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BOSTON MARATHON 2025

Alan Thong

Bib: 2824•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 7%
Gender (Male)
#0 / 16105
Top 11%
Masters (Masters Men)
#0 / 10463
Top 3%
Division (M40-44)
#0 / 2247
Top 9%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:17
Rank: #1911
Start → 5K
19:17 | 6:12/mi
10K· 6.21 mi
39:20
Rank: #2627 (-716)
5K → 10K
20:03 | 6:27/mi
15K· 9.32 mi
58:47
Rank: #2435 (+192)
10K → 15K
19:27 | 6:16/mi
20K· 12.43 mi
1:18:10
Rank: #2208 (+227)
15K → 20K
19:23 | 6:14/mi
Half· 13.11 mi
1:22:20
Rank: #2159 (+49)
20K → Half
4:10 | 6:06/mi
25K· 15.53 mi
1:37:30
Rank: #2076 (+83)
Half → 25K
15:10 | 6:15/mi
30K· 18.64 mi
1:57:27
Rank: #1951 (+125)
25K → 30K
19:57 | 6:25/mi
20M
2:06:16
Rank: #1899 (+52)
30K → 20M
8:49 | 6:29/mi
21M
2:13:08
Rank: #1851 (+48)
20M → 21M
6:52 | 6:52/mi
35K· 21.75 mi
2:17:57
Rank: #1847 (+4)
21M → 35K
4:49 | 6:26/mi
23M
2:26:18
Rank: #1832 (+15)
35K → 23M
8:21 | 6:40/mi
24M
2:32:53
Rank: #1840 (-8)
23M → 24M
6:35 | 6:35/mi
40K· 24.85 mi
2:38:38
Rank: #1835 (+5)
24M → 40K
5:45 | 6:44/mi
25.2M
2:41:12
Rank: #1838 (-3)
40K → 25.2M
2:34 | 7:27/mi
Finish· 26.22 mi
2:47:50
Rank: #1851 (-13)
25.2M → Finish
6:38 | 6:31/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:22:20
Pace6:17 /mi
2nd Half
Distance13.11 mi
Time1:25:30
Pace6:31 /mi
📊Positive Split: 3.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:4119:176:1219:17
6:12
-
10K
6.21 mi10:40:4439:206:2020:03
6:27
+0:15
15K
9.32 mi11:00:1158:476:1819:27
6:16
-0:11
20K
12.43 mi11:19:341:18:106:1719:23
6:14
-0:02
Half
13.11 mi11:23:441:22:206:174:10
6:06
-0:08
25K
15.53 mi11:38:541:37:306:1715:10
6:15
+0:09
30K
18.64 mi11:58:511:57:276:1819:57
6:25
+0:10
20M
20.00 mi12:07:402:06:166:198:49
6:29
+0:04
21M
21.00 mi12:14:322:13:086:206:52
6:52
+0:23
35K
21.75 mi12:19:212:17:576:214:49
6:26
-0:26
23M
23.00 mi12:27:422:26:186:228:21
6:40
+0:14
24M
24.00 mi12:34:172:32:536:226:35
6:35
-0:05
40K
24.85 mi12:40:022:38:386:235:45
6:44
+0:09
25.2M
25.20 mi12:42:362:41:126:242:34
7:27
+0:43
Finish
26.22 mi12:49:142:47:506:246:38
6:31
-0:56

