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BOSTON MARATHON 2025

Chantz Lund

Bib: 2163•M

ID

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 7%
Gender (Male)
#0 / 16105
Top 12%
Division (M18-39)
#0 / 5642
Top 29%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:16
Rank: #1871
Start → 5K
6:12/mi
19:16 split
10K· 6.21 mi
38:29
Rank: #1836 (+35)
5K → 10K
6:11/mi
19:13 split
15K· 9.32 mi
57:42
Rank: #1813 (+23)
10K → 15K
6:11/mi
19:13 split
20K· 12.43 mi
1:16:54
Rank: #1710 (+103)
15K → 20K
6:11/mi
19:12 split
Half· 13.11 mi
1:21:09
Rank: #1724 (-14)
20K → Half
6:14/mi
4:15 split
25K· 15.53 mi
1:36:18
Rank: #1679 (+45)
Half → 25K
6:15/mi
15:09 split
30K· 18.64 mi
1:56:55
Rank: #1813 (-134)
25K → 30K
6:38/mi
20:37 split
20M
2:06:30
Rank: #1952 (-139)
30K → 20M
7:03/mi
9:35 split
21M
2:13:46
Rank: #2009 (-57)
20M → 21M
7:16/mi
7:16 split
35K· 21.75 mi
2:18:45
Rank: #2034 (-25)
21M → 35K
6:40/mi
4:59 split
23M
2:27:21
Rank: #2055 (-21)
35K → 23M
6:52/mi
8:36 split
24M
2:34:05
Rank: #2065 (-10)
23M → 24M
6:44/mi
6:44 split
40K· 24.85 mi
2:39:57
Rank: #2067 (-2)
24M → 40K
6:52/mi
5:52 split
25.2M
2:42:31
Rank: #2087 (-20)
40K → 25.2M
7:27/mi
2:34 split
Finish· 26.22 mi
2:49:03
Rank: #2090 (-3)
25.2M → Finish
6:25/mi
6:32 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:21:09
Pace6:11 /mi
2nd Half
Distance13.11 mi
Time1:27:54
Pace6:42 /mi
📊Positive Split: 8.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:4719:166:1219:16
6:12
-
10K
6.21 mi10:39:0038:296:1219:13
6:11
-0:01
15K
9.32 mi10:58:1357:426:1119:13
6:11
0:00
20K
12.43 mi11:17:251:16:546:1119:12
6:11
0:00
Half
13.11 mi11:21:401:21:096:114:15
6:14
+0:03
25K
15.53 mi11:36:491:36:186:1215:09
6:15
+0:01
30K
18.64 mi11:57:261:56:556:1620:37
6:38
+0:23
20M
20.00 mi12:07:012:06:306:199:35
7:03
+0:25
21M
21.00 mi12:14:172:13:466:227:16
7:16
+0:13
35K
21.75 mi12:19:162:18:456:234:59
6:40
-0:36
23M
23.00 mi12:27:522:27:216:248:36
6:52
+0:12
24M
24.00 mi12:34:362:34:056:256:44
6:44
-0:08
40K
24.85 mi12:40:282:39:576:265:52
6:52
+0:08
25.2M
25.20 mi12:43:022:42:316:272:34
7:27
+0:35
Finish
26.22 mi12:49:342:49:036:276:32
6:25
-1:02

