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BOSTON MARATHON 2025

Luke Duncan

Bib: 4340•M

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Overall
#0 / 28404
Gender (Male)
#0 / 16105
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
21:08
Rank: #6337
Start → 5K
21:08 | 6:48/mi
10K· 6.21 mi
42:38
Rank: #6863 (-526)
5K → 10K
21:30 | 6:55/mi
15K· 9.32 mi
1:04:25
Rank: #7171 (-308)
10K → 15K
21:47 | 7:01/mi
20K· 12.43 mi
1:26:15
Rank: #7127 (+44)
15K → 20K
21:50 | 7:02/mi
Half· 13.11 mi
1:31:05
Rank: #7175 (-48)
20K → Half
4:50 | 7:05/mi
25K· 15.53 mi
1:48:42
Rank: #7254 (-79)
Half → 25K
17:37 | 7:16/mi
30K· 18.64 mi
2:14:30
Rank: #8143 (-889)
25K → 30K
25:48 | 8:18/mi
20M
2:30:15
Rank: #10360 (-2217)
30K → 20M
15:45 | 11:35/mi
21M
2:43:03
Rank: #12003 (-1643)
20M → 21M
12:48 | 12:48/mi
35K· 21.75 mi
2:50:52
Rank: #12679 (-676)
21M → 35K
7:49 | 10:27/mi
23M
3:04:39
Rank: #13743 (-1064)
35K → 23M
13:47 | 11:01/mi
24M
3:14:32
Rank: #14247 (-504)
23M → 24M
9:53 | 9:53/mi
40K· 24.85 mi
3:23:07
Rank: #14543 (-296)
24M → 40K
8:35 | 10:02/mi
25.2M
3:26:37
Rank: #14591 (-48)
40K → 25.2M
3:30 | 10:09/mi
Finish· 26.22 mi
3:35:21
Rank: #14645 (-54)
25.2M → Finish
8:44 | 8:34/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:31:05
Pace6:57 /mi
2nd Half
Distance13.11 mi
Time2:04:16
Pace9:29 /mi
📊Positive Split: 36.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:1121:086:4821:08
6:48
-
10K
6.21 mi10:44:4142:386:5221:30
6:55
+0:07
15K
9.32 mi11:06:281:04:256:5521:47
7:01
+0:06
20K
12.43 mi11:28:181:26:156:5621:50
7:02
+0:01
Half
13.11 mi11:33:081:31:056:574:50
7:05
+0:03
25K
15.53 mi11:50:451:48:427:0017:37
7:16
+0:11
30K
18.64 mi12:16:332:14:307:1325:48
8:18
+1:02
20M
20.00 mi12:32:182:30:157:3115:45
11:35
+3:17
21M
21.00 mi12:45:062:43:037:4612:48
12:48
+1:13
35K
21.75 mi12:52:552:50:527:517:49
10:27
-2:21
23M
23.00 mi13:06:423:04:398:0213:47
11:01
+0:34
24M
24.00 mi13:16:353:14:328:069:53
9:53
-1:08
40K
24.85 mi13:25:103:23:078:108:35
10:02
+0:09
25.2M
25.20 mi13:28:403:26:378:123:30
10:09
+0:07
Finish
26.22 mi13:37:243:35:218:138:44
8:34
-1:35

