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BOSTON MARATHON 2025

Grace Liao

Bib: 25726•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 (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
9:17/mi
28:49
↑ 97↓ 3451.5%
10K· 6.21 mi
9:41/mi
58:55
↑ 79↓ 1380.4%
15K· 9.32 mi
9:50/mi
1:29:28
↑ 67↓ 78
20K· 12.43 mi
10:00/mi
2:00:32
↑ 106↓ 860.1%
Half· 13.11 mi
9:43/mi
2:07:10
↑ 19↓ 370.5%
25K· 15.53 mi
10:13/mi
2:31:56
↑ 66↓ 880.2%
30K· 18.64 mi
10:28/mi
3:04:28
↑ 181↓ 1480.2%
20M
10:37/mi
3:18:54
↑ 64↓ 500.2%
21M
10:59/mi
3:29:53
↑ 106↓ 241.6%
35K· 21.75 mi
10:11/mi
3:37:30
↑ 17↓ 861.7%
23M
10:43/mi
3:50:55
↑ 23↓ 630.6%
24M
10:19/mi
4:01:14
↓ 821.3%
40K· 24.85 mi
10:13/mi
4:09:58
↓ 200.3%
25.2M
10:32/mi
4:13:36
↑ 13↓ 160.2%
Finish· 26.22 mi
9:30/mi
4:23:17
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:07:10
Pace9:42 /mi
2nd Half
Distance13.11 mi
Time2:16:07
Pace10:23 /mi
📊Positive Split: 7.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:43:5328:499:1728:49
9:17
-
10K
6.21 mi12:13:5958:559:2930:06
9:41
+0:24
15K
9.32 mi12:44:321:29:289:3630:33
9:50
+0:09
20K
12.43 mi13:15:362:00:329:4231:04
10:00
+0:10
Half
13.11 mi13:22:142:07:109:426:38
9:43
-0:17
25K
15.53 mi13:47:002:31:569:4724:46
10:13
+0:30
30K
18.64 mi14:19:323:04:289:5432:32
10:28
+0:15
20M
20.00 mi14:33:583:18:549:5714:26
10:37
+0:09
21M
21.00 mi14:44:573:29:5310:0010:59
10:59
+0:22
35K
21.75 mi14:52:343:37:3010:007:37
10:11
-0:48
23M
23.00 mi15:05:593:50:5510:0213:25
10:43
+0:32
24M
24.00 mi15:16:184:01:1410:0310:19
10:19
-0:24
40K
24.85 mi15:25:024:09:5810:038:44
10:13
-0:06
25.2M
25.20 mi15:28:404:13:3610:043:38
10:32
+0:19
Finish
26.22 mi15:38:214:23:1710:039:41
9:30
-1:02

