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BOSTON MARATHON 2025

Alice Liao

Bib: 21938•F

WA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 46%
Division (F45-49)
#0 / 1813
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
7:54/mi
24:32
↑ 97↓ 3451.5%
10K· 6.21 mi
7:57/mi
49:14
↑ 79↓ 1380.4%
15K· 9.32 mi
8:06/mi
1:14:25
↑ 67↓ 78
20K· 12.43 mi
8:34/mi
1:41:02
↑ 106↓ 860.1%
Half· 13.11 mi
8:33/mi
1:46:52
↑ 19↓ 370.5%
25K· 15.53 mi
8:56/mi
2:08:32
↑ 66↓ 880.2%
30K· 18.64 mi
9:12/mi
2:37:08
↑ 181↓ 1480.2%
20M
9:46/mi
2:50:25
↑ 64↓ 500.2%
21M
9:55/mi
3:00:20
↑ 106↓ 241.6%
35K· 21.75 mi
9:19/mi
3:07:18
↑ 17↓ 861.7%
23M
9:35/mi
3:19:18
↑ 23↓ 630.6%
24M
9:49/mi
3:29:07
↓ 821.3%
40K· 24.85 mi
9:47/mi
3:37:29
↓ 200.3%
25.2M
10:21/mi
3:41:03
↑ 13↓ 160.2%
Finish· 26.22 mi
8:37/mi
3:49:50
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:52
Pace8:09 /mi
2nd Half
Distance13.11 mi
Time2:02:58
Pace9:23 /mi
📊Positive Split: 15.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:3624:327:5424:32
7:54
-
10K
6.21 mi11:45:1849:147:5524:42
7:57
+0:03
15K
9.32 mi12:10:291:14:257:5925:11
8:06
+0:09
20K
12.43 mi12:37:061:41:028:0826:37
8:34
+0:28
Half
13.11 mi12:42:561:46:528:095:50
8:33
-0:01
25K
15.53 mi13:04:362:08:328:1621:40
8:56
+0:23
30K
18.64 mi13:33:122:37:088:2628:36
9:12
+0:16
20M
20.00 mi13:46:292:50:258:3113:17
9:46
+0:34
21M
21.00 mi13:56:243:00:208:359:55
9:55
+0:09
35K
21.75 mi14:03:223:07:188:376:58
9:19
-0:36
23M
23.00 mi14:15:223:19:188:4012:00
9:35
+0:16
24M
24.00 mi14:25:113:29:078:439:49
9:49
+0:14
40K
24.85 mi14:33:333:37:298:458:22
9:47
-0:02
25.2M
25.20 mi14:37:073:41:038:463:34
10:21
+0:34
Finish
26.22 mi14:45:543:49:508:468:47
8:37
-1:44

