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BOSTON MARATHON 2025

Lili Guo

Bib: 19627•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 44%
Gender (Female)
#0 / 12228
Top 28%
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
7:41/mi
23:51
↑ 97↓ 3451.5%
10K· 6.21 mi
7:39/mi
47:36
↑ 79↓ 1380.4%
15K· 9.32 mi
7:36/mi
1:11:14
↑ 67↓ 78
20K· 12.43 mi
7:40/mi
1:35:03
↑ 106↓ 860.1%
Half· 13.11 mi
7:40/mi
1:40:17
↑ 19↓ 370.5%
25K· 15.53 mi
7:52/mi
1:59:22
↑ 66↓ 880.2%
30K· 18.64 mi
8:07/mi
2:24:35
↑ 181↓ 1480.2%
20M
8:28/mi
2:36:06
↑ 64↓ 500.2%
21M
8:42/mi
2:44:48
↑ 106↓ 241.6%
35K· 21.75 mi
7:45/mi
2:50:36
↑ 17↓ 861.7%
23M
8:07/mi
3:00:46
↑ 23↓ 630.6%
24M
8:01/mi
3:08:47
↓ 821.3%
40K· 24.85 mi
8:16/mi
3:15:51
↓ 200.3%
25.2M
9:23/mi
3:19:05
↑ 13↓ 160.2%
Finish· 26.22 mi
8:14/mi
3:27:28
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:17
Pace7:39 /mi
2nd Half
Distance13.11 mi
Time1:47:11
Pace8:11 /mi
📊Positive Split: 6.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:1223:517:4123:51
7:41
-
10K
6.21 mi11:39:5747:367:4023:45
7:39
-0:02
15K
9.32 mi12:03:351:11:147:3923:38
7:36
-0:03
20K
12.43 mi12:27:241:35:037:3923:49
7:40
+0:04
Half
13.11 mi12:32:381:40:177:395:14
7:40
0:00
25K
15.53 mi12:51:431:59:227:4119:05
7:52
+0:12
30K
18.64 mi13:16:562:24:357:4525:13
8:07
+0:15
20M
20.00 mi13:28:272:36:067:4811:31
8:28
+0:21
21M
21.00 mi13:37:092:44:487:518:42
8:42
+0:14
35K
21.75 mi13:42:572:50:367:515:48
7:45
-0:57
23M
23.00 mi13:53:073:00:467:5210:10
8:07
+0:22
24M
24.00 mi14:01:083:08:477:528:01
8:01
-0:06
40K
24.85 mi14:08:123:15:517:537:04
8:16
+0:15
25.2M
25.20 mi14:11:263:19:057:543:14
9:23
+1:07
Finish
26.22 mi14:19:493:27:287:558:23
8:14
-1:09