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

6:06 /mi

Average Pace

6:24 /mi

Slowest Pace

7:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:17:27

46% of race

Time at Steady Pace

1:06:51

40% of race

Time at Slower Pace

23:32

14% of race

Average Pace: 6:24 /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 mi10:20:4119:176:1219:17
6:12
#1911
10K
6.21 mi10:40:4439:206:2020:03
6:27
#2627
15K
9.32 mi11:00:1158:476:1819:27
6:16
#2435
20K
12.43 mi11:19:341:18:106:1719:23
6:14
#2208
Half
13.11 mi11:23:441:22:206:174:10
6:06
#2159
25K
15.53 mi11:38:541:37:306:1715:10
6:15
#2076
30K
18.64 mi11:58:511:57:276:1819:57
6:25
#1951
20M
20.00 mi12:07:402:06:166:198:49
6:29
#1899
21M
21.00 mi12:14:322:13:086:206:52
6:52
#1851
35K
21.75 mi12:19:212:17:576:214:49
6:26
#1847
23M
23.00 mi12:27:422:26:186:228:21
6:40
#1832
24M
24.00 mi12:34:172:32:536:226:35
6:35
#1840
40K
24.85 mi12:40:022:38:386:235:45
6:44
#1835
25.2M
25.20 mi12:42:362:41:126:242:34
7:27
#1838
Finish
26.22 mi12:49:142:47:506:246:38
6:31
#1851
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi1911181718172161(Top 8%)2063(Top 13%)2063(Top 92%)
10K6.21 mi3.10 mi2627-7162502-6852502-6853393(Top 12%)3222(Top 20%)3222(Top 143%)
15K9.32 mi3.11 mi2435+1922325+1772325+1772161(Top 8%)2063(Top 13%)2063(Top 92%)
20K12.43 mi3.11 mi2208+2272109+2162109+2161752(Top 6%)1666(Top 10%)1666(Top 74%)
Half13.11 mi0.68 mi2159+492061+482061+481592(Top 6%)1515(Top 9%)1515(Top 67%)
25K15.53 mi2.42 mi2076+831979+821979+821683(Top 6%)1600(Top 10%)1600(Top 71%)
30K18.64 mi3.11 mi1951+1251858+1211858+1211641(Top 6%)1556(Top 10%)1556(Top 69%)
20M20.00 mi1.36 mi1899+521807+511807+511593(Top 6%)1507(Top 9%)1507(Top 67%)
21M21.00 mi1.00 mi1851+481760+471760+471772(Top 6%)1673(Top 10%)1673(Top 74%)
35K21.75 mi0.75 mi1847+41755+51755+52195(Top 8%)2054(Top 13%)2054(Top 91%)
23M23.00 mi1.25 mi1832+151738+171738+172128(Top 7%)1989(Top 12%)1989(Top 89%)
24M24.00 mi1.00 mi1840-81743-51743-52426(Top 9%)2242(Top 14%)2242(Top 100%)
40K24.85 mi0.85 mi1835+51737+61737+62502(Top 9%)2284(Top 14%)2284(Top 102%)
25.2M25.20 mi0.35 mi1838-31740-31740-33169(Top 11%)2810(Top 17%)2810(Top 125%)
Finish26.22 mi1.02 mi1851-131752-121752-122873(Top 10%)2568(Top 16%)2568(Top 114%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 8%
×21stories
+97ft-345ft

Overall

2161

Males

2063

M40-44

2063

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3393

Males

3222

M40-44

3222

10K→15K

6.2 - 9.3 mi

Top 8%
×3stories
+67ft-78ft

Overall

2161

Males

2063

M40-44

2063

15K→20K

9.3 - 12.4 mi

Top 6%
×5stories
+106ft-86ft

Overall

1752

Males

1666

M40-44

1666

20K→Half

12.4 - 13.1 mi

Top 6%
×2stories
+19ft-37ft

Overall

1592

Males

1515

M40-44

1515

Half→25K

13.1 - 15.5 mi

Top 6%
×4stories
+66ft-88ft

Overall

1683

Males

1600

M40-44

1600

25K→30K

15.5 - 18.6 mi

Top 6%
×9stories
+181ft-148ft

Overall

1641

Males

1556

M40-44

1556

30K→20M

18.6 - 20.0 mi

Top 6%
×5stories
+64ft-50ft

Overall

1593

Males

1507

M40-44

1507

20M→21M

20.0 - 21.0 mi

Top 6%
×8stories
+106ft-24ft

Overall

1772

Males

1673

M40-44

1673

21M→35K

21.0 - 21.8 mi

Top 8%
×7stories
+17ft-86ft

Overall

2195

Males

2054

M40-44

2054

35K→23M

21.8 - 23.0 mi

Top 7%
×5stories
+23ft-63ft

Overall

2128

Males

1989

M40-44

1989

23M→24M

23.0 - 24.0 mi

Top 9%
×6stories
+12ft-82ft

Overall

2426

Males

2242

M40-44

2242

24M→40K

24.0 - 24.9 mi

Top 9%
×1story
+6ft-20ft

Overall

2502

Males

2284

M40-44

2284

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

3169

Males

2810

M40-44

2810

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2stories
+22ft-21ft

Overall

2873

Males

2568

M40-44

2568

Passing Analysis

Category:
Athletes Passed
1034
Passed By
974
Net Change
+60
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1911
5K → 10K6722-716#1911#2627
10K → 15K21018+192#2627#2435
15K → 20K2336+227#2435#2208
20K → Half490+49#2208#2159
Half → 25K9411+83#2159#2076
25K → 30K13712+125#2076#1951
30K → 20M6513+52#1951#1899
20M → 21M6719+48#1899#1851
21M → 35K2723+4#1851#1847
35K → 23M4833+15#1847#1832
23M → 24M3038-8#1832#1840
24M → 40K2823+5#1840#1835
40K → 25.2M1114-3#1835#1838
25.2M → Finish2942-13#1838#1851
TOTALS1034974+60
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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