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BOSTON MARATHON 2025

Gwen Li

Bib: 15608•F

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 43%
Gender (Female)
#0 / 12228
Top 27%
Masters (Masters Women)
#0 / 6759
Top 13%
Division (F50-54)
#0 / 1303
Top 7%
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
7:33/mi
23:27
↑ 97↓ 3451.5%
10K· 6.21 mi
7:22/mi
46:21
↑ 79↓ 1380.4%
15K· 9.32 mi
7:21/mi
1:09:10
↑ 67↓ 78
20K· 12.43 mi
7:27/mi
1:32:20
↑ 106↓ 860.1%
Half· 13.11 mi
7:15/mi
1:37:17
↑ 19↓ 370.5%
25K· 15.53 mi
7:39/mi
1:55:49
↑ 66↓ 880.2%
30K· 18.64 mi
8:22/mi
2:21:50
↑ 181↓ 1480.2%
20M
8:21/mi
2:33:11
↑ 64↓ 500.2%
21M
9:15/mi
2:42:26
↑ 106↓ 241.6%
35K· 21.75 mi
7:53/mi
2:48:20
↑ 17↓ 861.7%
23M
8:34/mi
2:59:03
↑ 23↓ 630.6%
24M
8:23/mi
3:07:26
↓ 821.3%
40K· 24.85 mi
8:26/mi
3:14:39
↓ 200.3%
25.2M
9:23/mi
3:17:53
↑ 13↓ 160.2%
Finish· 26.22 mi
8:39/mi
3:26:42
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:17
Pace7:25 /mi
2nd Half
Distance13.11 mi
Time1:49:25
Pace8:21 /mi
📊Positive Split: 12.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:5523:277:3323:27
7:33
-
10K
6.21 mi11:17:4946:217:2822:54
7:22
-0:11
15K
9.32 mi11:40:381:09:107:2522:49
7:21
-0:01
20K
12.43 mi12:03:481:32:207:2623:10
7:27
+0:06
Half
13.11 mi12:08:451:37:177:254:57
7:15
-0:12
25K
15.53 mi12:27:171:55:497:2718:32
7:39
+0:24
30K
18.64 mi12:53:182:21:507:3726:01
8:22
+0:43
20M
20.00 mi13:04:392:33:117:4011:21
8:21
-0:01
21M
21.00 mi13:13:542:42:267:449:15
9:15
+0:54
35K
21.75 mi13:19:482:48:207:445:54
7:53
-1:22
23M
23.00 mi13:30:312:59:037:4710:43
8:34
+0:41
24M
24.00 mi13:38:543:07:267:498:23
8:23
-0:11
40K
24.85 mi13:46:073:14:397:507:13
8:26
+0:03
25.2M
25.20 mi13:49:213:17:537:513:14
9:23
+0:57
Finish
26.22 mi13:58:103:26:427:538:49
8:39
-0:44

