31
+0:13
20M
20.00 mi13:41:222:47:068:2111:37
8:33
+0:02
21M
21.00 mi13:50:212:56:058:238:59
8:59
+0:26
35K
21.75 mi13:56:203:02:048:225:59
8:00
-0:59
23M
23.00 mi14:06:453:12:298:2210:25
8:19
+0:19
24M
24.00 mi14:14:573:20:418:228:12
8:12
-0:07
40K
24.85 mi14:21:593:27:438:217:02
8:14
+0:02
25.2M
25.20 mi14:25:073:30:518:223:08
9:05
+0:51
Finish
26.22 mi14:33:183:39:028:228:11
8:02
-1:03

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

8:00 /mi

Average Pace

8:22 /mi

Slowest Pace

9:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:26:55

94% of race

Time at Steady Pace

12:07

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:21 /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 mi11:20:1726:018:2226:01
8:22
#19159
10K
6.21 mi11:46:0351:478:2025:46
8:18
#18827
15K
9.32 mi12:11:371:17:218:1825:34
8:14
#18389
20K
12.43 mi12:37:371:43:218:1926:00
8:22
#18096
Half
13.11 mi12:43:101:48:548:185:33
8:08
#18023
25K
15.53 mi13:03:172:09:018:1820:07
8:18
#17614
30K
18.64 mi13:29:452:35:298:2026:28
8:31
#17088
20M
20.00 mi13:41:222:47:068:2111:37
8:33
#16848
21M
21.00 mi13:50:212:56:058:238:59
8:59
#16610
35K
21.75 mi13:56:203:02:048:225:59
8:00
#16426
23M
23.00 mi14:06:453:12:298:2210:25
8:19
#16134
24M
24.00 mi14:14:573:20:418:228:12
8:12
#15982
40K
24.85 mi14:21:593:27:438:217:02
8:14
#15801
25.2M
25.20 mi14:25:073:30:518:223:08
9:05
#15721
Finish
26.22 mi14:33:183:39:028:228:11
8:02
#15622
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi191596993699317585(Top 62%)6065(Top 50%)6065(Top 465%)
10K6.21 mi3.10 mi18827+3326808+1856808+18518508(Top 65%)6601(Top 54%)6601(Top 507%)
15K9.32 mi3.11 mi18389+4386559+2496559+24917585(Top 62%)6065(Top 50%)6065(Top 465%)
20K12.43 mi3.11 mi18096+2936392+1676392+16717352(Top 61%)5974(Top 49%)5974(Top 458%)
Half13.11 mi0.68 mi18023+736351+416351+4116889(Top 59%)5692(Top 47%)5692(Top 437%)
25K15.53 mi2.42 mi17614+4096123+2286123+22815910(Top 56%)5261(Top 43%)5261(Top 404%)
30K18.64 mi3.11 mi17088+5265871+2525871+25214887(Top 52%)4845(Top 40%)4845(Top 372%)
20M20.00 mi1.36 mi16848+2405747+1245747+12414117(Top 50%)4581(Top 37%)4581(Top 352%)
21M21.00 mi1.00 mi16610+2385642+1055642+10513437(Top 47%)4343(Top 36%)4343(Top 333%)
35K21.75 mi0.75 mi16426+1845557+855557+8512316(Top 43%)3823(Top 31%)3823(Top 293%)
23M23.00 mi1.25 mi16134+2925432+1255432+12512197(Top 43%)3854(Top 32%)3854(Top 296%)
24M24.00 mi1.00 mi15982+1525372+605372+6012617(Top 44%)4128(Top 34%)4128(Top 317%)
40K24.85 mi0.85 mi15801+1815291+815291+8111772(Top 41%)3807(Top 31%)3807(Top 292%)
25.2M25.20 mi0.35 mi15721+805261+305261+3012395(Top 44%)4194(Top 34%)4194(Top 322%)
Finish26.22 mi1.02 mi15622+995225+365225+3613122(Top 46%)4510(Top 37%)4510(Top 346%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21stories
+97ft-345ft

Overall

17585

Females

6065

F50-54

6065

5K→10K

3.1 - 6.2 mi

Top 65%
×5stories
+79ft-138ft

Overall

18508

Females

6601

F50-54

6601

10K→15K

6.2 - 9.3 mi

Top 62%
×3stories
+67ft-78ft

Overall

17585

Females

6065

F50-54

6065

15K→20K

9.3 - 12.4 mi

Top 61%
×5stories
+106ft-86ft

Overall

17352

Females

5974

F50-54

5974

20K→Half

12.4 - 13.1 mi

Top 59%
×2stories
+19ft-37ft

Overall

16889

Females

5692

F50-54

5692

Half→25K

13.1 - 15.5 mi

Top 56%
×4stories
+66ft-88ft

Overall

15910

Females

5261

F50-54

5261

25K→30K

15.5 - 18.6 mi

Top 52%
×9stories
+181ft-148ft

Overall

14887

Females

4845

F50-54

4845

30K→20M

18.6 - 20.0 mi

Top 50%
×5stories
+64ft-50ft

Overall

14117

Females

4581

F50-54

4581

20M→21M

20.0 - 21.0 mi

Top 47%
×8stories
+106ft-24ft

Overall

13437

Females

4343

F50-54

4343

21M→35K

21.0 - 21.8 mi

Top 43%
×7stories
+17ft-86ft

Overall

12316

Females

3823

F50-54

3823

35K→23M

21.8 - 23.0 mi

Top 43%
×5stories
+23ft-63ft

Overall

12197

Females

3854

F50-54

3854

23M→24M

23.0 - 24.0 mi

Top 44%
×6stories
+12ft-82ft

Overall

12617

Females

4128

F50-54

4128

24M→40K

24.0 - 24.9 mi

Top 41%
×1story
+6ft-20ft

Overall

11772

Females

3807

F50-54

3807

40K→25.2M

24.9 - 25.2 mi

Top 44%
×1story
+13ft-16ft

Overall

12395

Females

4194

F50-54

4194

25.2M→Finish

25.2 - 26.2 mi

Top 46%
×2stories
+22ft-21ft

Overall

13122

Females

4510

F50-54

4510

Passing Analysis

Category:
Athletes Passed
3869
Passed By
332
Net Change
+3537
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19159
5K → 10K459127+332#19159#18827
10K → 15K48648+438#18827#18389
15K → 20K35057+293#18389#18096
20K → Half796+73#18096#18023
Half → 25K42213+409#18023#17614
25K → 30K54620+526#17614#17088
30K → 20M2466+240#17088#16848
20M → 21M25315+238#16848#16610
21M → 35K1840+184#16610#16426
35K → 23M2953+292#16426#16134
23M → 24M16210+152#16134#15982
24M → 40K1865+181#15982#15801
40K → 25.2M866+80#15801#15721
25.2M → Finish11516+99#15721#15622
TOTALS3869332+3537
📊

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