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BOSTON MARATHON 2025

Zhen Liu

Bib: 12485•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M50-54)
#0 / 1996
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
8:30/mi
26:26
↑ 97↓ 3451.5%
10K· 6.21 mi
8:59/mi
54:21
↑ 79↓ 1380.4%
15K· 9.32 mi
9:06/mi
1:22:37
↑ 67↓ 78
20K· 12.43 mi
9:33/mi
1:52:17
↑ 106↓ 860.1%
Half· 13.11 mi
9:26/mi
1:58:43
↑ 19↓ 370.5%
25K· 15.53 mi
9:45/mi
2:22:22
↑ 66↓ 880.2%
30K· 18.64 mi
10:11/mi
2:54:00
↑ 181↓ 1480.2%
20M
10:28/mi
3:08:14
↑ 64↓ 500.2%
21M
11:29/mi
3:19:43
↑ 106↓ 241.6%
35K· 21.75 mi
9:28/mi
3:26:48
↑ 17↓ 861.7%
23M
10:14/mi
3:39:37
↑ 23↓ 630.6%
24M
10:15/mi
3:49:52
↓ 821.3%
40K· 24.85 mi
10:20/mi
3:58:42
↓ 200.3%
25.2M
11:59/mi
4:02:50
↑ 13↓ 160.2%
Finish· 26.22 mi
10:17/mi
4:13:19
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:58:43
Pace9:03 /mi
2nd Half
Distance13.11 mi
Time2:14:36
Pace10:16 /mi
📊Positive Split: 13.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:3726:268:3026:26
8:30
-
10K
6.21 mi11:46:3254:218:4527:55
8:59
+0:29
15K
9.32 mi12:14:481:22:378:5228:16
9:06
+0:07
20K
12.43 mi12:44:281:52:179:0229:40
9:33
+0:27
Half
13.11 mi12:50:541:58:439:036:26
9:26
-0:07
25K
15.53 mi13:14:332:22:229:1023:39
9:45
+0:19
30K
18.64 mi13:46:112:54:009:2031:38
10:11
+0:26
20M
20.00 mi14:00:253:08:149:2514:14
10:28
+0:17
21M
21.00 mi14:11:543:19:439:3111:29
11:29
+1:01
35K
21.75 mi14:18:593:26:489:317:05
9:28
-2:01
23M
23.00 mi14:31:483:39:379:3312:49
10:14
+0:46
24M
24.00 mi14:42:033:49:529:3510:15
10:15
+0:01
40K
24.85 mi14:50:533:58:429:368:50
10:20
+0:05
25.2M
25.20 mi14:55:014:02:509:384:08
11:59
+1:39
Finish
26.22 mi15:05:304:13:199:4010:29
10:17
-1:42

