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BOSTON MARATHON 2025

Dehong Liu

Bib: 14414•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 29%
Gender (Male)
#0 / 16105
Top 42%
Masters (Masters Men)
#0 / 10463
Top 29%
Division (M50-54)
#0 / 1996
Top 26%
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
7:13/mi
22:26
↑ 97↓ 3451.5%
10K· 6.21 mi
6:58/mi
44:06
↑ 79↓ 1380.4%
15K· 9.32 mi
7:08/mi
1:06:16
↑ 67↓ 78
20K· 12.43 mi
7:14/mi
1:28:44
↑ 106↓ 860.1%
Half· 13.11 mi
7:01/mi
1:33:31
↑ 19↓ 370.5%
25K· 15.53 mi
7:18/mi
1:51:13
↑ 66↓ 880.2%
30K· 18.64 mi
7:46/mi
2:15:20
↑ 181↓ 1480.2%
20M
7:42/mi
2:25:48
↑ 64↓ 500.2%
21M
8:12/mi
2:34:00
↑ 106↓ 241.6%
35K· 21.75 mi
7:12/mi
2:39:23
↑ 17↓ 861.7%
23M
7:42/mi
2:49:01
↑ 23↓ 630.6%
24M
7:47/mi
2:56:48
↓ 821.3%
40K· 24.85 mi
7:38/mi
3:03:20
↓ 200.3%
25.2M
8:07/mi
3:06:08
↑ 13↓ 160.2%
Finish· 26.22 mi
7:30/mi
3:13:47
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:33:31
Pace7:08 /mi
2nd Half
Distance13.11 mi
Time1:40:16
Pace7:39 /mi
📊Positive Split: 7.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:12:5722:267:1322:26
7:13
-
10K
6.21 mi11:34:3744:067:0621:40
6:58
-0:15
15K
9.32 mi11:56:471:06:167:0722:10
7:08
+0:10
20K
12.43 mi12:19:151:28:447:0822:28
7:14
+0:06
Half
13.11 mi12:24:021:33:317:084:47
7:01
-0:13
25K
15.53 mi12:41:441:51:137:1017:42
7:18
+0:17
30K
18.64 mi13:05:512:15:207:1624:07
7:46
+0:28
20M
20.00 mi13:16:192:25:487:1710:28
7:42
-0:04
21M
21.00 mi13:24:312:34:007:208:12
8:12
+0:30
35K
21.75 mi13:29:542:39:237:205:23
7:12
-1:00
23M
23.00 mi13:39:322:49:017:219:38
7:42
+0:30
24M
24.00 mi13:47:192:56:487:227:47
7:47
+0:05
40K
24.85 mi13:53:513:03:207:236:32
7:38
-0:09
25.2M
25.20 mi13:56:393:06:087:232:48
8:07
+0:29
Finish
26.22 mi14:04:183:13:477:247:39
7:30
-0:37

