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BOSTON MARATHON 2025

Jia Jun Mitchell Tan

Bib: 4003•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 13%
Gender (Male)
#0 / 16105
Top 21%
Division (M18-39)
#0 / 5642
Top 45%
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
6:21/mi
19:44
↑ 97↓ 3451.5%
10K· 6.21 mi
6:25/mi
39:39
↑ 79↓ 1380.4%
15K· 9.32 mi
6:25/mi
59:36
↑ 67↓ 78
20K· 12.43 mi
6:28/mi
1:19:41
↑ 106↓ 860.1%
Half· 13.11 mi
6:25/mi
1:24:04
↑ 19↓ 370.5%
25K· 15.53 mi
6:32/mi
1:39:54
↑ 66↓ 880.2%
30K· 18.64 mi
6:56/mi
2:01:25
↑ 181↓ 1480.2%
20M
7:05/mi
2:11:02
↑ 64↓ 500.2%
21M
7:32/mi
2:18:34
↑ 106↓ 241.6%
35K· 21.75 mi
6:48/mi
2:23:39
↑ 17↓ 861.7%
23M
7:06/mi
2:32:33
↑ 23↓ 630.6%
24M
7:04/mi
2:39:37
↓ 821.3%
40K· 24.85 mi
7:31/mi
2:46:03
↓ 200.3%
25.2M
8:30/mi
2:48:59
↑ 13↓ 160.2%
Finish· 26.22 mi
7:36/mi
2:56:44
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:24:04
Pace6:25 /mi
2nd Half
Distance13.11 mi
Time1:32:40
Pace7:04 /mi
📊Positive Split: 10.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:0919:446:2119:44
6:21
-
10K
6.21 mi10:42:0439:396:2319:55
6:25
+0:04
15K
9.32 mi11:02:0159:366:2419:57
6:25
0:00
20K
12.43 mi11:22:061:19:416:2520:05
6:28
+0:03
Half
13.11 mi11:26:291:24:046:254:23
6:25
-0:03
25K
15.53 mi11:42:191:39:546:2615:50
6:32
+0:07
30K
18.64 mi12:03:502:01:256:3121:31
6:56
+0:24
20M
20.00 mi12:13:272:11:026:339:37
7:05
+0:09
21M
21.00 mi12:20:592:18:346:367:32
7:32
+0:27
35K
21.75 mi12:26:042:23:396:365:05
6:48
-0:44
23M
23.00 mi12:34:582:32:336:388:54
7:06
+0:18
24M
24.00 mi12:42:022:39:376:397:04
7:04
-0:02
40K
24.85 mi12:48:282:46:036:416:26
7:31
+0:27
25.2M
25.20 mi12:51:242:48:596:422:56
8:30
+0:59
Finish
26.22 mi12:59:092:56:446:457:45
7:36
-0:54

