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BOSTON MARATHON 2025

Ssuyu Liu

Bib: 10562•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 36%
Gender (Female)
#0 / 12228
Top 19%
Masters (Masters Women)
#0 / 6759
Top 7%
Division (F45-49)
#0 / 1813
Top 8%
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
7:20/mi
22:48
↑ 97↓ 3451.5%
10K· 6.21 mi
7:15/mi
45:19
↑ 79↓ 1380.4%
15K· 9.32 mi
7:19/mi
1:08:04
↑ 67↓ 78
20K· 12.43 mi
7:31/mi
1:31:24
↑ 106↓ 860.1%
Half· 13.11 mi
7:24/mi
1:36:27
↑ 19↓ 370.5%
25K· 15.53 mi
7:35/mi
1:54:51
↑ 66↓ 880.2%
30K· 18.64 mi
7:53/mi
2:19:19
↑ 181↓ 1480.2%
20M
8:00/mi
2:30:11
↑ 64↓ 500.2%
21M
8:32/mi
2:38:43
↑ 106↓ 241.6%
35K· 21.75 mi
7:52/mi
2:44:36
↑ 17↓ 861.7%
23M
8:03/mi
2:54:41
↑ 23↓ 630.6%
24M
7:46/mi
3:02:27
↓ 821.3%
40K· 24.85 mi
8:01/mi
3:09:18
↓ 200.3%
25.2M
8:45/mi
3:12:19
↑ 13↓ 160.2%
Finish· 26.22 mi
7:33/mi
3:20:01
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:27
Pace7:21 /mi
2nd Half
Distance13.11 mi
Time1:43:34
Pace7:54 /mi
📊Positive Split: 7.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:4622:487:2022:48
7:20
-
10K
6.21 mi11:11:1745:197:1822:31
7:15
-0:05
15K
9.32 mi11:34:021:08:047:1822:45
7:19
+0:04
20K
12.43 mi11:57:221:31:247:2123:20
7:31
+0:12
Half
13.11 mi12:02:251:36:277:215:03
7:24
-0:07
25K
15.53 mi12:20:491:54:517:2418:24
7:35
+0:11
30K
18.64 mi12:45:172:19:197:2824:28
7:53
+0:18
20M
20.00 mi12:56:092:30:117:3110:52
8:00
+0:07
21M
21.00 mi13:04:412:38:437:338:32
8:32
+0:32
35K
21.75 mi13:10:342:44:367:345:53
7:52
-0:40
23M
23.00 mi13:20:392:54:417:3610:05
8:03
+0:11
24M
24.00 mi13:28:253:02:277:367:46
7:46
-0:17
40K
24.85 mi13:35:163:09:187:376:51
8:01
+0:15
25.2M
25.20 mi13:38:173:12:197:383:01
8:45
+0:44
Finish
26.22 mi13:45:593:20:017:387:42
7:33
-1:12

