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BOSTON MARATHON 2025

Jill Welch

Bib: 18257•F

UT

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 (F40-44)
#0 / 1718
Top 48%
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
7:37/mi
23:41
↑ 97↓ 3451.5%
10K· 6.21 mi
7:47/mi
47:52
↑ 79↓ 1380.4%
15K· 9.32 mi
7:57/mi
1:12:34
↑ 67↓ 78
20K· 12.43 mi
8:11/mi
1:37:59
↑ 106↓ 860.1%
Half· 13.11 mi
8:14/mi
1:43:36
↑ 19↓ 370.5%
25K· 15.53 mi
8:13/mi
2:03:31
↑ 66↓ 880.2%
30K· 18.64 mi
8:36/mi
2:30:14
↑ 181↓ 1480.2%
20M
8:45/mi
2:42:07
↑ 64↓ 500.2%
21M
9:27/mi
2:51:34
↑ 106↓ 241.6%
35K· 21.75 mi
8:35/mi
2:57:59
↑ 17↓ 861.7%
23M
9:02/mi
3:09:18
↑ 23↓ 630.6%
24M
8:27/mi
3:17:45
↓ 821.3%
40K· 24.85 mi
8:18/mi
3:24:51
↓ 200.3%
25.2M
8:56/mi
3:27:56
↑ 13↓ 160.2%
Finish· 26.22 mi
7:51/mi
3:35:56
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:36
Pace7:54 /mi
2nd Half
Distance13.11 mi
Time1:52:20
Pace8:34 /mi
📊Positive Split: 8.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:5423:417:3723:41
7:37
-
10K
6.21 mi11:42:0547:527:4224:11
7:47
+0:10
15K
9.32 mi12:06:471:12:347:4724:42
7:57
+0:10
20K
12.43 mi12:32:121:37:597:5325:25
8:11
+0:14
Half
13.11 mi12:37:491:43:367:545:37
8:14
+0:03
25K
15.53 mi12:57:442:03:317:5719:55
8:13
-0:01
30K
18.64 mi13:24:272:30:148:0426:43
8:36
+0:23
20M
20.00 mi13:36:202:42:078:0611:53
8:45
+0:09
21M
21.00 mi13:45:472:51:348:109:27
9:27
+0:42
35K
21.75 mi13:52:122:57:598:116:25
8:35
-0:52
23M
23.00 mi14:03:313:09:188:1411:19
9:02
+0:27
24M
24.00 mi14:11:583:17:458:148:27
8:27
-0:35
40K
24.85 mi14:19:043:24:518:157:06
8:18
-0:09
25.2M
25.20 mi14:22:093:27:568:153:05
8:56
+0:38
Finish
26.22 mi14:30:093:35:568:158:00
7:51
-1:05