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

6:11 /mi

Average Pace

6:27 /mi

Slowest Pace

7:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:42:50

61% of race

Time at Steady Pace

32:20

19% of race

Time at Slower Pace

33:53

20% of race

Average Pace: 6:27 /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 mi10:19:4719:166:1219:16
6:12
#1871
10K
6.21 mi10:39:0038:296:1219:13
6:11
#1836
15K
9.32 mi10:58:1357:426:1119:13
6:11
#1813
20K
12.43 mi11:17:251:16:546:1119:12
6:11
#1710
Half
13.11 mi11:21:401:21:096:114:15
6:14
#1724
25K
15.53 mi11:36:491:36:186:1215:09
6:15
#1679
30K
18.64 mi11:57:261:56:556:1620:37
6:38
#1813
20M
20.00 mi12:07:012:06:306:199:35
7:03
#1952
21M
21.00 mi12:14:172:13:466:227:16
7:16
#2009
35K
21.75 mi12:19:162:18:456:234:59
6:40
#2034
23M
23.00 mi12:27:522:27:216:248:36
6:52
#2055
24M
24.00 mi12:34:362:34:056:256:44
6:44
#2065
40K
24.85 mi12:40:282:39:576:265:52
6:52
#2067
25.2M
25.20 mi12:43:022:42:316:272:34
7:27
#2087
Finish
26.22 mi12:49:342:49:036:276:32
6:25
#2090
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1871177717771780(Top 6%)1692(Top 11%)1692(Top 30%)
10K6.21 mi3.10 mi1836+351746+311746+311832(Top 6%)1740(Top 11%)1740(Top 31%)
15K9.32 mi3.11 mi1813+231725+211725+211780(Top 6%)1692(Top 11%)1692(Top 30%)
20K12.43 mi3.11 mi1710+1031625+1001625+1001501(Top 5%)1423(Top 9%)1423(Top 25%)
Half13.11 mi0.68 mi1724-141638-131638-132108(Top 7%)2012(Top 12%)2012(Top 36%)
25K15.53 mi2.42 mi1679+451596+421596+421644(Top 6%)1564(Top 10%)1564(Top 28%)
30K18.64 mi3.11 mi1813-1341726-1301726-1302556(Top 9%)2417(Top 15%)2417(Top 43%)
20M20.00 mi1.36 mi1952-1391858-1321858-1324375(Top 15%)3981(Top 25%)3981(Top 71%)
21M21.00 mi1.00 mi2009-571912-541912-543421(Top 12%)3133(Top 19%)3133(Top 56%)
35K21.75 mi0.75 mi2034-251934-221934-223233(Top 11%)2949(Top 18%)2949(Top 52%)
23M23.00 mi1.25 mi2055-211954-201954-203022(Top 11%)2761(Top 17%)2761(Top 49%)
24M24.00 mi1.00 mi2065-101962-81962-83112(Top 11%)2808(Top 17%)2808(Top 50%)
40K24.85 mi0.85 mi2067-2196219623125(Top 11%)2798(Top 17%)2798(Top 50%)
25.2M25.20 mi0.35 mi2087-201981-191981-193080(Top 11%)2721(Top 17%)2721(Top 48%)
Finish26.22 mi1.02 mi2090-31983-21983-22346(Top 8%)2138(Top 13%)2138(Top 38%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 6%
×21stories
+97ft-345ft

Overall

1780

Males

1692

M18-39

1692

5K→10K

3.1 - 6.2 mi

Top 6%
×5stories
+79ft-138ft

Overall

1832

Males

1740

M18-39

1740

10K→15K

6.2 - 9.3 mi

Top 6%
×3stories
+67ft-78ft

Overall

1780

Males

1692

M18-39

1692

15K→20K

9.3 - 12.4 mi

Top 5%
×5stories
+106ft-86ft

Overall

1501

Males

1423

M18-39

1423

20K→Half

12.4 - 13.1 mi

Top 7%
×2stories
+19ft-37ft

Overall

2108

Males

2012

M18-39

2012

Half→25K

13.1 - 15.5 mi

Top 6%
×4stories
+66ft-88ft

Overall

1644

Males

1564

M18-39

1564

25K→30K

15.5 - 18.6 mi

Top 9%
×9stories
+181ft-148ft

Overall

2556

Males

2417

M18-39

2417

30K→20M

18.6 - 20.0 mi

Top 15%
×5stories
+64ft-50ft

Overall

4375

Males

3981

M18-39

3981

20M→21M

20.0 - 21.0 mi

Top 12%
×8stories
+106ft-24ft

Overall

3421

Males

3133

M18-39

3133

21M→35K

21.0 - 21.8 mi

Top 11%
×7stories
+17ft-86ft

Overall

3233

Males

2949

M18-39

2949

35K→23M

21.8 - 23.0 mi

Top 11%
×5stories
+23ft-63ft

Overall

3022

Males

2761

M18-39

2761

23M→24M

23.0 - 24.0 mi

Top 11%
×6stories
+12ft-82ft

Overall

3112

Males

2808

M18-39

2808

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

3125

Males

2798

M18-39

2798

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

3080

Males

2721

M18-39

2721

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2stories
+22ft-21ft

Overall

2346

Males

2138

M18-39

2138

Passing Analysis

Category:
Athletes Passed
599
Passed By
818
Net Change
-219
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1871
5K → 10K11782+35#1871#1836
10K → 15K6441+23#1836#1813
15K → 20K1129+103#1813#1710
20K → Half418-14#1710#1724
Half → 25K6924+45#1724#1679
25K → 30K36170-134#1679#1813
30K → 20M10149-139#1813#1952
20M → 21M2178-57#1952#2009
21M → 35K2550-25#2009#2034
35K → 23M3960-21#2034#2055
23M → 24M3646-10#2055#2065
24M → 40K3638-2#2065#2067
40K → 25.2M424-20#2067#2087
25.2M → Finish2629-3#2087#2090
TOTALS599818-219
📊

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