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BOSTON MARATHON 2025

Sopon Chaikornkij

Bib: 19530•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M55-59)
#0 / 1648
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
7:44/mi
24:01
↑ 97↓ 3451.5%
10K· 6.21 mi
7:47/mi
48:12
↑ 79↓ 1380.4%
15K· 9.32 mi
7:53/mi
1:12:42
↑ 67↓ 78
20K· 12.43 mi
8:03/mi
1:37:42
↑ 106↓ 860.1%
Half· 13.11 mi
7:56/mi
1:43:07
↑ 19↓ 370.5%
25K· 15.53 mi
8:17/mi
2:03:11
↑ 66↓ 880.2%
30K· 18.64 mi
9:28/mi
2:32:37
↑ 181↓ 1480.2%
20M
10:11/mi
2:46:27
↑ 64↓ 500.2%
21M
10:58/mi
2:57:25
↑ 106↓ 241.6%
35K· 21.75 mi
8:51/mi
3:04:02
↑ 17↓ 861.7%
23M
9:49/mi
3:16:20
↑ 23↓ 630.6%
24M
9:32/mi
3:25:52
↓ 821.3%
40K· 24.85 mi
9:32/mi
3:34:01
↓ 200.3%
25.2M
11:13/mi
3:37:53
↑ 13↓ 160.2%
Finish· 26.22 mi
9:10/mi
3:47:13
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:07
Pace7:52 /mi
2nd Half
Distance13.11 mi
Time2:04:06
Pace9:28 /mi
📊Positive Split: 20.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:3924:017:4424:01
7:44
-
10K
6.21 mi11:39:5048:127:4524:11
7:47
+0:03
15K
9.32 mi12:04:201:12:427:4824:30
7:53
+0:06
20K
12.43 mi12:29:201:37:427:5225:00
8:03
+0:10
Half
13.11 mi12:34:451:43:077:525:25
7:56
-0:07
25K
15.53 mi12:54:492:03:117:5620:04
8:17
+0:21
30K
18.64 mi13:24:152:32:378:1129:26
9:28
+1:11
20M
20.00 mi13:38:052:46:278:1913:50
10:11
+0:43
21M
21.00 mi13:49:032:57:258:2710:58
10:58
+0:47
35K
21.75 mi13:55:403:04:028:286:37
8:51
-2:07
23M
23.00 mi14:07:583:16:208:3212:18
9:49
+0:58
24M
24.00 mi14:17:303:25:528:359:32
9:32
-0:17
40K
24.85 mi14:25:393:34:018:378:09
9:32
0:00
25.2M
25.20 mi14:29:313:37:538:393:52
11:13
+1:41
Finish
26.22 mi14:38:513:47:138:409:20
9:10
-2:03

