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BOSTON MARATHON 2025

Jiandong Yi

Bib: 14295•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 40%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 43%
Division (M55-59)
#0 / 1648
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
7:35/mi
23:33
↑ 97↓ 3451.5%
10K· 6.21 mi
7:32/mi
46:57
↑ 79↓ 1380.4%
15K· 9.32 mi
7:34/mi
1:10:27
↑ 67↓ 78
20K· 12.43 mi
7:39/mi
1:34:14
↑ 106↓ 860.1%
Half· 13.11 mi
7:30/mi
1:39:21
↑ 19↓ 370.5%
25K· 15.53 mi
7:40/mi
1:57:57
↑ 66↓ 880.2%
30K· 18.64 mi
8:03/mi
2:22:58
↑ 181↓ 1480.2%
20M
8:03/mi
2:33:54
↑ 64↓ 500.2%
21M
8:28/mi
2:42:22
↑ 106↓ 241.6%
35K· 21.75 mi
8:00/mi
2:48:21
↑ 17↓ 861.7%
23M
8:06/mi
2:58:30
↑ 23↓ 630.6%
24M
7:48/mi
3:06:18
↓ 821.3%
40K· 24.85 mi
7:54/mi
3:13:03
↓ 200.3%
25.2M
9:02/mi
3:16:10
↑ 13↓ 160.2%
Finish· 26.22 mi
8:03/mi
3:24:22
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:21
Pace7:35 /mi
2nd Half
Distance13.11 mi
Time1:45:01
Pace8:01 /mi
📊Positive Split: 5.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:0123:337:3523:33
7:35
-
10K
6.21 mi11:17:2546:577:3323:24
7:32
-0:03
15K
9.32 mi11:40:551:10:277:3423:30
7:34
+0:02
20K
12.43 mi12:04:421:34:147:3523:47
7:39
+0:05
Half
13.11 mi12:09:491:39:217:355:07
7:30
-0:09
25K
15.53 mi12:28:251:57:577:3618:36
7:40
+0:10
30K
18.64 mi12:53:262:22:587:4025:01
8:03
+0:23
20M
20.00 mi13:04:222:33:547:4210:56
8:03
0:00
21M
21.00 mi13:12:502:42:227:448:28
8:28
+0:25
35K
21.75 mi13:18:492:48:217:445:59
8:00
-0:28
23M
23.00 mi13:28:582:58:307:4610:09
8:06
+0:06
24M
24.00 mi13:36:463:06:187:467:48
7:48
-0:18
40K
24.85 mi13:43:313:13:037:466:45
7:54
+0:06
25.2M
25.20 mi13:46:383:16:107:473:07
9:02
+1:08
Finish
26.22 mi13:54:503:24:227:488:12
8:03
-0:59

