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BOSTON MARATHON 2025

Andrew Nelson

Bib: 4880•M

FL

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 11%
Gender (Male)
#0 / 16105
Top 18%
Division (M18-39)
#0 / 5642
Top 40%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:22
Rank: #4233
Start → 5K
20:22 | 6:33/mi
10K· 6.21 mi
40:27
Rank: #3847 (+386)
5K → 10K
20:05 | 6:28/mi
15K· 9.32 mi
1:00:29
Rank: #3611 (+236)
10K → 15K
20:02 | 6:27/mi
20K· 12.43 mi
1:20:37
Rank: #3411 (+200)
15K → 20K
20:08 | 6:29/mi
Half· 13.11 mi
1:25:01
Rank: #3405 (+6)
20K → Half
4:24 | 6:27/mi
25K· 15.53 mi
1:41:08
Rank: #3446 (-41)
Half → 25K
16:07 | 6:39/mi
30K· 18.64 mi
2:01:45
Rank: #3220 (+226)
25K → 30K
20:37 | 6:38/mi
20M
2:10:54
Rank: #3130 (+90)
30K → 20M
9:09 | 6:44/mi
21M
2:17:59
Rank: #3059 (+71)
20M → 21M
7:05 | 7:05/mi
35K· 21.75 mi
2:22:56
Rank: #3027 (+32)
21M → 35K
4:57 | 6:37/mi
23M
2:31:36
Rank: #2985 (+42)
35K → 23M
8:40 | 6:55/mi
24M
2:38:18
Rank: #2968 (+17)
23M → 24M
6:42 | 6:42/mi
40K· 24.85 mi
2:44:18
Rank: #2959 (+9)
24M → 40K
6:00 | 7:01/mi
25.2M
2:47:04
Rank: #2985 (-26)
40K → 25.2M
2:46 | 8:01/mi
Finish· 26.22 mi
2:54:17
Rank: #3058 (-73)
25.2M → Finish
7:13 | 7:05/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:01
Pace6:29 /mi
2nd Half
Distance13.11 mi
Time1:29:16
Pace6:49 /mi
📊Positive Split: 5.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:3420:226:3320:22
6:33
-
10K
6.21 mi10:43:3940:276:3120:05
6:28
-0:05
15K
9.32 mi11:03:411:00:296:2920:02
6:27
-0:01
20K
12.43 mi11:23:491:20:376:2920:08
6:29
+0:02
Half
13.11 mi11:28:131:25:016:294:24
6:27
-0:02
25K
15.53 mi11:44:201:41:086:3116:07
6:39
+0:12
30K
18.64 mi12:04:572:01:456:3220:37
6:38
-0:01
20M
20.00 mi12:14:062:10:546:339:09
6:44
+0:06
21M
21.00 mi12:21:112:17:596:347:05
7:05
+0:21
35K
21.75 mi12:26:082:22:566:344:57
6:37
-0:28
23M
23.00 mi12:34:482:31:366:358:40
6:55
+0:18
24M
24.00 mi12:41:302:38:186:366:42
6:42
-0:13
40K
24.85 mi12:47:302:44:186:376:00
7:01
+0:19
25.2M
25.20 mi12:50:162:47:046:382:46
8:01
+1:00
Finish
26.22 mi12:57:292:54:176:397:13
7:05
-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

