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BOSTON MARATHON 2025

Gillian Viers

Bib: 23574•F

CA

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:53
Rank: #22323
Start → 5K
27:53 | 8:58/mi
10K· 6.21 mi
56:56
Rank: #23075 (-752)
5K → 10K
29:03 | 9:21/mi
15K· 9.32 mi
1:26:02
Rank: #23222 (-147)
10K → 15K
29:06 | 9:22/mi
20K· 12.43 mi
1:55:28
Rank: #23112 (+110)
15K → 20K
29:26 | 9:28/mi
Half· 13.11 mi
2:01:37
Rank: #23062 (+50)
20K → Half
6:09 | 9:01/mi
25K· 15.53 mi
2:24:43
Rank: #22845 (+217)
Half → 25K
23:06 | 9:32/mi
30K· 18.64 mi
2:56:13
Rank: #22664 (+181)
25K → 30K
31:30 | 10:08/mi
20M
3:09:55
Rank: #22541 (+123)
30K → 20M
13:42 | 10:05/mi
21M
3:21:40
Rank: #22573 (-32)
20M → 21M
11:45 | 11:45/mi
35K· 21.75 mi
3:28:51
Rank: #22496 (+77)
21M → 35K
7:11 | 9:36/mi
23M
3:41:32
Rank: #22395 (+101)
35K → 23M
12:41 | 10:08/mi
24M
3:51:40
Rank: #22359 (+36)
23M → 24M
10:08 | 10:08/mi
40K· 24.85 mi
4:00:51
Rank: #22348 (+11)
24M → 40K
9:11 | 10:44/mi
25.2M
4:04:36
Rank: #22311 (+37)
40K → 25.2M
3:45 | 10:52/mi
Finish· 26.22 mi
4:15:12
Rank: #22373 (-62)
25.2M → Finish
10:36 | 10:24/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:01:37
Pace9:17 /mi
2nd Half
Distance13.11 mi
Time2:13:35
Pace10:11 /mi
📊Positive Split: 9.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:25:0627:538:5827:53
8:58
-
10K
6.21 mi11:54:0956:569:1029:03
9:21
+0:23
15K
9.32 mi12:23:151:26:029:1429:06
9:22
+0:01
20K
12.43 mi12:52:411:55:289:1729:26
9:28
+0:06
Half
13.11 mi12:58:502:01:379:176:09
9:01
-0:27
25K
15.53 mi13:21:562:24:439:1923:06
9:32
+0:31
30K
18.64 mi13:53:262:56:139:2731:30
10:08
+0:36
20M
20.00 mi14:07:083:09:559:3013:42
10:05
-0:03
21M
21.00 mi14:18:533:21:409:3611:45
11:45
+1:40
35K
21.75 mi14:26:043:28:519:367:11
9:36
-2:09
23M
23.00 mi14:38:453:41:329:3812:41
10:08
+0:32
24M
24.00 mi14:48:533:51:409:3910:08
10:08
0:00
40K
24.85 mi14:58:044:00:519:419:11
10:44
+0:36
25.2M
25.20 mi15:01:494:04:369:423:45
10:52
+0:08
Finish
26.22 mi15:12:254:15:129:4410:36
10:24
-0:28