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

7:30 /mi

Average Pace

7:48 /mi

Slowest Pace

9:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:57:57

58% of race

Time at Steady Pace

1:04:41

32% of race

Time at Slower Pace

21:44

11% of race

Average Pace: 7:48 /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 mi10:54:0123:337:3523:33
7:35
#12926
10K
6.21 mi11:17:2546:577:3323:24
7:32
#12624
15K
9.32 mi11:40:551:10:277:3423:30
7:34
#12495
20K
12.43 mi12:04:421:34:147:3523:47
7:39
#12337
Half
13.11 mi12:09:491:39:217:355:07
7:30
#12315
25K
15.53 mi12:28:251:57:577:3618:36
7:40
#12109
30K
18.64 mi12:53:262:22:587:4025:01
8:03
#11987
20M
20.00 mi13:04:222:33:547:4210:56
8:03
#11857
21M
21.00 mi13:12:502:42:227:448:28
8:28
#11743
35K
21.75 mi13:18:492:48:217:445:59
8:00
#11744
23M
23.00 mi13:28:582:58:307:4610:09
8:06
#11650
24M
24.00 mi13:36:463:06:187:467:48
7:48
#11521
40K
24.85 mi13:43:313:13:037:466:45
7:54
#11409
25.2M
25.20 mi13:46:383:16:107:473:07
9:02
#11398
Finish
26.22 mi13:54:503:24:227:488:12
8:03
#11463
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi129269611961112281(Top 43%)9189(Top 57%)9189(Top 558%)
10K6.21 mi3.10 mi12624+3029446+1659446+16512376(Top 44%)9319(Top 58%)9319(Top 565%)
15K9.32 mi3.11 mi12495+1299357+899357+8912281(Top 43%)9189(Top 57%)9189(Top 558%)
20K12.43 mi3.11 mi12337+1589250+1079250+10711983(Top 42%)8965(Top 56%)8965(Top 544%)
Half13.11 mi0.68 mi12315+229235+159235+1511637(Top 41%)8847(Top 55%)8847(Top 537%)
25K15.53 mi2.42 mi12109+2069103+1329103+13211311(Top 40%)8533(Top 53%)8533(Top 518%)
30K18.64 mi3.11 mi11987+1228970+1338970+13311751(Top 41%)8556(Top 53%)8556(Top 519%)
20M20.00 mi1.36 mi11857+1308873+978873+9710728(Top 38%)7905(Top 49%)7905(Top 480%)
21M21.00 mi1.00 mi11743+1148781+928781+9210233(Top 36%)7483(Top 46%)7483(Top 454%)
35K21.75 mi0.75 mi11744-18762+198762+1912222(Top 43%)8427(Top 52%)8427(Top 511%)
23M23.00 mi1.25 mi11650+948669+938669+9310782(Top 38%)7634(Top 47%)7634(Top 463%)
24M24.00 mi1.00 mi11521+1298565+1048565+1049797(Top 34%)7068(Top 44%)7068(Top 429%)
40K24.85 mi0.85 mi11409+1128472+938472+939420(Top 33%)6760(Top 42%)6760(Top 410%)
25.2M25.20 mi0.35 mi11398+118446+268446+2611957(Top 42%)7968(Top 49%)7968(Top 483%)
Finish26.22 mi1.02 mi11463-658447-18447-113177(Top 46%)8600(Top 53%)8600(Top 522%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 43%
×21story building
+97ft-345ft

Overall

12281

Males

9189

M55-59

9189

5K→10K

3.1 - 6.2 mi

Top 44%
×5story building
+79ft-138ft

Overall

12376

Males

9319

M55-59

9319

10K→15K

6.2 - 9.3 mi

Top 43%
×3story building
+67ft-78ft

Overall

12281

Males

9189

M55-59

9189

15K→20K

9.3 - 12.4 mi

Top 42%
×5story building
+106ft-86ft

Overall

11983

Males

8965

M55-59

8965

20K→Half

12.4 - 13.1 mi

Top 41%
×2story building
+19ft-37ft

Overall

11637

Males

8847

M55-59

8847

Half→25K

13.1 - 15.5 mi

Top 40%
×4story building
+66ft-88ft

Overall

11311

Males

8533

M55-59

8533

25K→30K

15.5 - 18.6 mi

Top 41%
×9story building
+181ft-148ft

Overall

11751

Males

8556

M55-59

8556

30K→20M

18.6 - 20.0 mi

Top 38%
×5story building
+64ft-50ft

Overall

10728

Males

7905

M55-59

7905

20M→21M

20.0 - 21.0 mi

Top 36%
×8story building
+106ft-24ft

Overall

10233

Males

7483

M55-59

7483

21M→35K

21.0 - 21.8 mi

Top 43%
×7story building
+17ft-86ft

Overall

12222

Males

8427

M55-59

8427

35K→23M

21.8 - 23.0 mi

Top 38%
×5story building
+23ft-63ft

Overall

10782

Males

7634

M55-59

7634

23M→24M

23.0 - 24.0 mi

Top 34%
×6story building
+12ft-82ft

Overall

9797

Males

7068

M55-59

7068

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

9420

Males

6760

M55-59

6760

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11957

Males

7968

M55-59

7968

25.2M→Finish

25.2 - 26.2 mi

Top 46%
×2story building
+22ft-21ft

Overall

13177

Males

8600

M55-59

8600

Passing Analysis

Category:
Athletes Passed
2528
Passed By
1065
Net Change
+1463
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12926
5K → 10K459157+302#12926#12624
10K → 15K251122+129#12624#12495
15K → 20K268110+158#12495#12337
20K → Half4321+22#12337#12315
Half → 25K25751+206#12315#12109
25K → 30K302180+122#12109#11987
30K → 20M18454+130#11987#11857
20M → 21M15642+114#11857#11743
21M → 35K5859-1#11743#11744
35K → 23M15056+94#11744#11650
23M → 24M16031+129#11650#11521
24M → 40K14129+112#11521#11409
40K → 25.2M4837+11#11409#11398
25.2M → Finish51116-65#11398#11463
TOTALS25281065+1463
📊

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