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

7:54 /mi

Average Pace

8:46 /mi

Slowest Pace

10:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:55:39

50% of race

Time at Steady Pace

57:14

25% of race

Time at Slower Pace

56:57

25% of race

Average Pace: 8:46 /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 mi11:20:3624:327:5424:32
7:54
#15680
10K
6.21 mi11:45:1849:147:5524:42
7:57
#15901
15K
9.32 mi12:10:291:14:257:5925:11
8:06
#16211
20K
12.43 mi12:37:061:41:028:0826:37
8:34
#16899
Half
13.11 mi12:42:561:46:528:095:50
8:33
#17030
25K
15.53 mi13:04:362:08:328:1621:40
8:56
#17451
30K
18.64 mi13:33:122:37:088:2628:36
9:12
#17671
20M
20.00 mi13:46:292:50:258:3113:17
9:46
#17916
21M
21.00 mi13:56:243:00:208:359:55
9:55
#17942
35K
21.75 mi14:03:223:07:188:376:58
9:19
#18003
23M
23.00 mi14:15:223:19:188:4012:00
9:35
#18067
24M
24.00 mi14:25:113:29:078:439:49
9:49
#18229
40K
24.85 mi14:33:333:37:298:458:22
9:47
#18324
25.2M
25.20 mi14:37:073:41:038:463:34
10:21
#18329
Finish
26.22 mi14:45:543:49:508:468:47
8:37
#18289
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi156804947494716788(Top 59%)5603(Top 46%)5603(Top 309%)
10K6.21 mi3.10 mi15901-2215077-1305077-13016091(Top 57%)5179(Top 42%)5179(Top 286%)
15K9.32 mi3.11 mi16211-3105260-1835260-18316788(Top 59%)5603(Top 46%)5603(Top 309%)
20K12.43 mi3.11 mi16899-6885680-4205680-42018658(Top 66%)6724(Top 55%)6724(Top 371%)
Half13.11 mi0.68 mi17030-1315765-855765-8519544(Top 69%)7200(Top 59%)7200(Top 397%)
25K15.53 mi2.42 mi17451-4216027-2626027-26219624(Top 69%)7324(Top 60%)7324(Top 404%)
30K18.64 mi3.11 mi17671-2206221-1946221-19418661(Top 66%)6927(Top 57%)6927(Top 382%)
20M20.00 mi1.36 mi17916-2456373-1526373-15220213(Top 71%)7915(Top 65%)7915(Top 437%)
21M21.00 mi1.00 mi17942-266399-266399-2617995(Top 63%)6789(Top 56%)6789(Top 374%)
35K21.75 mi0.75 mi18003-616451-526451-5219632(Top 69%)7780(Top 64%)7780(Top 429%)
23M23.00 mi1.25 mi18067-646530-796530-7919035(Top 67%)7529(Top 62%)7529(Top 415%)
24M24.00 mi1.00 mi18229-1626644-1146644-11420783(Top 73%)8491(Top 69%)8491(Top 468%)
40K24.85 mi0.85 mi18324-956726-826726-8219775(Top 70%)8027(Top 66%)8027(Top 443%)
25.2M25.20 mi0.35 mi18329-56745-196745-1918475(Top 65%)7364(Top 60%)7364(Top 406%)
Finish26.22 mi1.02 mi18289+406738+76738+716997(Top 60%)6565(Top 54%)6565(Top 362%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21story building
+97ft-345ft

Overall

16788

Females

5603

F45-49

5603

5K→10K

3.1 - 6.2 mi

Top 57%
×5story building
+79ft-138ft

Overall

16091

Females

5179

F45-49

5179

10K→15K

6.2 - 9.3 mi

Top 59%
×3story building
+67ft-78ft

Overall

16788

Females

5603

F45-49

5603

15K→20K

9.3 - 12.4 mi

Top 66%
×5story building
+106ft-86ft

Overall

18658

Females

6724

F45-49

6724

20K→Half

12.4 - 13.1 mi

Top 69%
×2story building
+19ft-37ft

Overall

19544

Females

7200

F45-49

7200

Half→25K

13.1 - 15.5 mi

Top 69%
×4story building
+66ft-88ft

Overall

19624

Females

7324

F45-49

7324

25K→30K

15.5 - 18.6 mi

Top 66%
×9story building
+181ft-148ft

Overall

18661

Females

6927

F45-49

6927

30K→20M

18.6 - 20.0 mi

Top 71%
×5story building
+64ft-50ft

Overall

20213

Females

7915

F45-49

7915

20M→21M

20.0 - 21.0 mi

Top 63%
×8story building
+106ft-24ft

Overall

17995

Females

6789

F45-49

6789

21M→35K

21.0 - 21.8 mi

Top 69%
×7story building
+17ft-86ft

Overall

19632

Females

7780

F45-49

7780

35K→23M

21.8 - 23.0 mi

Top 67%
×5story building
+23ft-63ft

Overall

19035

Females

7529

F45-49

7529

23M→24M

23.0 - 24.0 mi

Top 73%
×6story building
+12ft-82ft

Overall

20783

Females

8491

F45-49

8491

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

19775

Females

8027

F45-49

8027

40K→25.2M

24.9 - 25.2 mi

Top 65%
×1story
+13ft-16ft

Overall

18475

Females

7364

F45-49

7364

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2story building
+22ft-21ft

Overall

16997

Females

6565

F45-49

6565

Passing Analysis

Category:
Athletes Passed
1094
Passed By
3703
Net Change
-2609
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15680
5K → 10K225446-221#15680#15901
10K → 15K110420-310#15901#16211
15K → 20K54742-688#16211#16899
20K → Half11142-131#16899#17030
Half → 25K74495-421#17030#17451
25K → 30K153373-220#17451#17671
30K → 20M60305-245#17671#17916
20M → 21M93119-26#17916#17942
21M → 35K42103-61#17942#18003
35K → 23M85149-64#18003#18067
23M → 24M39201-162#18067#18229
24M → 40K45140-95#18229#18324
40K → 25.2M2631-5#18324#18329
25.2M → Finish7737+40#18329#18289
TOTALS10943703-2609
📊

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