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BOSTON MARATHON 2025

Hao Liu

Bib: 4723•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 37%
Gender (Male)
#0 / 16105
Top 50%
Division (M18-39)
#0 / 5642
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
6:52/mi
21:20
↑ 97↓ 3451.5%
10K· 6.21 mi
6:47/mi
42:24
↑ 79↓ 1380.4%
15K· 9.32 mi
6:51/mi
1:03:40
↑ 67↓ 78
20K· 12.43 mi
7:05/mi
1:25:40
↑ 106↓ 860.1%
Half· 13.11 mi
6:58/mi
1:30:25
↑ 19↓ 370.5%
25K· 15.53 mi
7:07/mi
1:47:40
↑ 66↓ 880.2%
30K· 18.64 mi
7:46/mi
2:11:48
↑ 181↓ 1480.2%
20M
8:31/mi
2:23:22
↑ 64↓ 500.2%
21M
8:50/mi
2:32:12
↑ 106↓ 241.6%
35K· 21.75 mi
9:01/mi
2:38:57
↑ 17↓ 861.7%
23M
9:13/mi
2:50:30
↑ 23↓ 630.6%
24M
8:39/mi
2:59:09
↓ 821.3%
40K· 24.85 mi
9:25/mi
3:07:12
↓ 200.3%
25.2M
11:07/mi
3:11:02
↑ 13↓ 160.2%
Finish· 26.22 mi
9:54/mi
3:21:07
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:25
Pace6:54 /mi
2nd Half
Distance13.11 mi
Time1:50:42
Pace8:27 /mi
📊Positive Split: 22.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:1421:206:5221:20
6:52
-
10K
6.21 mi10:46:1842:246:4921:04
6:47
-0:05
15K
9.32 mi11:07:341:03:406:5021:16
6:51
+0:04
20K
12.43 mi11:29:341:25:406:5422:00
7:05
+0:14
Half
13.11 mi11:34:191:30:256:544:45
6:58
-0:07
25K
15.53 mi11:51:341:47:406:5617:15
7:07
+0:09
30K
18.64 mi12:15:422:11:487:0424:08
7:46
+0:39
20M
20.00 mi12:27:162:23:227:1011:34
8:31
+0:45
21M
21.00 mi12:36:062:32:127:158:50
8:50
+0:19
35K
21.75 mi12:42:512:38:577:196:45
9:01
+0:11
23M
23.00 mi12:54:242:50:307:2511:33
9:13
+0:12
24M
24.00 mi13:03:032:59:097:288:39
8:39
-0:34
40K
24.85 mi13:11:063:07:127:328:03
9:25
+0:46
25.2M
25.20 mi13:14:563:11:027:353:50
11:07
+1:42
Finish
26.22 mi13:25:013:21:077:4110:05
9:54
-1:13