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

8:58 /mi

Average Pace

9:44 /mi

Slowest Pace

11:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:31:54

60% of race

Time at Steady Pace

1:18:37

31% of race

Time at Slower Pace

24:41

10% of race

Average Pace: 9:44 /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 mi11:25:0627:538:5827:53
8:58
#22323
10K
6.21 mi11:54:0956:569:1029:03
9:21
#23075
15K
9.32 mi12:23:151:26:029:1429:06
9:22
#23222
20K
12.43 mi12:52:411:55:289:1729:26
9:28
#23112
Half
13.11 mi12:58:502:01:379:176:09
9:01
#23062
25K
15.53 mi13:21:562:24:439:1923:06
9:32
#22845
30K
18.64 mi13:53:262:56:139:2731:30
10:08
#22664
20M
20.00 mi14:07:083:09:559:3013:42
10:05
#22541
21M
21.00 mi14:18:533:21:409:3611:45
11:45
#22573
35K
21.75 mi14:26:043:28:519:367:11
9:36
#22496
23M
23.00 mi14:38:453:41:329:3812:41
10:08
#22395
24M
24.00 mi14:48:533:51:409:3910:08
10:08
#22359
40K
24.85 mi14:58:044:00:519:419:11
10:44
#22348
25.2M
25.20 mi15:01:494:04:369:423:45
10:52
#22311
Finish
26.22 mi15:12:254:15:129:4410:36
10:24
#22373
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi223238813881323391(Top 82%)9313(Top 76%)9313(Top 715%)
10K6.21 mi3.10 mi23075-7529190-3779190-37723689(Top 83%)9513(Top 78%)9513(Top 730%)
15K9.32 mi3.11 mi23222-1479252-629252-6223391(Top 82%)9313(Top 76%)9313(Top 715%)
20K12.43 mi3.11 mi23112+1109190+629190+6222820(Top 80%)9045(Top 74%)9045(Top 694%)
Half13.11 mi0.68 mi23062+509162+289162+2821932(Top 77%)8568(Top 70%)8568(Top 658%)
25K15.53 mi2.42 mi22845+2179059+1039059+10321959(Top 77%)8629(Top 71%)8629(Top 662%)
30K18.64 mi3.11 mi22664+1819001+589001+5822028(Top 78%)8790(Top 72%)8790(Top 675%)
20M20.00 mi1.36 mi22541+1238956+458956+4521235(Top 75%)8492(Top 69%)8492(Top 652%)
21M21.00 mi1.00 mi22573-328987-318987-3123130(Top 81%)9557(Top 78%)9557(Top 733%)
35K21.75 mi0.75 mi22496+778963+248963+2420716(Top 73%)8362(Top 68%)8362(Top 642%)
23M23.00 mi1.25 mi22395+1018937+268937+2620911(Top 74%)8508(Top 70%)8508(Top 653%)
24M24.00 mi1.00 mi22359+368937893721763(Top 77%)9012(Top 74%)9012(Top 692%)
40K24.85 mi0.85 mi22348+118950-138950-1322559(Top 79%)9482(Top 78%)9482(Top 728%)
25.2M25.20 mi0.35 mi22311+378936+148936+1420301(Top 71%)8321(Top 68%)8321(Top 639%)
Finish26.22 mi1.02 mi22373-628983-478983-4724060(Top 85%)10195(Top 83%)10195(Top 782%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21stories
+97ft-345ft

Overall

23391

Females

9313

F50-54

9313

5K→10K

3.1 - 6.2 mi

Top 83%
×5stories
+79ft-138ft

Overall

23689

Females

9513

F50-54

9513

10K→15K

6.2 - 9.3 mi

Top 82%
×3stories
+67ft-78ft

Overall

23391

Females

9313

F50-54

9313

15K→20K

9.3 - 12.4 mi

Top 80%
×5stories
+106ft-86ft

Overall

22820

Females

9045

F50-54

9045

20K→Half

12.4 - 13.1 mi

Top 77%
×2stories
+19ft-37ft

Overall

21932

Females

8568

F50-54

8568

Half→25K

13.1 - 15.5 mi

Top 77%
×4stories
+66ft-88ft

Overall

21959

Females

8629

F50-54

8629

25K→30K

15.5 - 18.6 mi

Top 78%
×9stories
+181ft-148ft

Overall

22028

Females

8790

F50-54

8790

30K→20M

18.6 - 20.0 mi

Top 75%
×5stories
+64ft-50ft

Overall

21235

Females

8492

F50-54

8492

20M→21M

20.0 - 21.0 mi

Top 81%
×8stories
+106ft-24ft

Overall

23130

Females

9557

F50-54

9557

21M→35K

21.0 - 21.8 mi

Top 73%
×7stories
+17ft-86ft

Overall

20716

Females

8362

F50-54

8362

35K→23M

21.8 - 23.0 mi

Top 74%
×5stories
+23ft-63ft

Overall

20911

Females

8508

F50-54

8508

23M→24M

23.0 - 24.0 mi

Top 77%
×6stories
+12ft-82ft

Overall

21763

Females

9012

F50-54

9012

24M→40K

24.0 - 24.9 mi

Top 79%
×1story
+6ft-20ft

Overall

22559

Females

9482

F50-54

9482

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

20301

Females

8321

F50-54

8321

25.2M→Finish

25.2 - 26.2 mi

Top 85%
×2stories
+22ft-21ft

Overall

24060

Females

10195

F50-54

10195

Passing Analysis

Category:
Athletes Passed
1542
Passed By
1592
Net Change
-50
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22323
5K → 10K56808-752#22323#23075
10K → 15K124271-147#23075#23222
15K → 20K20797+110#23222#23112
20K → Half566+50#23112#23062
Half → 25K25235+217#23062#22845
25K → 30K25372+181#22845#22664
30K → 20M14926+123#22664#22541
20M → 21M5890-32#22541#22573
21M → 35K8912+77#22573#22496
35K → 23M11918+101#22496#22395
23M → 24M7236+36#22395#22359
24M → 40K4736+11#22359#22348
40K → 25.2M403+37#22348#22311
25.2M → Finish2082-62#22311#22373
TOTALS15421592-50
📊

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