6:27 /mi

Average Pace

6:39 /mi

Slowest Pace

8:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

24:26

14% of race

Time at Steady Pace

1:58:07

68% of race

Time at Slower Pace

31:44

18% of race

Average Pace: 6:39 /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 mi10:23:3420:226:3320:22
6:33
#4233
10K
6.21 mi10:43:3940:276:3120:05
6:28
#3847
15K
9.32 mi11:03:411:00:296:2920:02
6:27
#3611
20K
12.43 mi11:23:491:20:376:2920:08
6:29
#3411
Half
13.11 mi11:28:131:25:016:294:24
6:27
#3405
25K
15.53 mi11:44:201:41:086:3116:07
6:39
#3446
30K
18.64 mi12:04:572:01:456:3220:37
6:38
#3220
20M
20.00 mi12:14:062:10:546:339:09
6:44
#3130
21M
21.00 mi12:21:112:17:596:347:05
7:05
#3059
35K
21.75 mi12:26:082:22:566:344:57
6:37
#3027
23M
23.00 mi12:34:482:31:366:358:40
6:55
#2985
24M
24.00 mi12:41:302:38:186:366:42
6:42
#2968
40K
24.85 mi12:47:302:44:186:376:00
7:01
#2959
25.2M
25.20 mi12:50:162:47:046:382:46
8:01
#2985
Finish
26.22 mi12:57:292:54:176:397:13
7:05
#3058
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4233398239823226(Top 11%)3066(Top 19%)3066(Top 54%)
10K6.21 mi3.10 mi3847+3863638+3443638+3443466(Top 12%)3285(Top 20%)3285(Top 58%)
15K9.32 mi3.11 mi3611+2363418+2203418+2203226(Top 11%)3066(Top 19%)3066(Top 54%)
20K12.43 mi3.11 mi3411+2003236+1823236+1823002(Top 11%)2856(Top 18%)2856(Top 51%)
Half13.11 mi0.68 mi3405+63231+53231+53342(Top 12%)3168(Top 20%)3168(Top 56%)
25K15.53 mi2.42 mi3446-413267-363267-363756(Top 13%)3521(Top 22%)3521(Top 62%)
30K18.64 mi3.11 mi3220+2263055+2123055+2122573(Top 9%)2434(Top 15%)2434(Top 43%)
20M20.00 mi1.36 mi3130+902967+882967+882611(Top 9%)2453(Top 15%)2453(Top 43%)
21M21.00 mi1.00 mi3059+712897+702897+702593(Top 9%)2415(Top 15%)2415(Top 43%)
35K21.75 mi0.75 mi3027+322866+312866+313023(Top 11%)2778(Top 17%)2778(Top 49%)
23M23.00 mi1.25 mi2985+422823+432823+433310(Top 12%)3008(Top 19%)3008(Top 53%)
24M24.00 mi1.00 mi2968+172807+162807+162963(Top 10%)2687(Top 17%)2687(Top 48%)
40K24.85 mi0.85 mi2959+92796+112796+113970(Top 14%)3458(Top 21%)3458(Top 61%)
25.2M25.20 mi0.35 mi2985-262818-222818-225950(Top 21%)4676(Top 29%)4676(Top 83%)
Finish26.22 mi1.02 mi3058-732880-622880-626210(Top 22%)4853(Top 30%)4853(Top 86%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
×21stories
+97ft-345ft

Overall

3226

Males

3066

M18-39

3066

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3466

Males

3285

M18-39

3285

10K→15K

6.2 - 9.3 mi

Top 11%
×3stories
+67ft-78ft

Overall

3226

Males

3066

M18-39

3066

15K→20K

9.3 - 12.4 mi

Top 11%
×5stories
+106ft-86ft

Overall

3002

Males

2856

M18-39

2856

20K→Half

12.4 - 13.1 mi

Top 12%
×2stories
+19ft-37ft

Overall

3342

Males

3168

M18-39

3168

Half→25K

13.1 - 15.5 mi

Top 13%
×4stories
+66ft-88ft

Overall

3756

Males

3521

M18-39

3521

25K→30K

15.5 - 18.6 mi

Top 9%
×9stories
+181ft-148ft

Overall

2573

Males

2434

M18-39

2434

30K→20M

18.6 - 20.0 mi

Top 9%
×5stories
+64ft-50ft

Overall

2611

Males

2453

M18-39

2453

20M→21M

20.0 - 21.0 mi

Top 9%
×8stories
+106ft-24ft

Overall

2593

Males

2415

M18-39

2415

21M→35K

21.0 - 21.8 mi

Top 11%
×7stories
+17ft-86ft

Overall

3023

Males

2778

M18-39

2778

35K→23M

21.8 - 23.0 mi

Top 12%
×5stories
+23ft-63ft

Overall

3310

Males

3008

M18-39

3008

23M→24M

23.0 - 24.0 mi

Top 10%
×6stories
+12ft-82ft

Overall

2963

Males

2687

M18-39

2687

24M→40K

24.0 - 24.9 mi

Top 14%
×1story
+6ft-20ft

Overall

3970

Males

3458

M18-39

3458

40K→25.2M

24.9 - 25.2 mi

Top 21%
×1story
+13ft-16ft

Overall

5950

Males

4676

M18-39

4676

25.2M→Finish

25.2 - 26.2 mi

Top 22%
×2stories
+22ft-21ft

Overall

6210

Males

4853

M18-39

4853

Passing Analysis

Category:
Athletes Passed
1645
Passed By
470
Net Change
+1175
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4233
5K → 10K41731+386#4233#3847
10K → 15K25519+236#3847#3611
15K → 20K21919+200#3611#3411
20K → Half1610+6#3411#3405
Half → 25K5697-41#3405#3446
25K → 30K24418+226#3446#3220
30K → 20M10313+90#3220#3130
20M → 21M8211+71#3130#3059
21M → 35K4614+32#3059#3027
35K → 23M8341+42#3027#2985
23M → 24M4528+17#2985#2968
24M → 40K4435+9#2968#2959
40K → 25.2M1137-26#2959#2985
25.2M → Finish2497-73#2985#3058
TOTALS1645470+1175
📊

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