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

7:38 /mi

Slowest Pace

8:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:44:09

52% of race

Time at Steady Pace

56:31

28% of race

Time at Slower Pace

39:21

20% of race

Average Pace: 7:38 /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 mi10:48:4622:487:2022:48
7:20
#10769
10K
6.21 mi11:11:1745:197:1822:31
7:15
#10287
15K
9.32 mi11:34:021:08:047:1822:45
7:19
#10232
20K
12.43 mi11:57:221:31:247:2123:20
7:31
#10357
Half
13.11 mi12:02:251:36:277:215:03
7:24
#10367
25K
15.53 mi12:20:491:54:517:2418:24
7:35
#10394
30K
18.64 mi12:45:172:19:197:2824:28
7:53
#10349
20M
20.00 mi12:56:092:30:117:3110:52
8:00
#10335
21M
21.00 mi13:04:412:38:437:338:32
8:32
#10311
35K
21.75 mi13:10:342:44:367:345:53
7:52
#10357
23M
23.00 mi13:20:392:54:417:3610:05
8:03
#10307
24M
24.00 mi13:28:253:02:277:367:46
7:46
#10236
40K
24.85 mi13:35:163:09:187:376:51
8:01
#10207
25.2M
25.20 mi13:38:173:12:197:383:01
8:45
#10188
Finish
26.22 mi13:45:593:20:017:387:42
7:33
#10156
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi107692175217510190(Top 36%)1973(Top 16%)1973(Top 109%)
10K6.21 mi3.10 mi10287+4821951+2241951+2249919(Top 35%)1798(Top 15%)1798(Top 99%)
15K9.32 mi3.11 mi10232+551945+61945+610190(Top 36%)1973(Top 16%)1973(Top 109%)
20K12.43 mi3.11 mi10357-1252033-882033-8810861(Top 38%)2400(Top 20%)2400(Top 132%)
Half13.11 mi0.68 mi10367-102049-162049-1610956(Top 39%)2398(Top 20%)2398(Top 132%)
25K15.53 mi2.42 mi10394-272083-342083-3410690(Top 38%)2421(Top 20%)2421(Top 134%)
30K18.64 mi3.11 mi10349+452125-422125-4210461(Top 37%)2519(Top 21%)2519(Top 139%)
20M20.00 mi1.36 mi10335+142165-402165-4010438(Top 37%)2652(Top 22%)2652(Top 146%)
21M21.00 mi1.00 mi10311+242197-322197-3210706(Top 38%)2954(Top 24%)2954(Top 163%)
35K21.75 mi0.75 mi10357-462243-462243-4611306(Top 40%)3258(Top 27%)3258(Top 180%)
23M23.00 mi1.25 mi10307+502265-222265-2210436(Top 37%)2959(Top 24%)2959(Top 163%)
24M24.00 mi1.00 mi10236+712261+42261+49590(Top 34%)2596(Top 21%)2596(Top 143%)
40K24.85 mi0.85 mi10207+292280-192280-1910309(Top 36%)3073(Top 25%)3073(Top 169%)
25.2M25.20 mi0.35 mi10188+192288-82288-810331(Top 36%)3167(Top 26%)3167(Top 175%)
Finish26.22 mi1.02 mi10156+322298-102298-109621(Top 34%)2815(Top 23%)2815(Top 155%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21story building
+97ft-345ft

Overall

10190

Females

1973

F45-49

1973

5K→10K

3.1 - 6.2 mi

Top 35%
×5story building
+79ft-138ft

Overall

9919

Females

1798

F45-49

1798

10K→15K

6.2 - 9.3 mi

Top 36%
×3story building
+67ft-78ft

Overall

10190

Females

1973

F45-49

1973

15K→20K

9.3 - 12.4 mi

Top 38%
×5story building
+106ft-86ft

Overall

10861

Females

2400

F45-49

2400

20K→Half

12.4 - 13.1 mi

Top 39%
×2story building
+19ft-37ft

Overall

10956

Females

2398

F45-49

2398

Half→25K

13.1 - 15.5 mi

Top 38%
×4story building
+66ft-88ft

Overall

10690

Females

2421

F45-49

2421

25K→30K

15.5 - 18.6 mi

Top 37%
×9story building
+181ft-148ft

Overall

10461

Females

2519

F45-49

2519

30K→20M

18.6 - 20.0 mi

Top 37%
×5story building
+64ft-50ft

Overall

10438

Females

2652

F45-49

2652

20M→21M

20.0 - 21.0 mi

Top 38%
×8story building
+106ft-24ft

Overall

10706

Females

2954

F45-49

2954

21M→35K

21.0 - 21.8 mi

Top 40%
×7story building
+17ft-86ft

Overall

11306

Females

3258

F45-49

3258

35K→23M

21.8 - 23.0 mi

Top 37%
×5story building
+23ft-63ft

Overall

10436

Females

2959

F45-49

2959

23M→24M

23.0 - 24.0 mi

Top 34%
×6story building
+12ft-82ft

Overall

9590

Females

2596

F45-49

2596

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

10309

Females

3073

F45-49

3073

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

10331

Females

3167

F45-49

3167

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2story building
+22ft-21ft

Overall

9621

Females

2815

F45-49

2815

Passing Analysis

Category:
Athletes Passed
2072
Passed By
1457
Net Change
+613
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10769
5K → 10K56381+482#10769#10287
10K → 15K193138+55#10287#10232
15K → 20K137261-125#10232#10357
20K → Half2939-10#10357#10367
Half → 25K151178-27#10367#10394
25K → 30K256210+45#10394#10349
30K → 20M121107+14#10349#10335
20M → 21M11591+24#10335#10311
21M → 35K4591-46#10311#10357
35K → 23M13383+50#10357#10307
23M → 24M10635+71#10307#10236
24M → 40K8657+29#10236#10207
40K → 25.2M4627+19#10207#10188
25.2M → Finish9159+32#10188#10156
TOTALS20721457+613
📊

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