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

6:58 /mi

Average Pace

7:24 /mi

Slowest Pace

8:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:10:47

67% of race

Time at Steady Pace

1:03:00

33% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:23 /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 mi11:12:5722:267:1322:26
7:13
#9625
10K
6.21 mi11:34:3744:067:0621:40
6:58
#8617
15K
9.32 mi11:56:471:06:167:0722:10
7:08
#8558
20K
12.43 mi12:19:151:28:447:0822:28
7:14
#8458
Half
13.11 mi12:24:021:33:317:084:47
7:01
#8406
25K
15.53 mi12:41:441:51:137:1017:42
7:18
#8350
30K
18.64 mi13:05:512:15:207:1624:07
7:46
#8512
20M
20.00 mi13:16:192:25:487:1710:28
7:42
#8448
21M
21.00 mi13:24:312:34:007:208:12
8:12
#8401
35K
21.75 mi13:29:542:39:237:205:23
7:12
#8287
23M
23.00 mi13:39:322:49:017:219:38
7:42
#8214
24M
24.00 mi13:47:192:56:487:227:47
7:47
#8231
40K
24.85 mi13:53:513:03:207:236:32
7:38
#8179
25.2M
25.20 mi13:56:393:06:087:232:48
8:07
#8142
Finish
26.22 mi14:04:183:13:477:247:39
7:30
#8144
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi9625796479648576(Top 30%)7293(Top 45%)7293(Top 365%)
10K6.21 mi3.10 mi8617+10087368+5967368+5967755(Top 27%)6814(Top 42%)6814(Top 341%)
15K9.32 mi3.11 mi8558+597324+447324+448576(Top 30%)7293(Top 45%)7293(Top 365%)
20K12.43 mi3.11 mi8458+1007231+937231+938458(Top 30%)7134(Top 44%)7134(Top 357%)
Half13.11 mi0.68 mi8406+527195+367195+367659(Top 27%)6680(Top 41%)6680(Top 335%)
25K15.53 mi2.42 mi8350+567142+537142+538350(Top 29%)6965(Top 43%)6965(Top 349%)
30K18.64 mi3.11 mi8512-1627187-457187-459617(Top 34%)7484(Top 46%)7484(Top 375%)
20M20.00 mi1.36 mi8448+647118+697118+698342(Top 29%)6635(Top 41%)6635(Top 332%)
21M21.00 mi1.00 mi8401+477051+677051+678559(Top 30%)6567(Top 41%)6567(Top 329%)
35K21.75 mi0.75 mi8287+1146964+876964+876575(Top 23%)5441(Top 34%)5441(Top 273%)
23M23.00 mi1.25 mi8214+736877+876877+877854(Top 28%)6076(Top 38%)6076(Top 304%)
24M24.00 mi1.00 mi8231-176849+286849+289656(Top 34%)6988(Top 43%)6988(Top 350%)
40K24.85 mi0.85 mi8179+526789+606789+607684(Top 27%)5822(Top 36%)5822(Top 292%)
25.2M25.20 mi0.35 mi8142+376753+366753+366592(Top 23%)5121(Top 32%)5121(Top 257%)
Finish26.22 mi1.02 mi8144-26713+406713+409207(Top 32%)6552(Top 41%)6552(Top 328%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 30%
×21story building
+97ft-345ft

Overall

8576

Males

7293

M50-54

7293

5K→10K

3.1 - 6.2 mi

Top 27%
×5story building
+79ft-138ft

Overall

7755

Males

6814

M50-54

6814

10K→15K

6.2 - 9.3 mi

Top 30%
×3story building
+67ft-78ft

Overall

8576

Males

7293

M50-54

7293

15K→20K

9.3 - 12.4 mi

Top 30%
×5story building
+106ft-86ft

Overall

8458

Males

7134

M50-54

7134

20K→Half

12.4 - 13.1 mi

Top 27%
×2story building
+19ft-37ft

Overall

7659

Males

6680

M50-54

6680

Half→25K

13.1 - 15.5 mi

Top 29%
×4story building
+66ft-88ft

Overall

8350

Males

6965

M50-54

6965

25K→30K

15.5 - 18.6 mi

Top 34%
×9story building
+181ft-148ft

Overall

9617

Males

7484

M50-54

7484

30K→20M

18.6 - 20.0 mi

Top 29%
×5story building
+64ft-50ft

Overall

8342

Males

6635

M50-54

6635

20M→21M

20.0 - 21.0 mi

Top 30%
×8story building
+106ft-24ft

Overall

8559

Males

6567

M50-54

6567

21M→35K

21.0 - 21.8 mi

Top 23%
×7story building
+17ft-86ft

Overall

6575

Males

5441

M50-54

5441

35K→23M

21.8 - 23.0 mi

Top 28%
×5story building
+23ft-63ft

Overall

7854

Males

6076

M50-54

6076

23M→24M

23.0 - 24.0 mi

Top 34%
×6story building
+12ft-82ft

Overall

9656

Males

6988

M50-54

6988

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7684

Males

5822

M50-54

5822

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

6592

Males

5121

M50-54

5121

25.2M→Finish

25.2 - 26.2 mi

Top 32%
×2story building
+22ft-21ft

Overall

9207

Males

6552

M50-54

6552

Passing Analysis

Category:
Athletes Passed
2588
Passed By
1107
Net Change
+1481
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9625
5K → 10K102214+1008#9625#8617
10K → 15K195136+59#8617#8558
15K → 20K213113+100#8558#8458
20K → Half597+52#8458#8406
Half → 25K14791+56#8406#8350
25K → 30K163325-162#8350#8512
30K → 20M12662+64#8512#8448
20M → 21M11366+47#8448#8401
21M → 35K1228+114#8401#8287
35K → 23M14269+73#8287#8214
23M → 24M7794-17#8214#8231
24M → 40K8836+52#8231#8179
40K → 25.2M4710+37#8179#8142
25.2M → Finish7476-2#8142#8144
TOTALS25881107+1481
📊

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