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BOSTON MARATHON 2025

Andrew Chung

Bib: 12276•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 27%
Gender (Male)
#0 / 16105
Top 39%
Masters (Masters Men)
#0 / 10463
Top 26%
Division (M45-49)
#0 / 2386
Top 37%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:39
Rank: #10240
Start → 5K
22:39 | 7:17/mi
10K· 6.21 mi
44:44
Rank: #9441 (+799)
5K → 10K
22:05 | 7:06/mi
15K· 9.32 mi
1:07:04
Rank: #9290 (+151)
10K → 15K
22:20 | 7:11/mi
20K· 12.43 mi
1:30:07
Rank: #9421 (-131)
15K → 20K
23:03 | 7:25/mi
Half· 13.11 mi
1:35:03
Rank: #9402 (+19)
20K → Half
4:56 | 7:14/mi
25K· 15.53 mi
1:52:40
Rank: #9154 (+248)
Half → 25K
17:37 | 7:16/mi
30K· 18.64 mi
2:16:18
Rank: #8940 (+214)
25K → 30K
23:38 | 7:36/mi
20M
2:26:43
Rank: #8824 (+116)
30K → 20M
10:25 | 7:40/mi
21M
2:34:42
Rank: #8693 (+131)
20M → 21M
7:59 | 7:59/mi
35K· 21.75 mi
2:40:00
Rank: #8537 (+156)
21M → 35K
5:18 | 7:05/mi
23M
2:49:27
Rank: #8356 (+181)
35K → 23M
9:27 | 7:33/mi
24M
2:56:36
Rank: #8171 (+185)
23M → 24M
7:09 | 7:09/mi
40K· 24.85 mi
3:02:37
Rank: #7952 (+219)
24M → 40K
6:01 | 7:02/mi
25.2M
3:05:16
Rank: #7853 (+99)
40K → 25.2M
2:39 | 7:41/mi
Finish· 26.22 mi
3:11:46
Rank: #7537 (+316)
25.2M → Finish
6:30 | 6:23/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:03
Pace7:15 /mi
2nd Half
Distance13.11 mi
Time1:36:43
Pace7:23 /mi
📊Positive Split: 1.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:5622:397:1722:39
7:17
-
10K
6.21 mi11:13:0144:447:1222:05
7:06
-0:11
15K
9.32 mi11:35:211:07:047:1222:20
7:11
+0:05
20K
12.43 mi11:58:241:30:077:1523:03
7:25
+0:14
Half
13.11 mi12:03:201:35:037:154:56
7:14
-0:11
25K
15.53 mi12:20:571:52:407:1517:37
7:16
+0:02
30K
18.64 mi12:44:352:16:187:1923:38
7:36
+0:20
20M
20.00 mi12:55:002:26:437:2010:25
7:40
+0:04
21M
21.00 mi13:02:592:34:427:227:59
7:59
+0:19
35K
21.75 mi13:08:172:40:007:215:18
7:05
-0:54
23M
23.00 mi13:17:442:49:277:229:27
7:33
+0:28
24M
24.00 mi13:24:532:56:367:227:09
7:09
-0:24
40K
24.85 mi13:30:543:02:377:216:01
7:02
-0:07
25.2M
25.20 mi13:33:333:05:167:212:39
7:41
+0:39
Finish
26.22 mi13:40:033:11:467:196:30
6:23
-1:18

