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BOSTON MARATHON 2025

Teyi Lien

Bib: 12326•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 36%
Gender (Male)
#0 / 16105
Top 49%
Masters (Masters Men)
#0 / 10463
Top 38%
Division (M45-49)
#0 / 2386
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
7:48/mi
24:14
↑ 97↓ 3451.5%
10K· 6.21 mi
7:44/mi
48:16
↑ 79↓ 1380.4%
15K· 9.32 mi
7:38/mi
1:11:58
↑ 67↓ 78
20K· 12.43 mi
7:38/mi
1:35:41
↑ 106↓ 860.1%
Half· 13.11 mi
7:34/mi
1:40:51
↑ 19↓ 370.5%
25K· 15.53 mi
7:38/mi
1:59:21
↑ 66↓ 880.2%
30K· 18.64 mi
7:48/mi
2:23:35
↑ 181↓ 1480.2%
20M
7:50/mi
2:34:14
↑ 64↓ 500.2%
21M
8:03/mi
2:42:17
↑ 106↓ 241.6%
35K· 21.75 mi
7:29/mi
2:47:53
↑ 17↓ 861.7%
23M
7:34/mi
2:57:21
↑ 23↓ 630.6%
24M
7:20/mi
3:04:41
↓ 821.3%
40K· 24.85 mi
7:19/mi
3:10:56
↓ 200.3%
25.2M
7:47/mi
3:13:37
↑ 13↓ 160.2%
Finish· 26.22 mi
6:50/mi
3:20:35
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:40:51
Pace7:42 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:39:44
Pace7:36 /mi
📊Negative Split: 1.1% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:2724:147:4824:14
7:48
-
10K
6.21 mi11:16:2948:167:4624:02
7:44
-0:04
15K
9.32 mi11:40:111:11:587:4323:42
7:38
-0:06
20K
12.43 mi12:03:541:35:417:4223:43
7:38
0:00
Half
13.11 mi12:09:041:40:517:425:10
7:34
-0:04
25K
15.53 mi12:27:341:59:217:4118:30
7:38
+0:04
30K
18.64 mi12:51:482:23:357:4224:14
7:48
+0:10
20M
20.00 mi13:02:272:34:147:4310:39
7:50
+0:02
21M
21.00 mi13:10:302:42:177:448:03
8:03
+0:13
35K
21.75 mi13:16:062:47:537:435:36
7:29
-0:34
23M
23.00 mi13:25:342:57:217:439:28
7:34
+0:05
24M
24.00 mi13:32:543:04:417:427:20
7:20
-0:14
40K
24.85 mi13:39:093:10:567:416:15
7:19
-0:01
25.2M
25.20 mi13:41:503:13:377:412:41
7:47
+0:28
Finish
26.22 mi13:48:483:20:357:396:58
6:50
-0:57