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

9:17 /mi

Average Pace

10:03 /mi

Slowest Pace

10:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:24:28

55% of race

Time at Steady Pace

1:47:50

41% of race

Time at Slower Pace

10:59

4% of race

Average Pace: 10:02 /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 mi11:43:5328:499:1728:49
9:17
#23489
10K
6.21 mi12:13:5958:559:2930:06
9:41
#24133
15K
9.32 mi12:44:321:29:289:3630:33
9:50
#24313
20K
12.43 mi13:15:362:00:329:4231:04
10:00
#24297
Half
13.11 mi13:22:142:07:109:426:38
9:43
#24294
25K
15.53 mi13:47:002:31:569:4724:46
10:13
#24184
30K
18.64 mi14:19:323:04:289:5432:32
10:28
#23951
20M
20.00 mi14:33:583:18:549:5714:26
10:37
#23864
21M
21.00 mi14:44:573:29:5310:0010:59
10:59
#23714
35K
21.75 mi14:52:343:37:3010:007:37
10:11
#23665
23M
23.00 mi15:05:593:50:5510:0213:25
10:43
#23581
24M
24.00 mi15:16:184:01:1410:0310:19
10:19
#23526
40K
24.85 mi15:25:024:09:5810:038:44
10:13
#23427
25.2M
25.20 mi15:28:404:13:3610:043:38
10:32
#23359
Finish
26.22 mi15:38:214:23:1710:039:41
9:30
#23296
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi234899428942824623(Top 87%)10017(Top 82%)10017(Top 553%)
10K6.21 mi3.10 mi24133-6449755-3279755-32724586(Top 87%)10009(Top 82%)10009(Top 552%)
15K9.32 mi3.11 mi24313-1809849-949849-9424623(Top 87%)10017(Top 82%)10017(Top 553%)
20K12.43 mi3.11 mi24297+169863-149863-1424217(Top 85%)9839(Top 80%)9839(Top 543%)
Half13.11 mi0.68 mi24294+39865-29865-224182(Top 85%)9802(Top 80%)9802(Top 541%)
25K15.53 mi2.42 mi24184+1109809+569809+5623756(Top 84%)9617(Top 79%)9617(Top 530%)
30K18.64 mi3.11 mi23951+2339705+1049705+10422896(Top 81%)9261(Top 76%)9261(Top 511%)
20M20.00 mi1.36 mi23864+879676+299676+2922750(Top 80%)9284(Top 76%)9284(Top 512%)
21M21.00 mi1.00 mi23714+1509617+599617+5921375(Top 75%)8641(Top 71%)8641(Top 477%)
35K21.75 mi0.75 mi23665+499597+209597+2022400(Top 79%)9237(Top 76%)9237(Top 509%)
23M23.00 mi1.25 mi23581+849571+269571+2622564(Top 79%)9373(Top 77%)9373(Top 517%)
24M24.00 mi1.00 mi23526+559556+159556+1522306(Top 79%)9295(Top 76%)9295(Top 513%)
40K24.85 mi0.85 mi23427+999516+409516+4021140(Top 74%)8740(Top 71%)8740(Top 482%)
25.2M25.20 mi0.35 mi23359+689495+219495+2119222(Top 68%)7777(Top 64%)7777(Top 429%)
Finish26.22 mi1.02 mi23296+639471+249471+2421215(Top 75%)8771(Top 72%)8771(Top 484%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 87%
×21story building
+97ft-345ft

Overall

24623

Females

10017

F45-49

10017

5K→10K

3.1 - 6.2 mi

Top 87%
×5story building
+79ft-138ft

Overall

24586

Females

10009

F45-49

10009

10K→15K

6.2 - 9.3 mi

Top 87%
×3story building
+67ft-78ft

Overall

24623

Females

10017

F45-49

10017

15K→20K

9.3 - 12.4 mi

Top 85%
×5story building
+106ft-86ft

Overall

24217

Females

9839

F45-49

9839

20K→Half

12.4 - 13.1 mi

Top 85%
×2story building
+19ft-37ft

Overall

24182

Females

9802

F45-49

9802

Half→25K

13.1 - 15.5 mi

Top 84%
×4story building
+66ft-88ft

Overall

23756

Females

9617

F45-49

9617

25K→30K

15.5 - 18.6 mi

Top 81%
×9story building
+181ft-148ft

Overall

22896

Females

9261

F45-49

9261

30K→20M

18.6 - 20.0 mi

Top 80%
×5story building
+64ft-50ft

Overall

22750

Females

9284

F45-49

9284

20M→21M

20.0 - 21.0 mi

Top 75%
×8story building
+106ft-24ft

Overall

21375

Females

8641

F45-49

8641

21M→35K

21.0 - 21.8 mi

Top 79%
×7story building
+17ft-86ft

Overall

22400

Females

9237

F45-49

9237

35K→23M

21.8 - 23.0 mi

Top 79%
×5story building
+23ft-63ft

Overall

22564

Females

9373

F45-49

9373

23M→24M

23.0 - 24.0 mi

Top 79%
×6story building
+12ft-82ft

Overall

22306

Females

9295

F45-49

9295

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

21140

Females

8740

F45-49

8740

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

19222

Females

7777

F45-49

7777

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2story building
+22ft-21ft

Overall

21215

Females

8771

F45-49

8771

Passing Analysis

Category:
Athletes Passed
1567
Passed By
1374
Net Change
+193
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23489
5K → 10K62706-644#23489#24133
10K → 15K85265-180#24133#24313
15K → 20K150134+16#24313#24297
20K → Half2219+3#24297#24294
Half → 25K16252+110#24294#24184
25K → 30K28956+233#24184#23951
30K → 20M11427+87#23951#23864
20M → 21M16515+150#23864#23714
21M → 35K7021+49#23714#23665
35K → 23M10925+84#23665#23581
23M → 24M7722+55#23581#23526
24M → 40K1089+99#23526#23427
40K → 25.2M724+68#23427#23359
25.2M → Finish8219+63#23359#23296
TOTALS15671374+193
📊

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