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

7:37 /mi

Average Pace

8:15 /mi

Slowest Pace

9:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:20:34

37% of race

Time at Steady Pace

1:06:30

31% of race

Time at Slower Pace

1:08:52

32% of race

Average Pace: 8:14 /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 mi11:17:5423:417:3723:41
7:37
#13332
10K
6.21 mi11:42:0547:527:4224:11
7:47
#13940
15K
9.32 mi12:06:471:12:347:4724:42
7:57
#14506
20K
12.43 mi12:32:121:37:597:5325:25
8:11
#14955
Half
13.11 mi12:37:491:43:367:545:37
8:14
#15124
25K
15.53 mi12:57:442:03:317:5719:55
8:13
#15168
30K
18.64 mi13:24:272:30:148:0426:43
8:36
#15214
20M
20.00 mi13:36:202:42:078:0611:53
8:45
#15186
21M
21.00 mi13:45:472:51:348:109:27
9:27
#15174
35K
21.75 mi13:52:122:57:598:116:25
8:35
#15184
23M
23.00 mi14:03:313:09:188:1411:19
9:02
#15258
24M
24.00 mi14:11:583:17:458:148:27
8:27
#15184
40K
24.85 mi14:19:043:24:518:157:06
8:18
#15051
25.2M
25.20 mi14:22:093:27:568:153:05
8:56
#14964
Finish
26.22 mi14:30:093:35:568:158:00
7:51
#14812
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi133323510351015672(Top 55%)4951(Top 40%)4951(Top 288%)
10K6.21 mi3.10 mi13940-6083903-3933903-39314674(Top 52%)4348(Top 36%)4348(Top 253%)
15K9.32 mi3.11 mi14506-5664259-3564259-35615672(Top 55%)4951(Top 40%)4951(Top 288%)
20K12.43 mi3.11 mi14955-4494557-2984557-29816186(Top 57%)5325(Top 44%)5325(Top 310%)
Half13.11 mi0.68 mi15124-1694652-954652-9517488(Top 62%)6014(Top 49%)6014(Top 350%)
25K15.53 mi2.42 mi15168-444705-534705-5315402(Top 54%)4955(Top 41%)4955(Top 288%)
30K18.64 mi3.11 mi15214-464783-784783-7815396(Top 54%)5120(Top 42%)5120(Top 298%)
20M20.00 mi1.36 mi15186+284803-204803-2015353(Top 54%)5232(Top 43%)5232(Top 305%)
21M21.00 mi1.00 mi15174+124821-184821-1815865(Top 56%)5634(Top 46%)5634(Top 328%)
35K21.75 mi0.75 mi15184-104843-224843-2215947(Top 56%)5738(Top 47%)5738(Top 334%)
23M23.00 mi1.25 mi15258-744929-864929-8616484(Top 58%)6155(Top 50%)6155(Top 358%)
24M24.00 mi1.00 mi15184+744913+164913+1614219(Top 50%)4938(Top 40%)4938(Top 287%)
40K24.85 mi0.85 mi15051+1334868+454868+4512212(Top 43%)4034(Top 33%)4034(Top 235%)
25.2M25.20 mi0.35 mi14964+874830+384830+3811563(Top 41%)3800(Top 31%)3800(Top 221%)
Finish26.22 mi1.02 mi14812+1524763+674763+6711862(Top 42%)3870(Top 32%)3870(Top 225%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21story building
+97ft-345ft

Overall

15672

Females

4951

F40-44

4951

5K→10K

3.1 - 6.2 mi

Top 52%
×5story building
+79ft-138ft

Overall

14674

Females

4348

F40-44

4348

10K→15K

6.2 - 9.3 mi

Top 55%
×3story building
+67ft-78ft

Overall

15672

Females

4951

F40-44

4951

15K→20K

9.3 - 12.4 mi

Top 57%
×5story building
+106ft-86ft

Overall

16186

Females

5325

F40-44

5325

20K→Half

12.4 - 13.1 mi

Top 62%
×2story building
+19ft-37ft

Overall

17488

Females

6014

F40-44

6014

Half→25K

13.1 - 15.5 mi

Top 54%
×4story building
+66ft-88ft

Overall

15402

Females

4955

F40-44

4955

25K→30K

15.5 - 18.6 mi

Top 54%
×9story building
+181ft-148ft

Overall

15396

Females

5120

F40-44

5120

30K→20M

18.6 - 20.0 mi

Top 54%
×5story building
+64ft-50ft

Overall

15353

Females

5232

F40-44

5232

20M→21M

20.0 - 21.0 mi

Top 56%
×8story building
+106ft-24ft

Overall

15865

Females

5634

F40-44

5634

21M→35K

21.0 - 21.8 mi

Top 56%
×7story building
+17ft-86ft

Overall

15947

Females

5738

F40-44

5738

35K→23M

21.8 - 23.0 mi

Top 58%
×5story building
+23ft-63ft

Overall

16484

Females

6155

F40-44

6155

23M→24M

23.0 - 24.0 mi

Top 50%
×6story building
+12ft-82ft

Overall

14219

Females

4938

F40-44

4938

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

12212

Females

4034

F40-44

4034

40K→25.2M

24.9 - 25.2 mi

Top 41%
×1story
+13ft-16ft

Overall

11563

Females

3800

F40-44

3800

25.2M→Finish

25.2 - 26.2 mi

Top 42%
×2story building
+22ft-21ft

Overall

11862

Females

3870

F40-44

3870

Passing Analysis

Category:
Athletes Passed
1582
Passed By
3062
Net Change
-1480
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13332
5K → 10K103711-608#13332#13940
10K → 15K70636-566#13940#14506
15K → 20K106555-449#14506#14955
20K → Half11180-169#14955#15124
Half → 25K158202-44#15124#15168
25K → 30K226272-46#15168#15214
30K → 20M129101+28#15214#15186
20M → 21M117105+12#15186#15174
21M → 35K6070-10#15174#15184
35K → 23M82156-74#15184#15258
23M → 24M11642+74#15258#15184
24M → 40K14411+133#15184#15051
40K → 25.2M925+87#15051#14964
25.2M → Finish16816+152#14964#14812
TOTALS15823062-1480
📊

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