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BOSTON MARATHON 2025

Yui Chit Daniel Chan

Bib: 28970•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
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
7:48/mi
24:14
↑ 97↓ 3451.5%
10K· 6.21 mi
7:50/mi
48:33
↑ 79↓ 1380.4%
15K· 9.32 mi
7:56/mi
1:13:11
↑ 67↓ 78
20K· 12.43 mi
7:58/mi
1:37:56
↑ 106↓ 860.1%
Half· 13.11 mi
7:56/mi
1:43:21
↑ 19↓ 370.5%
25K· 15.53 mi
8:17/mi
2:03:26
↑ 66↓ 880.2%
30K· 18.64 mi
8:39/mi
2:30:19
↑ 181↓ 1480.2%
20M
8:45/mi
2:42:13
↑ 64↓ 500.2%
21M
9:21/mi
2:51:34
↑ 106↓ 241.6%
35K· 21.75 mi
8:20/mi
2:57:48
↑ 17↓ 861.7%
23M
8:58/mi
3:09:01
↑ 23↓ 630.6%
24M
8:55/mi
3:17:56
↓ 821.3%
40K· 24.85 mi
8:57/mi
3:25:35
↓ 200.3%
25.2M
10:06/mi
3:29:04
↑ 13↓ 160.2%
Finish· 26.22 mi
8:45/mi
3:37:59
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:21
Pace7:53 /mi
2nd Half
Distance13.11 mi
Time1:54:38
Pace8:45 /mi
📊Positive Split: 10.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:42:4224:147:4824:14
7:48
-
10K
6.21 mi12:07:0148:337:4924:19
7:50
+0:02
15K
9.32 mi12:31:391:13:117:5124:38
7:56
+0:06
20K
12.43 mi12:56:241:37:567:5324:45
7:58
+0:02
Half
13.11 mi13:01:491:43:217:535:25
7:56
-0:02
25K
15.53 mi13:21:542:03:267:5720:05
8:17
+0:21
30K
18.64 mi13:48:472:30:198:0426:53
8:39
+0:22
20M
20.00 mi14:00:412:42:138:0711:54
8:45
+0:06
21M
21.00 mi14:10:022:51:348:109:21
9:21
+0:36
35K
21.75 mi14:16:162:57:488:116:14
8:20
-1:01
23M
23.00 mi14:27:293:09:018:1311:13
8:58
+0:38
24M
24.00 mi14:36:243:17:568:158:55
8:55
-0:03
40K
24.85 mi14:44:033:25:358:167:39
8:57
+0:02
25.2M
25.20 mi14:47:323:29:048:183:29
10:06
+1:09
Finish
26.22 mi14:56:273:37:598:198:55
8:45
-1:21

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

7:48 /mi

Average Pace

8:19 /mi

Slowest Pace

10:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:09:40

59% of race

Time at Steady Pace

1:04:16

29% of race

Time at Slower Pace

24:03

11% of race

Average Pace: 8:19 /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 mi11:42:4224:147:4824:14
7:48
#14798
10K
6.21 mi12:07:0148:337:4924:19
7:50
#14892
15K
9.32 mi12:31:391:13:117:5124:38
7:56
#15093
20K
12.43 mi12:56:241:37:567:5324:45
7:58
#14915
Half
13.11 mi13:01:491:43:217:535:25
7:56
#14950
25K
15.53 mi13:21:542:03:267:5720:05
8:17
#15124
30K
18.64 mi13:48:472:30:198:0426:53
8:39
#15237
20M
20.00 mi14:00:412:42:138:0711:54
8:45
#15229
21M
21.00 mi14:10:022:51:348:109:21
9:21
#15173
35K
21.75 mi14:16:162:57:488:116:14
8:20
#15120
23M
23.00 mi14:27:293:09:018:1311:13
8:58
#15159
24M
24.00 mi14:36:243:17:568:158:55
8:55
#15242
40K
24.85 mi14:44:033:25:358:167:39
8:57
#15250
25.2M
25.20 mi14:47:323:29:048:183:29
10:06
#15286
Finish
26.22 mi14:56:273:37:598:198:55
8:45
#15374
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi14798103451034515455(Top 54%)10573(Top 66%)10573(Top 187%)
10K6.21 mi3.10 mi14892-9410361-1610361-1615054(Top 53%)10445(Top 65%)10445(Top 185%)
15K9.32 mi3.11 mi15093-20110438-7710438-7715455(Top 54%)10573(Top 66%)10573(Top 187%)
20K12.43 mi3.11 mi14915+17810332+10610332+10614649(Top 52%)10157(Top 63%)10157(Top 180%)
Half13.11 mi0.68 mi14950-3510343-1110343-1115361(Top 54%)10498(Top 65%)10498(Top 186%)
25K15.53 mi2.42 mi15124-17410402-5910402-5915796(Top 56%)10559(Top 66%)10559(Top 187%)
30K18.64 mi3.11 mi15237-11310401+110401+115713(Top 55%)10380(Top 64%)10380(Top 184%)
20M20.00 mi1.36 mi15229+810361+4010361+4015400(Top 54%)10094(Top 63%)10094(Top 179%)
21M21.00 mi1.00 mi15173+5610309+5210309+5215375(Top 54%)9947(Top 62%)9947(Top 176%)
35K21.75 mi0.75 mi15120+5310270+3910270+3914457(Top 51%)9489(Top 59%)9489(Top 168%)
23M23.00 mi1.25 mi15159-3910256+1410256+1416012(Top 56%)10072(Top 63%)10072(Top 179%)
24M24.00 mi1.00 mi15242-8310254+210254+216904(Top 60%)10412(Top 65%)10412(Top 185%)
40K24.85 mi0.85 mi15250-810221+3310221+3315983(Top 56%)9909(Top 62%)9909(Top 176%)
25.2M25.20 mi0.35 mi15286-3610228-710228-717408(Top 61%)10548(Top 65%)10548(Top 187%)
Finish26.22 mi1.02 mi15374-8810241-1310241-1317749(Top 62%)10744(Top 67%)10744(Top 190%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21story building
+97ft-345ft