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

8:30 /mi

Average Pace

9:40 /mi

Slowest Pace

11:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:05:48

50% of race

Time at Steady Pace

1:51:54

44% of race

Time at Slower Pace

15:37

6% of race

Average Pace: 9:40 /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 mi11:18:3726:268:3026:26
8:30
#19922
10K
6.21 mi11:46:3254:218:4527:55
8:59
#21144
15K
9.32 mi12:14:481:22:378:5228:16
9:06
#21611
20K
12.43 mi12:44:281:52:179:0229:40
9:33
#22077
Half
13.11 mi12:50:541:58:439:036:26
9:26
#22166
25K
15.53 mi13:14:332:22:229:1023:39
9:45
#22307
30K
18.64 mi13:46:112:54:009:2031:38
10:11
#22284
20M
20.00 mi14:00:253:08:149:2514:14
10:28
#22287
21M
21.00 mi14:11:543:19:439:3111:29
11:29
#22288
35K
21.75 mi14:18:593:26:489:317:05
9:28
#22212
23M
23.00 mi14:31:483:39:379:3312:49
10:14
#22123
24M
24.00 mi14:42:033:49:529:3510:15
10:15
#22112
40K
24.85 mi14:50:533:58:429:368:50
10:20
#22088
25.2M
25.20 mi14:55:014:02:509:384:08
11:59
#22110
Finish
26.22 mi15:05:304:13:199:4010:29
10:17
#22151
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi19922124111241122445(Top 79%)13585(Top 84%)13585(Top 681%)
10K6.21 mi3.10 mi21144-122212959-54812959-54822326(Top 79%)13487(Top 84%)13487(Top 676%)
15K9.32 mi3.11 mi21611-46713182-22313182-22322445(Top 79%)13585(Top 84%)13585(Top 681%)
20K12.43 mi3.11 mi22077-46613378-19613378-19623045(Top 81%)13810(Top 86%)13810(Top 692%)
Half13.11 mi0.68 mi22166-8913419-4113419-4123330(Top 82%)13930(Top 86%)13930(Top 698%)
25K15.53 mi2.42 mi22307-14113484-6513484-6522645(Top 80%)13577(Top 84%)13577(Top 680%)
30K18.64 mi3.11 mi22284+2313438+4613438+4622139(Top 78%)13237(Top 82%)13237(Top 663%)
20M20.00 mi1.36 mi22287-313418+2013418+2022333(Top 79%)13198(Top 82%)13198(Top 661%)
21M21.00 mi1.00 mi22288-113402+1613402+1622582(Top 80%)13238(Top 82%)13238(Top 663%)
35K21.75 mi0.75 mi22212+7613352+5013352+5020219(Top 71%)12082(Top 75%)12082(Top 605%)
23M23.00 mi1.25 mi22123+8913275+7713275+7721240(Top 75%)12511(Top 78%)12511(Top 627%)
24M24.00 mi1.00 mi22112+1113254+2113254+2122079(Top 78%)12848(Top 80%)12848(Top 644%)
40K24.85 mi0.85 mi22088+2413223+3113223+3121466(Top 76%)12506(Top 78%)12506(Top 627%)
25.2M25.20 mi0.35 mi22110-2213225-213225-223181(Top 82%)13368(Top 83%)13368(Top 670%)
Finish26.22 mi1.02 mi22151-4113228-313228-323752(Top 84%)13642(Top 85%)13642(Top 683%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 79%
×21story building
+97ft-345ft

Overall

22445

Males

13585

M50-54

13585

5K→10K

3.1 - 6.2 mi

Top 79%
×5story building
+79ft-138ft

Overall

22326

Males

13487

M50-54

13487

10K→15K

6.2 - 9.3 mi

Top 79%
×3story building
+67ft-78ft

Overall

22445

Males

13585

M50-54

13585

15K→20K

9.3 - 12.4 mi

Top 81%
×5story building
+106ft-86ft

Overall

23045

Males

13810

M50-54

13810

20K→Half

12.4 - 13.1 mi

Top 82%
×2story building
+19ft-37ft

Overall

23330

Males

13930

M50-54

13930

Half→25K

13.1 - 15.5 mi

Top 80%
×4story building
+66ft-88ft

Overall

22645

Males

13577

M50-54

13577

25K→30K

15.5 - 18.6 mi

Top 78%
×9story building
+181ft-148ft

Overall

22139

Males

13237

M50-54

13237

30K→20M

18.6 - 20.0 mi

Top 79%
×5story building
+64ft-50ft

Overall

22333

Males

13198

M50-54

13198

20M→21M

20.0 - 21.0 mi

Top 80%
×8story building
+106ft-24ft

Overall

22582

Males

13238

M50-54

13238

21M→35K

21.0 - 21.8 mi

Top 71%
×7story building
+17ft-86ft

Overall

20219

Males

12082

M50-54

12082

35K→23M

21.8 - 23.0 mi

Top 75%
×5story building
+23ft-63ft

Overall

21240

Males

12511

M50-54

12511

23M→24M

23.0 - 24.0 mi

Top 78%
×6story building
+12ft-82ft

Overall

22079

Males

12848

M50-54

12848

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

21466

Males

12506

M50-54

12506

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

23181

Males

13368

M50-54

13368

25.2M→Finish

25.2 - 26.2 mi

Top 84%
×2story building
+22ft-21ft

Overall

23752

Males

13642

M50-54

13642

Passing Analysis

Category:
Athletes Passed
1036
Passed By
3265
Net Change
-2229
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19922
5K → 10K341256-1222#19922#21144
10K → 15K88555-467#21144#21611
15K → 20K85551-466#21611#22077
20K → Half796-89#22077#22166
Half → 25K95236-141#22166#22307
25K → 30K201178+23#22307#22284
30K → 20M7174-3#22284#22287
20M → 21M8182-1#22287#22288
21M → 35K848+76#22288#22212
35K → 23M12738+89#22212#22123
23M → 24M4635+11#22123#22112
24M → 40K6137+24#22112#22088
40K → 25.2M1840-22#22088#22110
25.2M → Finish3879-41#22110#22151
TOTALS10363265-2229
📊

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