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BOSTON MARATHON 2025

Jiajun Liu

Bib: 23523•F

GA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 49%
Division (F50-54)
#0 / 1303
Top 46%
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
8:42/mi
27:02
↑ 97↓ 3451.5%
10K· 6.21 mi
8:39/mi
53:56
↑ 79↓ 1380.4%
15K· 9.32 mi
8:39/mi
1:20:47
↑ 67↓ 78
20K· 12.43 mi
8:38/mi
1:47:35
↑ 106↓ 860.1%
Half· 13.11 mi
8:27/mi
1:53:21
↑ 19↓ 370.5%
25K· 15.53 mi
8:42/mi
2:14:27
↑ 66↓ 880.2%
30K· 18.64 mi
8:56/mi
2:42:11
↑ 181↓ 1480.2%
20M
8:59/mi
2:54:24
↑ 64↓ 500.2%
21M
9:34/mi
3:03:58
↑ 106↓ 241.6%
35K· 21.75 mi
8:45/mi
3:10:31
↑ 17↓ 861.7%
23M
9:06/mi
3:21:55
↑ 23↓ 630.6%
24M
9:02/mi
3:30:57
↓ 821.3%
40K· 24.85 mi
9:20/mi
3:38:56
↓ 200.3%
25.2M
10:21/mi
3:42:30
↑ 13↓ 160.2%
Finish· 26.22 mi
9:34/mi
3:52:15
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:21
Pace8:39 /mi
2nd Half
Distance13.11 mi
Time1:58:54
Pace9:04 /mi
📊Positive Split: 4.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:26:4827:028:4227:02
8:42
-
10K
6.21 mi11:53:4253:568:4126:54
8:39
-0:03
15K
9.32 mi12:20:331:20:478:4026:51
8:39
0:00
20K
12.43 mi12:47:211:47:358:3926:48
8:38
-0:01
Half
13.11 mi12:53:071:53:218:395:46
8:27
-0:11
25K
15.53 mi13:14:132:14:278:3921:06
8:42
+0:15
30K
18.64 mi13:41:572:42:118:4227:44
8:56
+0:14
20M
20.00 mi13:54:102:54:248:4312:13
8:59
+0:03
21M
21.00 mi14:03:443:03:588:469:34
9:34
+0:35
35K
21.75 mi14:10:173:10:318:466:33
8:45
-0:49
23M
23.00 mi14:21:413:21:558:4711:24
9:06
+0:21
24M
24.00 mi14:30:433:30:578:479:02
9:02
-0:04
40K
24.85 mi14:38:423:38:568:497:59
9:20
+0:18
25.2M
25.20 mi14:42:163:42:308:503:34
10:21
+1:01
Finish
26.22 mi14:52:013:52:158:529:45
9:34
-0:47