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

7:44 /mi

Average Pace

8:40 /mi

Slowest Pace

11:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:03:11

54% of race

Time at Steady Pace

1:03:04

28% of race

Time at Slower Pace

40:58

18% of race

Average Pace: 8:40 /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 mi11:15:3924:017:4424:01
7:44
#14209
10K
6.21 mi11:39:5048:127:4524:11
7:47
#14384
15K
9.32 mi12:04:201:12:427:4824:30
7:53
#14625
20K
12.43 mi12:29:201:37:427:5225:00
8:03
#14762
Half
13.11 mi12:34:451:43:077:525:25
7:56
#14791
25K
15.53 mi12:54:492:03:117:5620:04
8:17
#14988
30K
18.64 mi13:24:152:32:378:1129:26
9:28
#16132
20M
20.00 mi13:38:052:46:278:1913:50
10:11
#16652
21M
21.00 mi13:49:032:57:258:2710:58
10:58
#16999
35K
21.75 mi13:55:403:04:028:286:37
8:51
#17024
23M
23.00 mi14:07:583:16:208:3212:18
9:49
#17266
24M
24.00 mi14:17:303:25:528:359:32
9:32
#17395
40K
24.85 mi14:25:393:34:018:378:09
9:32
#17470
25.2M
25.20 mi14:29:313:37:538:393:52
11:13
#17548
Finish
26.22 mi14:38:513:47:138:409:20
9:10
#17652
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi14209101311013115125(Top 53%)10426(Top 65%)10426(Top 633%)
10K6.21 mi3.10 mi14384-17510181-5010181-5014662(Top 52%)10283(Top 64%)10283(Top 624%)
15K9.32 mi3.11 mi14625-24110254-7310254-7315125(Top 53%)10426(Top 65%)10426(Top 633%)
20K12.43 mi3.11 mi14762-13710270-1610270-1615253(Top 54%)10433(Top 65%)10433(Top 633%)
Half13.11 mi0.68 mi14791-2910279-910279-915403(Top 54%)10540(Top 65%)10540(Top 640%)
25K15.53 mi2.42 mi14988-19710338-5910338-5915764(Top 55%)10551(Top 66%)10551(Top 640%)
30K18.64 mi3.11 mi16132-114410782-44410782-44419831(Top 70%)12213(Top 76%)12213(Top 741%)
20M20.00 mi1.36 mi16652-52010970-18810970-18821499(Top 76%)12812(Top 80%)12812(Top 777%)
21M21.00 mi1.00 mi16999-34711074-10411074-10421282(Top 75%)12629(Top 78%)12629(Top 766%)
35K21.75 mi0.75 mi17024-2511062+1211062+1217454(Top 61%)10804(Top 67%)10804(Top 656%)
23M23.00 mi1.25 mi17266-24211123-6111123-6119862(Top 70%)11832(Top 73%)11832(Top 718%)
24M24.00 mi1.00 mi17395-12911160-3711160-3719715(Top 69%)11725(Top 73%)11725(Top 711%)
40K24.85 mi0.85 mi17470-7511161-111161-118827(Top 66%)11236(Top 70%)11236(Top 682%)
25.2M25.20 mi0.35 mi17548-7811182-2111182-2121223(Top 75%)12385(Top 77%)12385(Top 752%)
Finish26.22 mi1.02 mi17652-10411220-3811220-3819758(Top 70%)11690(Top 73%)11690(Top 709%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21story building
+97ft-345ft

Overall

15125

Males

10426

M55-59

10426

5K→10K

3.1 - 6.2 mi

Top 52%
×5story building
+79ft-138ft

Overall

14662

Males

10283

M55-59

10283

10K→15K

6.2 - 9.3 mi

Top 53%
×3story building
+67ft-78ft

Overall

15125

Males

10426

M55-59

10426

15K→20K

9.3 - 12.4 mi

Top 54%
×5story building
+106ft-86ft

Overall

15253

Males

10433

M55-59

10433

20K→Half

12.4 - 13.1 mi

Top 54%
×2story building
+19ft-37ft

Overall

15403

Males

10540

M55-59

10540

Half→25K

13.1 - 15.5 mi

Top 55%
×4story building
+66ft-88ft

Overall

15764

Males

10551

M55-59

10551

25K→30K

15.5 - 18.6 mi

Top 70%
×9story building
+181ft-148ft

Overall

19831

Males

12213

M55-59

12213

30K→20M

18.6 - 20.0 mi

Top 76%
×5story building
+64ft-50ft

Overall

21499

Males

12812

M55-59

12812

20M→21M

20.0 - 21.0 mi

Top 75%
×8story building
+106ft-24ft

Overall

21282

Males

12629

M55-59

12629

21M→35K

21.0 - 21.8 mi

Top 61%
×7story building
+17ft-86ft

Overall

17454

Males

10804

M55-59

10804

35K→23M

21.8 - 23.0 mi

Top 70%
×5story building
+23ft-63ft

Overall

19862

Males

11832

M55-59

11832

23M→24M

23.0 - 24.0 mi

Top 69%
×6story building
+12ft-82ft

Overall

19715

Males

11725

M55-59

11725

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

18827

Males

11236

M55-59

11236

40K→25.2M

24.9 - 25.2 mi

Top 75%
×1story
+13ft-16ft

Overall

21223

Males

12385

M55-59

12385

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2story building
+22ft-21ft

Overall

19758

Males

11690

M55-59

11690

Passing Analysis

Category:
Athletes Passed
1037
Passed By
4480
Net Change
-3443
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14209
5K → 10K215390-175#14209#14384
10K → 15K129370-241#14384#14625
15K → 20K171308-137#14625#14762
20K → Half2554-29#14762#14791
Half → 25K130327-197#14791#14988
25K → 30K441188-1144#14988#16132
30K → 20M24544-520#16132#16652
20M → 21M44391-347#16652#16999
21M → 35K5782-25#16999#17024
35K → 23M62304-242#17024#17266
23M → 24M54183-129#17266#17395
24M → 40K44119-75#17395#17470
40K → 25.2M1088-78#17470#17548
25.2M → Finish28132-104#17548#17652
TOTALS10374480-3443
📊

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