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

7:36 /mi

Average Pace

7:55 /mi

Slowest Pace

9:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:46:05

51% of race

Time at Steady Pace

1:10:52

34% of race

Time at Slower Pace

30:31

15% of race

Average Pace: 7:55 /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 mi11:16:1223:517:4123:51
7:41
#13772
10K
6.21 mi11:39:5747:367:4023:45
7:39
#13600
15K
9.32 mi12:03:351:11:147:3923:38
7:36
#13259
20K
12.43 mi12:27:241:35:037:3923:49
7:40
#12913
Half
13.11 mi12:32:381:40:177:395:14
7:40
#12907
25K
15.53 mi12:51:431:59:227:4119:05
7:52
#12901
30K
18.64 mi13:16:562:24:357:4525:13
8:07
#12704
20M
20.00 mi13:28:272:36:067:4811:31
8:28
#12775
21M
21.00 mi13:37:092:44:487:518:42
8:42
#12681
35K
21.75 mi13:42:572:50:367:515:48
7:45
#12571
23M
23.00 mi13:53:073:00:467:5210:10
8:07
#12432
24M
24.00 mi14:01:083:08:477:528:01
8:01
#12369
40K
24.85 mi14:08:123:15:517:537:04
8:16
#12339
25.2M
25.20 mi14:11:263:19:057:543:14
9:23
#12355
Finish
26.22 mi14:19:493:27:287:558:23
8:14
#12440
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi137723757375712672(Top 45%)3261(Top 27%)3261(Top 250%)
10K6.21 mi3.10 mi13600+1723706+513706+5113424(Top 47%)3618(Top 30%)3618(Top 278%)
15K9.32 mi3.11 mi13259+3413548+1583548+15812672(Top 45%)3261(Top 27%)3261(Top 250%)
20K12.43 mi3.11 mi12913+3463396+1523396+15212120(Top 43%)3062(Top 25%)3062(Top 235%)
Half13.11 mi0.68 mi12907+63397-13397-113209(Top 47%)3609(Top 30%)3609(Top 277%)
25K15.53 mi2.42 mi12901+63420-233420-2312913(Top 45%)3622(Top 30%)3622(Top 278%)
30K18.64 mi3.11 mi12704+1973375+453375+4512227(Top 43%)3403(Top 28%)3403(Top 261%)
20M20.00 mi1.36 mi12775-713457-823457-8213632(Top 48%)4305(Top 35%)4305(Top 330%)
21M21.00 mi1.00 mi12681+943439+183439+1811694(Top 41%)3444(Top 28%)3444(Top 264%)
35K21.75 mi0.75 mi12571+1103401+383401+3810529(Top 37%)2880(Top 24%)2880(Top 221%)
23M23.00 mi1.25 mi12432+1393370+313370+3110895(Top 38%)3182(Top 26%)3182(Top 244%)
24M24.00 mi1.00 mi12369+633360+103360+1011389(Top 40%)3512(Top 29%)3512(Top 270%)
40K24.85 mi0.85 mi12339+303376-163376-1611987(Top 42%)3908(Top 32%)3908(Top 300%)
25.2M25.20 mi0.35 mi12355-163397-213397-2113903(Top 49%)4946(Top 40%)4946(Top 380%)
Finish26.22 mi1.02 mi12440-853467-703467-7014451(Top 51%)5174(Top 42%)5174(Top 397%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 45%
×21story building
+97ft-345ft

Overall

12672

Females

3261

F50-54

3261

5K→10K

3.1 - 6.2 mi

Top 47%
×5story building
+79ft-138ft

Overall

13424

Females

3618

F50-54

3618

10K→15K

6.2 - 9.3 mi

Top 45%
×3story building
+67ft-78ft

Overall

12672

Females

3261

F50-54

3261

15K→20K

9.3 - 12.4 mi

Top 43%
×5story building
+106ft-86ft

Overall

12120

Females

3062

F50-54

3062

20K→Half

12.4 - 13.1 mi

Top 47%
×2story building
+19ft-37ft

Overall

13209

Females

3609

F50-54

3609

Half→25K

13.1 - 15.5 mi

Top 45%
×4story building
+66ft-88ft

Overall

12913

Females

3622

F50-54

3622

25K→30K

15.5 - 18.6 mi

Top 43%
×9story building
+181ft-148ft

Overall

12227

Females

3403

F50-54

3403

30K→20M

18.6 - 20.0 mi

Top 48%
×5story building
+64ft-50ft

Overall

13632

Females

4305

F50-54

4305

20M→21M

20.0 - 21.0 mi

Top 41%
×8story building
+106ft-24ft

Overall

11694

Females

3444

F50-54

3444

21M→35K

21.0 - 21.8 mi

Top 37%
×7story building
+17ft-86ft

Overall

10529

Females

2880

F50-54

2880

35K→23M

21.8 - 23.0 mi

Top 38%
×5story building
+23ft-63ft

Overall

10895

Females

3182

F50-54

3182

23M→24M

23.0 - 24.0 mi

Top 40%
×6story building
+12ft-82ft

Overall

11389

Females

3512

F50-54

3512

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

11987

Females

3908

F50-54

3908

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

13903

Females

4946

F50-54

4946

25.2M→Finish

25.2 - 26.2 mi

Top 51%
×2story building
+22ft-21ft

Overall

14451

Females

5174

F50-54

5174

Passing Analysis

Category:
Athletes Passed
2511
Passed By
1179
Net Change
+1332
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13772
5K → 10K381209+172#13772#13600
10K → 15K39756+341#13600#13259
15K → 20K40054+346#13259#12913
20K → Half3327+6#12913#12907
Half → 25K160154+6#12907#12901
25K → 30K323126+197#12901#12704
30K → 20M101172-71#12704#12775
20M → 21M15561+94#12775#12681
21M → 35K12313+110#12681#12571
35K → 23M18344+139#12571#12432
23M → 24M9936+63#12432#12369
24M → 40K8656+30#12369#12339
40K → 25.2M2137-16#12339#12355
25.2M → Finish49134-85#12355#12440
TOTALS25111179+1332
📊

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