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

8:27 /mi

Average Pace

8:52 /mi

Slowest Pace

10:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:26:19

37% of race

Time at Steady Pace

1:55:04

50% of race

Time at Slower Pace

30:52

13% of race

Average Pace: 8:51 /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 mi11:26:4827:028:4227:02
8:42
#21028
10K
6.21 mi11:53:4253:568:4126:54
8:39
#20806
15K
9.32 mi12:20:331:20:478:4026:51
8:39
#20572
20K
12.43 mi12:47:211:47:358:3926:48
8:38
#20171
Half
13.11 mi12:53:071:53:218:395:46
8:27
#20098
25K
15.53 mi13:14:132:14:278:3921:06
8:42
#19810
30K
18.64 mi13:41:572:42:118:4227:44
8:56
#19326
20M
20.00 mi13:54:102:54:248:4312:13
8:59
#19124
21M
21.00 mi14:03:443:03:588:469:34
9:34
#18961
35K
21.75 mi14:10:173:10:318:466:33
8:45
#18881
23M
23.00 mi14:21:413:21:558:4711:24
9:06
#18757
24M
24.00 mi14:30:433:30:578:479:02
9:02
#18707
40K
24.85 mi14:38:423:38:568:497:59
9:20
#18671
25.2M
25.20 mi14:42:163:42:308:503:34
10:21
#18662
Finish
26.22 mi14:52:013:52:158:529:45
9:34
#18793
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi210288097809720174(Top 71%)7528(Top 62%)7528(Top 578%)
10K6.21 mi3.10 mi20806+2227942+1557942+15520661(Top 73%)7835(Top 64%)7835(Top 601%)
15K9.32 mi3.11 mi20572+2347792+1507792+15020174(Top 71%)7528(Top 62%)7528(Top 578%)
20K12.43 mi3.11 mi20171+4017572+2207572+22018997(Top 67%)6917(Top 57%)6917(Top 531%)
Half13.11 mi0.68 mi20098+737532+407532+4018947(Top 67%)6870(Top 56%)6870(Top 527%)
25K15.53 mi2.42 mi19810+2887374+1587374+15818418(Top 65%)6666(Top 55%)6666(Top 512%)
30K18.64 mi3.11 mi19326+4847147+2277147+22717303(Top 61%)6194(Top 51%)6194(Top 475%)
20M20.00 mi1.36 mi19124+2027049+987049+9816770(Top 59%)6023(Top 49%)6023(Top 462%)
21M21.00 mi1.00 mi18961+1636986+636986+6316410(Top 58%)5940(Top 49%)5940(Top 456%)
35K21.75 mi0.75 mi18881+806961+256961+2517074(Top 60%)6395(Top 52%)6395(Top 491%)
23M23.00 mi1.25 mi18757+1246914+476914+4716868(Top 59%)6375(Top 52%)6375(Top 489%)
24M24.00 mi1.00 mi18707+506908+66908+617560(Top 62%)6796(Top 56%)6796(Top 522%)
40K24.85 mi0.85 mi18671+366915-76915-718035(Top 63%)7139(Top 58%)7139(Top 548%)
25.2M25.20 mi0.35 mi18662+96929-146929-1418481(Top 65%)7370(Top 60%)7370(Top 566%)
Finish26.22 mi1.02 mi18793-1317015-867015-8621438(Top 75%)8876(Top 73%)8876(Top 681%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21story building
+97ft-345ft

Overall

20174

Females

7528

F50-54

7528

5K→10K

3.1 - 6.2 mi

Top 73%
×5story building
+79ft-138ft

Overall

20661

Females

7835

F50-54

7835

10K→15K

6.2 - 9.3 mi

Top 71%
×3story building
+67ft-78ft

Overall

20174

Females

7528

F50-54

7528

15K→20K

9.3 - 12.4 mi

Top 67%
×5story building
+106ft-86ft

Overall

18997

Females

6917

F50-54

6917

20K→Half

12.4 - 13.1 mi

Top 67%
×2story building
+19ft-37ft

Overall

18947

Females

6870

F50-54

6870

Half→25K

13.1 - 15.5 mi

Top 65%
×4story building
+66ft-88ft

Overall

18418

Females

6666

F50-54

6666

25K→30K

15.5 - 18.6 mi

Top 61%
×9story building
+181ft-148ft

Overall

17303

Females

6194

F50-54

6194

30K→20M

18.6 - 20.0 mi

Top 59%
×5story building
+64ft-50ft

Overall

16770

Females

6023

F50-54

6023

20M→21M

20.0 - 21.0 mi

Top 58%
×8story building
+106ft-24ft

Overall

16410

Females

5940

F50-54

5940

21M→35K

21.0 - 21.8 mi

Top 60%
×7story building
+17ft-86ft

Overall

17074

Females

6395

F50-54

6395

35K→23M

21.8 - 23.0 mi

Top 59%
×5story building
+23ft-63ft

Overall

16868

Females

6375

F50-54

6375

23M→24M

23.0 - 24.0 mi

Top 62%
×6story building
+12ft-82ft

Overall

17560

Females

6796

F50-54

6796

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

18035

Females

7139

F50-54

7139

40K→25.2M

24.9 - 25.2 mi

Top 65%
×1story
+13ft-16ft

Overall

18481

Females

7370

F50-54

7370

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2story building
+22ft-21ft

Overall

21438

Females

8876

F50-54

8876

Passing Analysis

Category:
Athletes Passed
2974
Passed By
739
Net Change
+2235
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21028
5K → 10K412190+222#21028#20806
10K → 15K32793+234#20806#20572
15K → 20K43130+401#20572#20171
20K → Half796+73#20171#20098
Half → 25K31224+288#20098#19810
25K → 30K50925+484#19810#19326
30K → 20M22321+202#19326#19124
20M → 21M18421+163#19124#18961
21M → 35K9414+80#18961#18881
35K → 23M16440+124#18881#18757
23M → 24M8636+50#18757#18707
24M → 40K8852+36#18707#18671
40K → 25.2M4435+9#18671#18662
25.2M → Finish21152-131#18662#18793
TOTALS2974739+2235
📊

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