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

6:21 /mi

Average Pace

6:45 /mi

Slowest Pace

8:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:54

57% of race

Time at Steady Pace

52:11

30% of race

Time at Slower Pace

24:39

14% of race

Average Pace: 6:44 /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 mi10:22:0919:446:2119:44
6:21
#2763
10K
6.21 mi10:42:0439:396:2319:55
6:25
#2911
15K
9.32 mi11:02:0159:366:2419:57
6:25
#2968
20K
12.43 mi11:22:061:19:416:2520:05
6:28
#2936
Half
13.11 mi11:26:291:24:046:254:23
6:25
#2947
25K
15.53 mi11:42:191:39:546:2615:50
6:32
#2936
30K
18.64 mi12:03:502:01:256:3121:31
6:56
#3116
20M
20.00 mi12:13:272:11:026:339:37
7:05
#3168
21M
21.00 mi12:20:592:18:346:367:32
7:32
#3219
35K
21.75 mi12:26:042:23:396:365:05
6:48
#3225
23M
23.00 mi12:34:582:32:336:388:54
7:06
#3239
24M
24.00 mi12:42:022:39:376:397:04
7:04
#3282
40K
24.85 mi12:48:282:46:036:416:26
7:31
#3389
25.2M
25.20 mi12:51:242:48:596:422:56
8:30
#3454
Finish
26.22 mi12:59:092:56:446:457:45
7:36
#3676
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2763263326333068(Top 11%)2921(Top 18%)2921(Top 52%)
10K6.21 mi3.10 mi2911-1482774-1412774-1413101(Top 11%)2950(Top 18%)2950(Top 52%)
15K9.32 mi3.11 mi2968-572827-532827-533068(Top 11%)2921(Top 18%)2921(Top 52%)
20K12.43 mi3.11 mi2936+322797+302797+302900(Top 10%)2762(Top 17%)2762(Top 49%)
Half13.11 mi0.68 mi2947-112808-112808-113202(Top 11%)3043(Top 19%)3043(Top 54%)
25K15.53 mi2.42 mi2936+112799+92799+93051(Top 11%)2896(Top 18%)2896(Top 51%)
30K18.64 mi3.11 mi3116-1802963-1642963-1644235(Top 15%)3888(Top 24%)3888(Top 69%)
20M20.00 mi1.36 mi3168-523001-383001-384515(Top 16%)4099(Top 25%)4099(Top 73%)
21M21.00 mi1.00 mi3219-513047-463047-464746(Top 17%)4180(Top 26%)4180(Top 74%)
35K21.75 mi0.75 mi3225-63046+13046+14035(Top 14%)3610(Top 22%)3610(Top 64%)
23M23.00 mi1.25 mi3239-143057-113057-114352(Top 15%)3840(Top 24%)3840(Top 68%)
24M24.00 mi1.00 mi3282-433091-343091-344980(Top 18%)4237(Top 26%)4237(Top 75%)
40K24.85 mi0.85 mi3389-1073183-923183-926889(Top 24%)5344(Top 33%)5344(Top 95%)
25.2M25.20 mi0.35 mi3454-653234-513234-518707(Top 31%)6266(Top 39%)6266(Top 111%)
Finish26.22 mi1.02 mi3676-2223421-1873421-1879907(Top 35%)6916(Top 43%)6916(Top 123%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
×21story building
+97ft-345ft

Overall

3068

Males

2921

M18-39

2921

5K→10K

3.1 - 6.2 mi

Top 11%
×5story building
+79ft-138ft

Overall

3101

Males

2950

M18-39

2950

10K→15K

6.2 - 9.3 mi

Top 11%
×3story building
+67ft-78ft

Overall

3068

Males

2921

M18-39

2921

15K→20K

9.3 - 12.4 mi

Top 10%
×5story building
+106ft-86ft

Overall

2900

Males

2762

M18-39

2762

20K→Half

12.4 - 13.1 mi

Top 11%
×2story building
+19ft-37ft

Overall

3202

Males

3043

M18-39

3043

Half→25K

13.1 - 15.5 mi

Top 11%
×4story building
+66ft-88ft

Overall

3051

Males

2896

M18-39

2896

25K→30K

15.5 - 18.6 mi

Top 15%
×9story building
+181ft-148ft

Overall

4235

Males

3888

M18-39

3888

30K→20M

18.6 - 20.0 mi

Top 16%
×5story building
+64ft-50ft

Overall

4515

Males

4099

M18-39

4099

20M→21M

20.0 - 21.0 mi

Top 17%
×8story building
+106ft-24ft

Overall

4746

Males

4180

M18-39

4180

21M→35K

21.0 - 21.8 mi

Top 14%
×7story building
+17ft-86ft

Overall

4035

Males

3610

M18-39

3610

35K→23M

21.8 - 23.0 mi

Top 15%
×5story building
+23ft-63ft

Overall

4352

Males

3840

M18-39

3840

23M→24M

23.0 - 24.0 mi

Top 18%
×6story building
+12ft-82ft

Overall

4980

Males

4237

M18-39

4237

24M→40K

24.0 - 24.9 mi

Top 24%
×1story
+6ft-20ft

Overall

6889

Males

5344

M18-39

5344

40K→25.2M

24.9 - 25.2 mi

Top 31%
×1story
+13ft-16ft

Overall

8707

Males

6266

M18-39

6266

25.2M→Finish

25.2 - 26.2 mi

Top 35%
×2story building
+22ft-21ft

Overall

9907

Males

6916

M18-39

6916

Passing Analysis

Category:
Athletes Passed
613
Passed By
1526
Net Change
-913
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2763
5K → 10K78226-148#2763#2911
10K → 15K64121-57#2911#2968
15K → 20K9361+32#2968#2936
20K → Half1223-11#2936#2947
Half → 25K7362+11#2947#2936
25K → 30K61241-180#2936#3116
30K → 20M3991-52#3116#3168
20M → 21M3586-51#3168#3219
21M → 35K3440-6#3219#3225
35K → 23M6175-14#3225#3239
23M → 24M2770-43#3239#3282
24M → 40K15122-107#3282#3389
40K → 25.2M1176-65#3389#3454
25.2M → Finish10232-222#3454#3676
TOTALS6131526-913
📊

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