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BOSTON MARATHON 2025

Fanliang Kong

Bib: 6113•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 16%
Gender (Male)
#0 / 16105
Top 26%
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:57
Rank: #5832
Start → 5K
6:45/mi
20:57 split
10K· 6.21 mi
41:50
Rank: #5688 (+144)
5K → 10K
6:43/mi
20:53 split
15K· 9.32 mi
1:01:44
Rank: #4571 (+1117)
10K → 15K
6:24/mi
19:54 split
20K· 12.43 mi
1:22:12
Rank: #4295 (+276)
15K → 20K
6:35/mi
20:28 split
Half· 13.11 mi
1:26:40
Rank: #4260 (+35)
20K → Half
6:33/mi
4:28 split
25K· 15.53 mi
1:42:56
Rank: #4192 (+68)
Half → 25K
6:43/mi
16:16 split
30K· 18.64 mi
2:04:38
Rank: #4201 (-9)
25K → 30K
6:59/mi
21:42 split
20M
2:14:11
Rank: #4175 (+26)
30K → 20M
7:02/mi
9:33 split
21M
2:21:51
Rank: #4234 (-59)
20M → 21M
7:40/mi
7:40 split
35K· 21.75 mi
2:26:56
Rank: #4207 (+27)
21M → 35K
6:48/mi
5:05 split
23M
2:36:01
Rank: #4260 (-53)
35K → 23M
7:15/mi
9:05 split
24M
2:43:09
Rank: #4283 (-23)
23M → 24M
7:08/mi
7:08 split
40K· 24.85 mi
2:49:23
Rank: #4340 (-57)
24M → 40K
7:17/mi
6:14 split
25.2M
2:52:15
Rank: #4402 (-62)
40K → 25.2M
8:19/mi
2:52 split
Finish· 26.22 mi
2:59:34
Rank: #4545 (-143)
25.2M → Finish
7:11/mi
7:19 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:40
Pace6:37 /mi
2nd Half
Distance13.11 mi
Time1:32:54
Pace7:05 /mi
📊Positive Split: 7.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:28:5320:576:4520:57
6:45
-
10K
6.21 mi10:49:4641:506:4420:53
6:43
-0:02
15K
9.32 mi11:09:401:01:446:3719:54
6:24
-0:19
20K
12.43 mi11:30:081:22:126:3720:28
6:35
+0:11
Half
13.11 mi11:34:361:26:406:374:28
6:33
-0:02
25K
15.53 mi11:50:521:42:566:3816:16
6:43
+0:10
30K
18.64 mi12:12:342:04:386:4121:42
6:59
+0:16
20M
20.00 mi12:22:072:14:116:439:33
7:02
+0:03
21M
21.00 mi12:29:472:21:516:457:40
7:40
+0:38
35K
21.75 mi12:34:522:26:566:455:05
6:48
-0:52
23M
23.00 mi12:43:572:36:016:479:05
7:15
+0:27
24M
24.00 mi12:51:052:43:096:487:08
7:08
-0:07
40K
24.85 mi12:57:192:49:236:496:14
7:17
+0:09
25.2M
25.20 mi13:00:112:52:156:502:52
8:19
+1:02
Finish
26.22 mi13:07:302:59:346:517:19
7:11
-1:08