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

6:47 /mi

Average Pace

7:41 /mi

Slowest Pace

11:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:11:48

66% of race

Time at Steady Pace

35:48

18% of race

Time at Slower Pace

33:31

17% of race

Average Pace: 7:40 /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 mi10:25:1421:206:5221:20
6:52
#6824
10K
6.21 mi10:46:1842:246:4921:04
6:47
#6525
15K
9.32 mi11:07:341:03:406:5021:16
6:51
#6490
20K
12.43 mi11:29:341:25:406:5422:00
7:05
#6776
Half
13.11 mi11:34:191:30:256:544:45
6:58
#6808
25K
15.53 mi11:51:341:47:406:5617:15
7:07
#6804
30K
18.64 mi12:15:422:11:487:0424:08
7:46
#7153
20M
20.00 mi12:27:162:23:227:1011:34
8:31
#7522
21M
21.00 mi12:36:062:32:127:158:50
8:50
#7732
35K
21.75 mi12:42:512:38:577:196:45
9:01
#8120
23M
23.00 mi12:54:242:50:307:2511:33
9:13
#8760
24M
24.00 mi13:03:032:59:097:288:39
8:39
#9070
40K
24.85 mi13:11:063:07:127:328:03
9:25
#9511
25.2M
25.20 mi13:14:563:11:027:353:50
11:07
#9775
Finish
26.22 mi13:25:013:21:077:4110:05
9:54
#10466
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi6824617561756537(Top 23%)5899(Top 37%)5899(Top 105%)
10K6.21 mi3.10 mi6525+2995935+2405935+2406195(Top 22%)5647(Top 35%)5647(Top 100%)
15K9.32 mi3.11 mi6490+355884+515884+516537(Top 23%)5899(Top 37%)5899(Top 105%)
20K12.43 mi3.11 mi6776-2866110-2266110-2267412(Top 26%)6499(Top 40%)6499(Top 115%)
Half13.11 mi0.68 mi6808-326132-226132-227324(Top 26%)6466(Top 40%)6466(Top 115%)
25K15.53 mi2.42 mi6804+46102+306102+307072(Top 25%)6174(Top 38%)6174(Top 109%)
30K18.64 mi3.11 mi7153-3496315-2136315-2139676(Top 34%)7522(Top 47%)7522(Top 133%)
20M20.00 mi1.36 mi7522-3696537-2226537-22213836(Top 49%)9359(Top 58%)9359(Top 166%)
21M21.00 mi1.00 mi7732-2106643-1066643-10612468(Top 44%)8586(Top 53%)8586(Top 152%)
35K21.75 mi0.75 mi8120-3886860-2176860-21718295(Top 64%)11165(Top 69%)11165(Top 198%)
23M23.00 mi1.25 mi8760-6407202-3427202-34217419(Top 61%)10695(Top 66%)10695(Top 190%)
24M24.00 mi1.00 mi9070-3107349-1477349-14715411(Top 54%)9762(Top 61%)9762(Top 173%)
40K24.85 mi0.85 mi9511-4417550-2017550-20118321(Top 65%)10981(Top 68%)10981(Top 195%)
25.2M25.20 mi0.35 mi9775-2647661-1117661-11120932(Top 74%)12240(Top 76%)12240(Top 217%)
Finish26.22 mi1.02 mi10466-6917988-3277988-32722584(Top 80%)13065(Top 81%)13065(Top 232%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21story building
+97ft-345ft

Overall

6537

Males

5899

M18-39

5899

5K→10K

3.1 - 6.2 mi

Top 22%
×5story building
+79ft-138ft

Overall

6195

Males

5647

M18-39

5647

10K→15K

6.2 - 9.3 mi

Top 23%
×3story building
+67ft-78ft

Overall

6537

Males

5899

M18-39

5899

15K→20K

9.3 - 12.4 mi

Top 26%
×5story building
+106ft-86ft

Overall

7412

Males

6499

M18-39

6499

20K→Half

12.4 - 13.1 mi

Top 26%
×2story building
+19ft-37ft

Overall

7324

Males

6466

M18-39

6466

Half→25K

13.1 - 15.5 mi

Top 25%
×4story building
+66ft-88ft

Overall

7072

Males

6174

M18-39

6174

25K→30K

15.5 - 18.6 mi

Top 34%
×9story building
+181ft-148ft

Overall

9676

Males

7522

M18-39

7522

30K→20M

18.6 - 20.0 mi

Top 49%
×5story building
+64ft-50ft

Overall

13836

Males

9359

M18-39

9359

20M→21M

20.0 - 21.0 mi

Top 44%
×8story building
+106ft-24ft

Overall

12468

Males

8586

M18-39

8586

21M→35K

21.0 - 21.8 mi

Top 64%
×7story building
+17ft-86ft

Overall

18295

Males

11165

M18-39

11165

35K→23M

21.8 - 23.0 mi

Top 61%
×5story building
+23ft-63ft

Overall

17419

Males

10695

M18-39

10695

23M→24M

23.0 - 24.0 mi

Top 54%
×6story building
+12ft-82ft

Overall

15411

Males

9762

M18-39

9762

24M→40K

24.0 - 24.9 mi

Top 65%
×1story
+6ft-20ft

Overall

18321

Males

10981

M18-39

10981

40K→25.2M

24.9 - 25.2 mi

Top 74%
×1story
+13ft-16ft

Overall

20932

Males

12240

M18-39

12240

25.2M→Finish

25.2 - 26.2 mi

Top 80%
×2story building
+22ft-21ft

Overall

22584

Males

13065

M18-39

13065

Passing Analysis

Category:
Athletes Passed
977
Passed By
4617
Net Change
-3642
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6824
5K → 10K36869+299#6824#6525
10K → 15K174139+35#6525#6490
15K → 20K54340-286#6490#6776
20K → Half1749-32#6776#6808
Half → 25K124120+4#6808#6804
25K → 30K88437-349#6804#7153
30K → 20M34403-369#7153#7522
20M → 21M40250-210#7522#7732
21M → 35K12400-388#7732#8120
35K → 23M25665-640#8120#8760
23M → 24M16326-310#8760#9070
24M → 40K16457-441#9070#9511
40K → 25.2M4268-264#9511#9775
25.2M → Finish5694-691#9775#10466
TOTALS9774617-3642
📊

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