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

7:15 /mi

Average Pace

7:53 /mi

Slowest Pace

9:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:01:43

59% of race

Time at Steady Pace

1:12:30

35% of race

Time at Slower Pace

12:29

6% of race

Average Pace: 7:53 /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 mi10:54:5523:277:3323:27
7:33
#12663
10K
6.21 mi11:17:4946:217:2822:54
7:22
#11783
15K
9.32 mi11:40:381:09:107:2522:49
7:21
#11268
20K
12.43 mi12:03:481:32:207:2623:10
7:27
#11021
Half
13.11 mi12:08:451:37:177:254:57
7:15
#10940
25K
15.53 mi12:27:171:55:497:2718:32
7:39
#10947
30K
18.64 mi12:53:182:21:507:3726:01
8:22
#11495
20M
20.00 mi13:04:392:33:117:4011:21
8:21
#11546
21M
21.00 mi13:13:542:42:267:449:15
9:15
#11773
35K
21.75 mi13:19:482:48:207:445:54
7:53
#11742
23M
23.00 mi13:30:312:59:037:4710:43
8:34
#11851
24M
24.00 mi13:38:543:07:267:498:23
8:23
#11923
40K
24.85 mi13:46:073:14:397:507:13
8:26
#11957
25.2M
25.20 mi13:49:213:17:537:513:14
9:23
#11973
Finish
26.22 mi13:58:103:26:427:538:49
8:39
#12189
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi126633143314310375(Top 37%)2067(Top 17%)2067(Top 159%)
10K6.21 mi3.10 mi11783+8802693+4502693+45010943(Top 39%)2284(Top 19%)2284(Top 175%)
15K9.32 mi3.11 mi11268+5152458+2352458+23510375(Top 37%)2067(Top 17%)2067(Top 159%)
20K12.43 mi3.11 mi11021+2472351+1072351+10710415(Top 37%)2166(Top 18%)2166(Top 166%)
Half13.11 mi0.68 mi10940+812313+382313+389710(Top 34%)1838(Top 15%)1838(Top 141%)
25K15.53 mi2.42 mi10947-72362-492362-4911117(Top 39%)2650(Top 22%)2650(Top 203%)
30K18.64 mi3.11 mi11495-5482731-3692731-36913980(Top 49%)4349(Top 36%)4349(Top 334%)
20M20.00 mi1.36 mi11546-512799-682799-6812858(Top 45%)3887(Top 32%)3887(Top 298%)
21M21.00 mi1.00 mi11773-2272951-1522951-15214894(Top 52%)5110(Top 42%)5110(Top 392%)
35K21.75 mi0.75 mi11742+312952-12952-111499(Top 40%)3371(Top 28%)3371(Top 259%)
23M23.00 mi1.25 mi11851-1093063-1113063-11113675(Top 48%)4626(Top 38%)4626(Top 355%)
24M24.00 mi1.00 mi11923-723132-693132-6913771(Top 48%)4694(Top 38%)4694(Top 360%)
40K24.85 mi0.85 mi11957-343196-643196-6413054(Top 46%)4465(Top 37%)4465(Top 343%)
25.2M25.20 mi0.35 mi11973-163210-143210-1413902(Top 49%)4945(Top 40%)4945(Top 380%)
Finish26.22 mi1.02 mi12189-2163348-1383348-13817185(Top 61%)6647(Top 54%)6647(Top 510%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 37%
×21story building
+97ft-345ft

Overall

10375

Females

2067

F50-54

2067

5K→10K

3.1 - 6.2 mi

Top 39%
×5story building
+79ft-138ft

Overall

10943

Females

2284

F50-54

2284

10K→15K

6.2 - 9.3 mi

Top 37%
×3story building
+67ft-78ft

Overall

10375

Females

2067

F50-54

2067

15K→20K

9.3 - 12.4 mi

Top 37%
×5story building
+106ft-86ft

Overall

10415

Females

2166

F50-54

2166

20K→Half

12.4 - 13.1 mi

Top 34%
×2story building
+19ft-37ft

Overall

9710

Females

1838

F50-54

1838

Half→25K

13.1 - 15.5 mi

Top 39%
×4story building
+66ft-88ft

Overall

11117

Females

2650

F50-54

2650

25K→30K

15.5 - 18.6 mi

Top 49%
×9story building
+181ft-148ft

Overall

13980

Females

4349

F50-54

4349

30K→20M

18.6 - 20.0 mi

Top 45%
×5story building
+64ft-50ft

Overall

12858

Females

3887

F50-54

3887

20M→21M

20.0 - 21.0 mi

Top 52%
×8story building
+106ft-24ft

Overall

14894

Females

5110

F50-54

5110

21M→35K

21.0 - 21.8 mi

Top 40%
×7story building
+17ft-86ft

Overall

11499

Females

3371

F50-54

3371

35K→23M

21.8 - 23.0 mi

Top 48%
×5story building
+23ft-63ft

Overall

13675

Females

4626

F50-54

4626

23M→24M

23.0 - 24.0 mi

Top 48%
×6story building
+12ft-82ft

Overall

13771

Females

4694

F50-54

4694

24M→40K

24.0 - 24.9 mi

Top 46%
×1story
+6ft-20ft

Overall

13054

Females

4465

F50-54

4465

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

13902

Females

4945

F50-54

4945

25.2M→Finish

25.2 - 26.2 mi

Top 61%
×2story building
+22ft-21ft

Overall

17185

Females

6647

F50-54

6647

Passing Analysis

Category:
Athletes Passed
2602
Passed By
2128
Net Change
+474
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12663
5K → 10K92141+880#12663#11783
10K → 15K53924+515#11783#11268
15K → 20K30659+247#11268#11021
20K → Half887+81#11021#10940
Half → 25K161168-7#10940#10947
25K → 30K100648-548#10947#11495
30K → 20M106157-51#11495#11546
20M → 21M47274-227#11546#11773
21M → 35K7039+31#11773#11742
35K → 23M89198-109#11742#11851
23M → 24M53125-72#11851#11923
24M → 40K74108-34#11923#11957
40K → 25.2M2642-16#11957#11973
25.2M → Finish22238-216#11973#12189
TOTALS26022128+474
📊

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