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

6:24 /mi

Average Pace

6:51 /mi

Slowest Pace

8:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:21:59

46% of race

Time at Steady Pace

1:11:44

40% of race

Time at Slower Pace

25:51

14% of race

Average Pace: 6:51 /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 mi10:28:5320:576:4520:57
6:45
#5832
10K
6.21 mi10:49:4641:506:4420:53
6:43
#5688
15K
9.32 mi11:09:401:01:446:3719:54
6:24
#4571
20K
12.43 mi11:30:081:22:126:3720:28
6:35
#4295
Half
13.11 mi11:34:361:26:406:374:28
6:33
#4260
25K
15.53 mi11:50:521:42:566:3816:16
6:43
#4192
30K
18.64 mi12:12:342:04:386:4121:42
6:59
#4201
20M
20.00 mi12:22:072:14:116:439:33
7:02
#4175
21M
21.00 mi12:29:472:21:516:457:40
7:40
#4234
35K
21.75 mi12:34:522:26:566:455:05
6:48
#4207
23M
23.00 mi12:43:572:36:016:479:05
7:15
#4260
24M
24.00 mi12:51:052:43:096:487:08
7:08
#4283
40K
24.85 mi12:57:192:49:236:496:14
7:17
#4340
25.2M
25.20 mi13:00:112:52:156:502:52
8:19
#4402
Finish
26.22 mi13:07:302:59:346:517:19
7:11
#4545
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5832537753772988(Top 11%)2847(Top 18%)2847(Top 50%)
10K6.21 mi3.10 mi5688+1445255+1225255+1225536(Top 19%)5097(Top 32%)5097(Top 90%)
15K9.32 mi3.11 mi4571+11174289+9664289+9662988(Top 11%)2847(Top 18%)2847(Top 50%)
20K12.43 mi3.11 mi4295+2764039+2504039+2503628(Top 13%)3427(Top 21%)3427(Top 61%)
Half13.11 mi0.68 mi4260+354007+324007+324051(Top 14%)3815(Top 24%)3815(Top 68%)
25K15.53 mi2.42 mi4192+683938+693938+694223(Top 15%)3925(Top 24%)3925(Top 70%)
30K18.64 mi3.11 mi4201-93935+33935+34610(Top 16%)4207(Top 26%)4207(Top 75%)
20M20.00 mi1.36 mi4175+263906+293906+294296(Top 15%)3919(Top 24%)3919(Top 69%)
21M21.00 mi1.00 mi4234-593946-403946-405468(Top 19%)4714(Top 29%)4714(Top 84%)
35K21.75 mi0.75 mi4207+273919+273919+274114(Top 14%)3689(Top 23%)3689(Top 65%)
23M23.00 mi1.25 mi4260-533955-363955-365209(Top 18%)4460(Top 28%)4460(Top 79%)
24M24.00 mi1.00 mi4283-233961-63961-65406(Top 19%)4540(Top 28%)4540(Top 80%)
40K24.85 mi0.85 mi4340-574001-404001-405594(Top 20%)4613(Top 29%)4613(Top 82%)
25.2M25.20 mi0.35 mi4402-624053-524053-527649(Top 27%)5708(Top 35%)5708(Top 101%)
Finish26.22 mi1.02 mi4545-1434167-1144167-1146906(Top 24%)5272(Top 33%)5272(Top 93%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
×21story building
+97ft-345ft

Overall

2988

Males

2847

M18-39

2847

5K→10K

3.1 - 6.2 mi

Top 19%
×5story building
+79ft-138ft

Overall

5536

Males

5097

M18-39

5097

10K→15K

6.2 - 9.3 mi

Top 11%
×3story building
+67ft-78ft

Overall

2988

Males

2847

M18-39

2847

15K→20K

9.3 - 12.4 mi

Top 13%
×5story building
+106ft-86ft

Overall

3628

Males

3427

M18-39

3427

20K→Half

12.4 - 13.1 mi

Top 14%
×2story building
+19ft-37ft

Overall

4051

Males

3815

M18-39

3815

Half→25K

13.1 - 15.5 mi

Top 15%
×4story building
+66ft-88ft

Overall

4223

Males

3925

M18-39

3925

25K→30K

15.5 - 18.6 mi

Top 16%
×9story building
+181ft-148ft

Overall

4610

Males

4207

M18-39

4207

30K→20M

18.6 - 20.0 mi

Top 15%
×5story building
+64ft-50ft

Overall

4296

Males

3919

M18-39

3919

20M→21M

20.0 - 21.0 mi

Top 19%
×8story building
+106ft-24ft

Overall

5468

Males

4714

M18-39

4714

21M→35K

21.0 - 21.8 mi

Top 14%
×7story building
+17ft-86ft

Overall

4114

Males

3689

M18-39

3689

35K→23M

21.8 - 23.0 mi

Top 18%
×5story building
+23ft-63ft

Overall

5209

Males

4460

M18-39

4460

23M→24M

23.0 - 24.0 mi

Top 19%
×6story building
+12ft-82ft

Overall

5406

Males

4540

M18-39

4540

24M→40K

24.0 - 24.9 mi

Top 20%
×1story
+6ft-20ft

Overall

5594

Males

4613

M18-39

4613

40K→25.2M

24.9 - 25.2 mi

Top 27%
×1story
+13ft-16ft

Overall

7649

Males

5708

M18-39

5708

25.2M→Finish

25.2 - 26.2 mi

Top 24%
×2story building
+22ft-21ft

Overall

6906

Males

5272

M18-39

5272

Passing Analysis

Category:
Athletes Passed
2292
Passed By
1005
Net Change
+1287
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5832
5K → 10K258114+144#5832#5688
10K → 15K11170+1117#5688#4571
15K → 20K2837+276#4571#4295
20K → Half438+35#4295#4260
Half → 25K11850+68#4260#4192
25K → 30K133142-9#4192#4201
30K → 20M8761+26#4201#4175
20M → 21M46105-59#4175#4234
21M → 35K4215+27#4234#4207
35K → 23M58111-53#4207#4260
23M → 24M5174-23#4260#4283
24M → 40K3289-57#4283#4340
40K → 25.2M1072-62#4340#4402
25.2M → Finish14157-143#4402#4545
TOTALS22921005+1287
📊

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