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

6:23 /mi

Average Pace

7:19 /mi

Slowest Pace

7:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

17:49

9% of race

Time at Steady Pace

1:59:49

62% of race

Time at Slower Pace

54:08

28% of race

Average Pace: 7:19 /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 mi10:50:5622:397:1722:39
7:17
#10240
10K
6.21 mi11:13:0144:447:1222:05
7:06
#9441
15K
9.32 mi11:35:211:07:047:1222:20
7:11
#9290
20K
12.43 mi11:58:241:30:077:1523:03
7:25
#9421
Half
13.11 mi12:03:201:35:037:154:56
7:14
#9402
25K
15.53 mi12:20:571:52:407:1517:37
7:16
#9154
30K
18.64 mi12:44:352:16:187:1923:38
7:36
#8940
20M
20.00 mi12:55:002:26:437:2010:25
7:40
#8824
21M
21.00 mi13:02:592:34:427:227:59
7:59
#8693
35K
21.75 mi13:08:172:40:007:215:18
7:05
#8537
23M
23.00 mi13:17:442:49:277:229:27
7:33
#8356
24M
24.00 mi13:24:532:56:367:227:09
7:09
#8171
40K
24.85 mi13:30:543:02:377:216:01
7:02
#7952
25.2M
25.20 mi13:33:333:05:167:212:39
7:41
#7853
Finish
26.22 mi13:40:033:11:467:196:30
6:23
#7537
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi10240828782878999(Top 32%)7543(Top 47%)7543(Top 316%)
10K6.21 mi3.10 mi9441+7997867+4207867+4208725(Top 31%)7428(Top 46%)7428(Top 311%)
15K9.32 mi3.11 mi9290+1517748+1197748+1198999(Top 32%)7543(Top 47%)7543(Top 316%)
20K12.43 mi3.11 mi9421-1317789-417789-4110036(Top 35%)8026(Top 50%)8026(Top 336%)
Half13.11 mi0.68 mi9402+197775+147775+149258(Top 33%)7601(Top 47%)7601(Top 319%)
25K15.53 mi2.42 mi9154+2487608+1677608+1678091(Top 28%)6816(Top 42%)6816(Top 286%)
30K18.64 mi3.11 mi8940+2147426+1827426+1828483(Top 30%)6865(Top 43%)6865(Top 288%)
20M20.00 mi1.36 mi8824+1167331+957331+958098(Top 29%)6496(Top 40%)6496(Top 272%)
21M21.00 mi1.00 mi8693+1317221+1107221+1107235(Top 25%)5809(Top 36%)5809(Top 243%)
35K21.75 mi0.75 mi8537+1567115+1067115+1065881(Top 21%)4980(Top 31%)4980(Top 209%)
23M23.00 mi1.25 mi8356+1816960+1556960+1556881(Top 24%)5515(Top 34%)5515(Top 231%)
24M24.00 mi1.00 mi8171+1856807+1536807+1535501(Top 19%)4598(Top 29%)4598(Top 193%)
40K24.85 mi0.85 mi7952+2196641+1666641+1664119(Top 15%)3577(Top 22%)3577(Top 150%)
25.2M25.20 mi0.35 mi7853+996569+726569+724245(Top 15%)3601(Top 22%)3601(Top 151%)
Finish26.22 mi1.02 mi7537+3166331+2386331+2382221(Top 8%)2034(Top 13%)2034(Top 85%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 32%
×21stories
+97ft-345ft

Overall

8999

Males

7543

M45-49

7543

5K→10K

3.1 - 6.2 mi

Top 31%
×5stories
+79ft-138ft

Overall

8725

Males

7428

M45-49

7428

10K→15K

6.2 - 9.3 mi

Top 32%
×3stories
+67ft-78ft

Overall

8999

Males

7543

M45-49

7543

15K→20K

9.3 - 12.4 mi

Top 35%
×5stories
+106ft-86ft

Overall

10036

Males

8026

M45-49

8026

20K→Half

12.4 - 13.1 mi

Top 33%
×2stories
+19ft-37ft

Overall

9258

Males

7601

M45-49

7601

Half→25K

13.1 - 15.5 mi

Top 28%
×4stories
+66ft-88ft

Overall

8091

Males

6816

M45-49

6816

25K→30K

15.5 - 18.6 mi

Top 30%
×9stories
+181ft-148ft

Overall

8483

Males

6865

M45-49

6865

30K→20M

18.6 - 20.0 mi

Top 29%
×5stories
+64ft-50ft

Overall

8098

Males

6496

M45-49

6496

20M→21M

20.0 - 21.0 mi

Top 25%
×8stories
+106ft-24ft

Overall

7235

Males

5809

M45-49

5809

21M→35K

21.0 - 21.8 mi

Top 21%
×7stories
+17ft-86ft

Overall

5881

Males

4980

M45-49

4980

35K→23M

21.8 - 23.0 mi

Top 24%
×5stories
+23ft-63ft

Overall

6881

Males

5515

M45-49

5515

23M→24M

23.0 - 24.0 mi

Top 19%
×6stories
+12ft-82ft

Overall

5501

Males

4598

M45-49

4598

24M→40K

24.0 - 24.9 mi

Top 15%
×1story
+6ft-20ft

Overall

4119

Males

3577

M45-49

3577

40K→25.2M

24.9 - 25.2 mi

Top 15%
×1story
+13ft-16ft

Overall

4245

Males

3601

M45-49

3601

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2stories
+22ft-21ft

Overall

2221

Males

2034

M45-49

2034

Passing Analysis

Category:
Athletes Passed
3385*
Passed By
682
Net Change
+2703
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10240
5K → 10K839*40+799#10240#9441
10K → 15K24392+151#9441#9290
15K → 20K144275-131#9290#9421
20K → Half3415+19#9421#9402
Half → 25K28436+248#9402#9154
25K → 30K330116+214#9154#8940
30K → 20M15640+116#8940#8824
20M → 21M16231+131#8824#8693
21M → 35K1615+156#8693#8537
35K → 23M20524+181#8537#8356
23M → 24M1905+185#8356#8171
24M → 40K2212+219#8171#7952
40K → 25.2M1001+99#7952#7853
25.2M → Finish3160+316#7853#7537
TOTALS3385*682+2703

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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