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BOSTON MARATHON 2025

Donald Chung

Bib: 23780•M

MD

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M65-69)
#0 / 639
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
31:19
Rank: #25777
Start → 5K
31:19 | 10:05/mi
10K· 6.21 mi
1:03:25
Rank: #25924 (-147)
5K → 10K
32:06 | 10:20/mi
15K· 9.32 mi
1:36:03
Rank: #25926 (-2)
10K → 15K
32:38 | 10:30/mi
20K· 12.43 mi
2:08:48
Rank: #25721 (+205)
15K → 20K
32:45 | 10:32/mi
Half· 13.11 mi
2:15:43
Rank: #25695 (+26)
20K → Half
6:55 | 10:08/mi
25K· 15.53 mi
2:41:33
Rank: #25511 (+184)
Half → 25K
25:50 | 10:39/mi
30K· 18.64 mi
3:15:23
Rank: #25203 (+308)
25K → 30K
33:50 | 10:53/mi
20M
3:29:59
Rank: #25064 (+139)
30K → 20M
14:36 | 10:45/mi
21M
3:41:20
Rank: #24942 (+122)
20M → 21M
11:21 | 11:21/mi
35K· 21.75 mi
3:48:56
Rank: #24864 (+78)
21M → 35K
7:36 | 10:10/mi
23M
4:02:32
Rank: #24784 (+80)
35K → 23M
13:36 | 10:52/mi
24M
4:13:08
Rank: #24723 (+61)
23M → 24M
10:36 | 10:36/mi
40K· 24.85 mi
4:22:14
Rank: #24642 (+81)
24M → 40K
9:06 | 10:39/mi
25.2M
4:26:18
Rank: #24626 (+16)
40K → 25.2M
4:04 | 11:48/mi
Finish· 26.22 mi
4:36:46
Rank: #24591 (+35)
25.2M → Finish
10:28 | 10:16/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:15:43
Pace10:21 /mi
2nd Half
Distance13.11 mi
Time2:21:03
Pace10:46 /mi
📊Positive Split: 3.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:4931:1910:0531:19
10:05
-
10K
6.21 mi12:20:551:03:2510:1232:06
10:20
+0:15
15K
9.32 mi12:53:331:36:0310:1832:38
10:30
+0:10
20K
12.43 mi13:26:182:08:4810:2232:45
10:32
+0:02
Half
13.11 mi13:33:132:15:4310:216:55
10:08
-0:24
25K
15.53 mi13:59:032:41:3310:2425:50
10:39
+0:31
30K
18.64 mi14:32:533:15:2310:2933:50
10:53
+0:14
20M
20.00 mi14:47:293:29:5910:3014:36
10:45
-0:08
21M
21.00 mi14:58:503:41:2010:3211:21
11:21
+0:36
35K
21.75 mi15:06:263:48:5610:327:36
10:10
-1:11
23M
23.00 mi15:20:024:02:3210:3313:36
10:52
+0:42
24M
24.00 mi15:30:384:13:0810:3310:36
10:36
-0:16
40K
24.85 mi15:39:444:22:1410:339:06
10:39
+0:03
25.2M
25.20 mi15:43:484:26:1810:344:04
11:48
+1:09
Finish
26.22 mi15:54:164:36:4610:3410:28
10:16
-1:32