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

6:48 /mi

Average Pace

8:13 /mi

Slowest Pace

12:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:48:42

50% of race

Time at Steady Pace

34:32

16% of race

Time at Slower Pace

1:12:07

33% of race

Average Pace: 8:13 /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 mi10:23:1121:086:4821:08
6:48
#6337
10K
6.21 mi10:44:4142:386:5221:30
6:55
#6863
15K
9.32 mi11:06:281:04:256:5521:47
7:01
#7171
20K
12.43 mi11:28:181:26:156:5621:50
7:02
#7127
Half
13.11 mi11:33:081:31:056:574:50
7:05
#7175
25K
15.53 mi11:50:451:48:427:0017:37
7:16
#7254
30K
18.64 mi12:16:332:14:307:1325:48
8:18
#8143
20M
20.00 mi12:32:182:30:157:3115:45
11:35
#10360
21M
21.00 mi12:45:062:43:037:4612:48
12:48
#12003
35K
21.75 mi12:52:552:50:527:517:49
10:27
#12679
23M
23.00 mi13:06:423:04:398:0213:47
11:01
#13743
24M
24.00 mi13:16:353:14:328:069:53
9:53
#14247
40K
24.85 mi13:25:103:23:078:108:35
10:02
#14543
25.2M
25.20 mi13:28:403:26:378:123:30
10:09
#14591
Finish
26.22 mi13:37:243:35:218:138:44
8:34
#14645
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi6337579257927705(Top 27%)6752(Top 42%)6752(Top 120%)
10K6.21 mi3.10 mi6863-5266188-3966188-3967399(Top 26%)6576(Top 41%)6576(Top 117%)
15K9.32 mi3.11 mi7171-3086418-2306418-2307705(Top 27%)6752(Top 42%)6752(Top 120%)
20K12.43 mi3.11 mi7127+446365+536365+537052(Top 25%)6244(Top 39%)6244(Top 111%)
Half13.11 mi0.68 mi7175-486402-376402-378199(Top 29%)7038(Top 44%)7038(Top 125%)
25K15.53 mi2.42 mi7254-796435-336435-338108(Top 29%)6833(Top 42%)6833(Top 121%)
30K18.64 mi3.11 mi8143-8896958-5236958-52313537(Top 48%)9386(Top 58%)9386(Top 166%)
20M20.00 mi1.36 mi10360-22178153-11958153-119524692(Top 87%)14313(Top 89%)14313(Top 254%)
21M21.00 mi1.00 mi12003-16438904-7518904-75124781(Top 87%)14257(Top 89%)14257(Top 253%)
35K21.75 mi0.75 mi12679-6769186-2829186-28223033(Top 81%)13397(Top 83%)13397(Top 237%)
23M23.00 mi1.25 mi13743-10649623-4379623-43723232(Top 82%)13444(Top 83%)13444(Top 238%)
24M24.00 mi1.00 mi14247-5049821-1989821-19820984(Top 74%)12334(Top 77%)12334(Top 219%)
40K24.85 mi0.85 mi14543-2969928-1079928-10720547(Top 72%)12058(Top 75%)12058(Top 214%)
25.2M25.20 mi0.35 mi14591-489935-79935-717619(Top 62%)10642(Top 66%)10642(Top 189%)
Finish26.22 mi1.02 mi14645-549933+29933+216644(Top 59%)10218(Top 63%)10218(Top 181%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 27%
×21stories
+97ft-345ft

Overall

7705

Males

6752

M18-39

6752

5K→10K

3.1 - 6.2 mi

Top 26%
×5stories
+79ft-138ft

Overall

7399

Males

6576

M18-39

6576

10K→15K

6.2 - 9.3 mi

Top 27%
×3stories
+67ft-78ft

Overall

7705

Males

6752

M18-39

6752

15K→20K

9.3 - 12.4 mi

Top 25%
×5stories
+106ft-86ft

Overall

7052

Males

6244

M18-39

6244

20K→Half

12.4 - 13.1 mi

Top 29%
×2stories
+19ft-37ft

Overall

8199

Males

7038

M18-39

7038

Half→25K

13.1 - 15.5 mi

Top 29%
×4stories
+66ft-88ft

Overall

8108

Males

6833

M18-39

6833

25K→30K

15.5 - 18.6 mi

Top 48%
×9stories
+181ft-148ft

Overall

13537

Males

9386

M18-39

9386

30K→20M

18.6 - 20.0 mi

Top 87%
×5stories
+64ft-50ft

Overall

24692

Males

14313

M18-39

14313

20M→21M

20.0 - 21.0 mi

Top 87%
×8stories
+106ft-24ft

Overall

24781

Males

14257

M18-39

14257

21M→35K

21.0 - 21.8 mi

Top 81%
×7stories
+17ft-86ft

Overall

23033

Males

13397

M18-39

13397

35K→23M

21.8 - 23.0 mi

Top 82%
×5stories
+23ft-63ft

Overall

23232

Males

13444

M18-39

13444

23M→24M

23.0 - 24.0 mi

Top 74%
×6stories
+12ft-82ft

Overall

20984

Males

12334

M18-39

12334

24M→40K

24.0 - 24.9 mi

Top 72%
×1story
+6ft-20ft

Overall

20547

Males

12058

M18-39

12058

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

17619

Males

10642

M18-39

10642

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2stories
+22ft-21ft

Overall

16644

Males

10218

M18-39

10218

Passing Analysis

Category:
Athletes Passed
558
Passed By
8864
Net Change
-8308
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6337
5K → 10K59585-526#6337#6863
10K → 15K65373-308#6863#7171
15K → 20K165121+44#7171#7127
20K → Half654-48#7127#7175
Half → 25K93172-79#7175#7254
25K → 30K41930-889#7254#8143
30K → 20M62221-2217#8143#10360
20M → 21M01643-1643#10360#12003
21M → 35K8684-676#12003#12679
35K → 23M91073-1064#12679#13743
23M → 24M13517-504#13743#14247
24M → 40K26322-296#14247#14543
40K → 25.2M2068-48#14543#14591
25.2M → Finish47101-54#14591#14645
TOTALS5588864-8308
📊

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