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

6:50 /mi

Average Pace

7:39 /mi

Slowest Pace

8:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

26:09

13% of race

Time at Steady Pace

2:54:26

87% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:39 /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 mi10:52:2724:147:4824:14
7:48
#14788
10K
6.21 mi11:16:2948:167:4624:02
7:44
#14476
15K
9.32 mi11:40:111:11:587:4323:42
7:38
#13929
20K
12.43 mi12:03:541:35:417:4223:43
7:38
#13345
Half
13.11 mi12:09:041:40:517:425:10
7:34
#13286
25K
15.53 mi12:27:341:59:217:4118:30
7:38
#12876
30K
18.64 mi12:51:482:23:357:4224:14
7:48
#12287
20M
20.00 mi13:02:272:34:147:4310:39
7:50
#12010
21M
21.00 mi13:10:302:42:177:448:03
8:03
#11704
35K
21.75 mi13:16:062:47:537:435:36
7:29
#11568
23M
23.00 mi13:25:342:57:217:439:28
7:34
#11232
24M
24.00 mi13:32:543:04:417:427:20
7:20
#10969
40K
24.85 mi13:39:093:10:567:416:15
7:19
#10734
25.2M
25.20 mi13:41:503:13:377:412:41
7:47
#10592
Finish
26.22 mi13:48:483:20:357:396:58
6:50
#10313
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi14788103351033512833(Top 45%)9438(Top 59%)9438(Top 396%)
10K6.21 mi3.10 mi14476+31210214+12110214+12114187(Top 50%)10071(Top 63%)10071(Top 422%)
15K9.32 mi3.11 mi13929+5479958+2569958+25612833(Top 45%)9438(Top 59%)9438(Top 396%)
20K12.43 mi3.11 mi13345+5849675+2839675+28311814(Top 42%)8884(Top 55%)8884(Top 372%)
Half13.11 mi0.68 mi13286+599642+339642+3312255(Top 43%)9110(Top 57%)9110(Top 382%)
25K15.53 mi2.42 mi12876+4109434+2089434+20810975(Top 39%)8372(Top 52%)8372(Top 351%)
30K18.64 mi3.11 mi12287+5899104+3309104+3309929(Top 35%)7651(Top 48%)7651(Top 321%)
20M20.00 mi1.36 mi12010+2778938+1668938+1669275(Top 33%)7151(Top 44%)7151(Top 300%)
21M21.00 mi1.00 mi11704+3068760+1788760+1787648(Top 27%)6066(Top 38%)6066(Top 254%)
35K21.75 mi0.75 mi11568+1368666+948666+948513(Top 30%)6605(Top 41%)6605(Top 277%)
23M23.00 mi1.25 mi11232+3368465+2018465+2016995(Top 25%)5590(Top 35%)5590(Top 234%)
24M24.00 mi1.00 mi10969+2638301+1648301+1646619(Top 23%)5313(Top 33%)5313(Top 223%)
40K24.85 mi0.85 mi10734+2358163+1388163+1385712(Top 20%)4686(Top 29%)4686(Top 196%)
25.2M25.20 mi0.35 mi10592+1428082+818082+814818(Top 17%)4016(Top 25%)4016(Top 168%)
Finish26.22 mi1.02 mi10313+2797905+1777905+1774732(Top 17%)3956(Top 25%)3956(Top 166%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 45%
×21story building
+97ft-345ft

Overall

12833

Males

9438

M45-49

9438

5K→10K

3.1 - 6.2 mi

Top 50%
×5story building
+79ft-138ft

Overall

14187

Males

10071

M45-49

10071

10K→15K

6.2 - 9.3 mi

Top 45%
×3story building
+67ft-78ft

Overall

12833

Males

9438

M45-49

9438

15K→20K

9.3 - 12.4 mi

Top 42%
×5story building
+106ft-86ft

Overall

11814

Males

8884

M45-49

8884

20K→Half

12.4 - 13.1 mi

Top 43%
×2story building
+19ft-37ft

Overall

12255

Males

9110

M45-49

9110

Half→25K

13.1 - 15.5 mi

Top 39%
×4story building
+66ft-88ft

Overall

10975

Males

8372

M45-49

8372

25K→30K

15.5 - 18.6 mi

Top 35%
×9story building
+181ft-148ft

Overall

9929

Males

7651

M45-49

7651

30K→20M

18.6 - 20.0 mi

Top 33%
×5story building
+64ft-50ft

Overall

9275

Males

7151

M45-49

7151

20M→21M

20.0 - 21.0 mi

Top 27%
×8story building
+106ft-24ft

Overall

7648

Males

6066

M45-49

6066

21M→35K

21.0 - 21.8 mi

Top 30%
×7story building
+17ft-86ft

Overall

8513

Males

6605

M45-49

6605

35K→23M

21.8 - 23.0 mi

Top 25%
×5story building
+23ft-63ft

Overall

6995

Males

5590

M45-49

5590

23M→24M

23.0 - 24.0 mi

Top 23%
×6story building
+12ft-82ft

Overall

6619

Males

5313

M45-49

5313

24M→40K

24.0 - 24.9 mi

Top 20%
×1story
+6ft-20ft

Overall

5712

Males

4686

M45-49

4686

40K→25.2M

24.9 - 25.2 mi

Top 17%
×1story
+13ft-16ft

Overall

4818

Males

4016

M45-49

4016

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2story building
+22ft-21ft

Overall

4732

Males

3956

M45-49

3956

Passing Analysis

Category:
Athletes Passed
4755
Passed By
280
Net Change
+4475
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14788
5K → 10K473161+312#14788#14476
10K → 15K57225+547#14476#13929
15K → 20K59713+584#13929#13345
20K → Half6910+59#13345#13286
Half → 25K42818+410#13286#12876
25K → 30K60819+589#12876#12287
30K → 20M29013+277#12287#12010
20M → 21M3093+306#12010#11704
21M → 35K1448+136#11704#11568
35K → 23M3393+336#11568#11232
23M → 24M2630+263#11232#10969
24M → 40K2372+235#10969#10734
40K → 25.2M1442+142#10734#10592
25.2M → Finish2823+279#10592#10313
TOTALS4755280+4475
📊

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