Overall

15455

Males

10573

M18-39

10573

5K→10K

3.1 - 6.2 mi

Top 53%
×5story building
+79ft-138ft

Overall

15054

Males

10445

M18-39

10445

10K→15K

6.2 - 9.3 mi

Top 54%
×3story building
+67ft-78ft

Overall

15455

Males

10573

M18-39

10573

15K→20K

9.3 - 12.4 mi

Top 52%
×5story building
+106ft-86ft

Overall

14649

Males

10157

M18-39

10157

20K→Half

12.4 - 13.1 mi

Top 54%
×2story building
+19ft-37ft

Overall

15361

Males

10498

M18-39

10498

Half→25K

13.1 - 15.5 mi

Top 56%
×4story building
+66ft-88ft

Overall

15796

Males

10559

M18-39

10559

25K→30K

15.5 - 18.6 mi

Top 55%
×9story building
+181ft-148ft

Overall

15713

Males

10380

M18-39

10380

30K→20M

18.6 - 20.0 mi

Top 54%
×5story building
+64ft-50ft

Overall

15400

Males

10094

M18-39

10094

20M→21M

20.0 - 21.0 mi

Top 54%
×8story building
+106ft-24ft

Overall

15375

Males

9947

M18-39

9947

21M→35K

21.0 - 21.8 mi

Top 51%
×7story building
+17ft-86ft

Overall

14457

Males

9489

M18-39

9489

35K→23M

21.8 - 23.0 mi

Top 56%
×5story building
+23ft-63ft

Overall

16012

Males

10072

M18-39

10072

23M→24M

23.0 - 24.0 mi

Top 60%
×6story building
+12ft-82ft

Overall

16904

Males

10412

M18-39

10412

24M→40K

24.0 - 24.9 mi

Top 56%
×1story
+6ft-20ft

Overall

15983

Males

9909

M18-39

9909

40K→25.2M

24.9 - 25.2 mi

Top 61%
×1story
+13ft-16ft

Overall

17408

Males

10548

M18-39

10548

25.2M→Finish

25.2 - 26.2 mi

Top 62%
×2story building
+22ft-21ft

Overall

17749

Males

10744

M18-39

10744

Passing Analysis

Category:
Athletes Passed
1661
Passed By
2237
Net Change
-576
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14798
5K → 10K245339-94#14798#14892
10K → 15K142343-201#14892#15093
15K → 20K298120+178#15093#14915
20K → Half2358-35#14915#14950
Half → 25K124298-174#14950#15124
25K → 30K211324-113#15124#15237
30K → 20M119111+8#15237#15229
20M → 21M13680+56#15229#15173
21M → 35K8633+53#15173#15120
35K → 23M94133-39#15120#15159
23M → 24M57140-83#15159#15242
24M → 40K7078-8#15242#15250
40K → 25.2M2359-36#15250#15286
25.2M → Finish33121-88#15286#15374
TOTALS16612237-576
📊

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