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

10:05 /mi

Average Pace

10:34 /mi

Slowest Pace

11:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

4:21:21

94% of race

Time at Steady Pace

15:25

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 10:33 /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 mi11:48:4931:1910:0531:19
10:05
#25777
10K
6.21 mi12:20:551:03:2510:1232:06
10:20
#25924
15K
9.32 mi12:53:331:36:0310:1832:38
10:30
#25926
20K
12.43 mi13:26:182:08:4810:2232:45
10:32
#25721
Half
13.11 mi13:33:132:15:4310:216:55
10:08
#25695
25K
15.53 mi13:59:032:41:3310:2425:50
10:39
#25511
30K
18.64 mi14:32:533:15:2310:2933:50
10:53
#25203
20M
20.00 mi14:47:293:29:5910:3014:36
10:45
#25064
21M
21.00 mi14:58:503:41:2010:3211:21
11:21
#24942
35K
21.75 mi15:06:263:48:5610:327:36
10:10
#24864
23M
23.00 mi15:20:024:02:3210:3313:36
10:52
#24784
24M
24.00 mi15:30:384:13:0810:3310:36
10:36
#24723
40K
24.85 mi15:39:444:22:1410:339:06
10:39
#24642
25.2M
25.20 mi15:43:484:26:1810:344:04
11:48
#24626
Finish
26.22 mi15:54:164:36:4610:3410:28
10:16
#24591
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi25777150811508125944(Top 91%)15120(Top 94%)15120(Top 2366%)
10K6.21 mi3.10 mi25924-14715130-4915130-4925975(Top 91%)15133(Top 94%)15133(Top 2368%)
15K9.32 mi3.11 mi25926-215125+515125+525944(Top 91%)15120(Top 94%)15120(Top 2366%)
20K12.43 mi3.11 mi25721+20515027+9815027+9825258(Top 89%)14783(Top 92%)14783(Top 2313%)
Half13.11 mi0.68 mi25695+2615018+915018+925110(Top 88%)14719(Top 91%)14719(Top 2303%)
25K15.53 mi2.42 mi25511+18414919+9914919+9924639(Top 87%)14481(Top 90%)14481(Top 2266%)
30K18.64 mi3.11 mi25203+30814742+17714742+17723797(Top 84%)13979(Top 87%)13979(Top 2188%)
20M20.00 mi1.36 mi25064+13914675+6714675+6723057(Top 81%)13552(Top 84%)13552(Top 2121%)
21M21.00 mi1.00 mi24942+12214605+7014605+7022274(Top 78%)13099(Top 81%)13099(Top 2050%)
35K21.75 mi0.75 mi24864+7814560+4514560+4522323(Top 79%)13071(Top 81%)13071(Top 2046%)
23M23.00 mi1.25 mi24784+8014511+4914511+4922905(Top 81%)13301(Top 83%)13301(Top 2082%)
24M24.00 mi1.00 mi24723+6114462+4914462+4923077(Top 81%)13348(Top 83%)13348(Top 2089%)
40K24.85 mi0.85 mi24642+8114416+4614416+4622299(Top 79%)12889(Top 80%)12889(Top 2017%)
25.2M25.20 mi0.35 mi24626+1614406+1014406+1022766(Top 80%)13169(Top 82%)13169(Top 2061%)
Finish26.22 mi1.02 mi24591+3514381+2514381+2523726(Top 84%)13631(Top 85%)13631(Top 2133%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 91%
×21stories
+97ft-345ft

Overall

25944

Males

15120

M65-69

15120

5K→10K

3.1 - 6.2 mi

Top 91%
×5stories
+79ft-138ft

Overall

25975

Males

15133

M65-69

15133

10K→15K

6.2 - 9.3 mi

Top 91%
×3stories
+67ft-78ft

Overall

25944

Males

15120

M65-69

15120

15K→20K

9.3 - 12.4 mi

Top 89%
×5stories
+106ft-86ft

Overall

25258

Males

14783

M65-69

14783

20K→Half

12.4 - 13.1 mi

Top 88%
×2stories
+19ft-37ft

Overall

25110

Males

14719

M65-69

14719

Half→25K

13.1 - 15.5 mi

Top 87%
×4stories
+66ft-88ft

Overall

24639

Males

14481

M65-69

14481

25K→30K

15.5 - 18.6 mi

Top 84%
×9stories
+181ft-148ft

Overall

23797

Males

13979

M65-69

13979

30K→20M

18.6 - 20.0 mi

Top 81%
×5stories
+64ft-50ft

Overall

23057

Males

13552

M65-69

13552

20M→21M

20.0 - 21.0 mi

Top 78%
×8stories
+106ft-24ft

Overall

22274

Males

13099

M65-69

13099

21M→35K

21.0 - 21.8 mi

Top 79%
×7stories
+17ft-86ft

Overall

22323

Males

13071

M65-69

13071

35K→23M

21.8 - 23.0 mi

Top 81%
×5stories
+23ft-63ft

Overall

22905

Males

13301

M65-69

13301

23M→24M

23.0 - 24.0 mi

Top 81%
×6stories
+12ft-82ft

Overall

23077

Males

13348

M65-69

13348

24M→40K

24.0 - 24.9 mi

Top 79%
×1story
+6ft-20ft

Overall

22299

Males

12889

M65-69

12889

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

22766

Males

13169

M65-69

13169

25.2M→Finish

25.2 - 26.2 mi

Top 84%
×2stories
+22ft-21ft

Overall

23726

Males

13631

M65-69

13631

Passing Analysis

Category:
Athletes Passed
1758
Passed By
572
Net Change
+1186
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25777
5K → 10K145292-147#25777#25924
10K → 15K127129-2#25924#25926
15K → 20K23530+205#25926#25721
20K → Half326+26#25721#25695
Half → 25K20723+184#25695#25511
25K → 30K33224+308#25511#25203
30K → 20M1412+139#25203#25064
20M → 21M1286+122#25064#24942
21M → 35K868+78#24942#24864
35K → 23M9111+80#24864#24784
23M → 24M7716+61#24784#24723
24M → 40K876+81#24723#24642
40K → 25.2M204+16#24642#24626
25.2M → Finish5015+35#24626#24591
TOTALS1758572+1186
📊

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