Boston Marathon logo
BOSTON MARATHON 2025

Nathan Sicher

Bib: 4070•M

MO

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Top 7%
Gender (Male)
#0 / 16105
Top 12%
Masters (Masters Men)
#0 / 10463
Top 3%
Division (M40-44)
#0 / 2247
Top 10%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:03
Rank: #3466
Start → 5K
20:03 | 6:27/mi
10K· 6.21 mi
40:07
Rank: #3440 (+26)
5K → 10K
20:04 | 6:28/mi
15K· 9.32 mi
1:00:32
Rank: #3652 (-212)
10K → 15K
20:25 | 6:34/mi
20K· 12.43 mi
1:21:00
Rank: #3641 (+11)
15K → 20K
20:28 | 6:35/mi
Half· 13.11 mi
1:25:18
Rank: #3557 (+84)
20K → Half
4:18 | 6:18/mi
25K· 15.53 mi
1:40:38
Rank: #3237 (+320)
Half → 25K
15:20 | 6:19/mi
30K· 18.64 mi
2:00:28
Rank: #2800 (+437)
25K → 30K
19:50 | 6:23/mi
20M
2:09:00
Rank: #2571 (+229)
30K → 20M
8:32 | 6:17/mi
21M
2:15:36
Rank: #2421 (+150)
20M → 21M
6:36 | 6:36/mi
35K· 21.75 mi
2:20:30
Rank: #2407 (+14)
21M → 35K
4:54 | 6:33/mi
23M
2:28:35
Rank: #2307 (+100)
35K → 23M
8:05 | 6:27/mi
24M
2:34:46
Rank: #2197 (+110)
23M → 24M
6:11 | 6:11/mi
40K· 24.85 mi
2:40:08
Rank: #2110 (+87)
24M → 40K
5:22 | 6:17/mi
25.2M
2:42:30
Rank: #2082 (+28)
40K → 25.2M
2:22 | 6:52/mi
Finish· 26.22 mi
2:48:45
Rank: #2025 (+57)
25.2M → Finish
6:15 | 6:08/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via Half
Distance13.11 mi
Time1:25:18
Pace6:30 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:23:27
Pace6:22 /mi
📊Negative Split: 2.2% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:2420:036:2720:03
6:27
-
10K
6.21 mi10:45:2840:076:2720:04
6:28
+0:01
15K
9.32 mi11:05:531:00:326:3020:25
6:34
+0:06
20K
12.43 mi11:26:211:21:006:3120:28
6:35
+0:01
Half
13.11 mi11:30:391:25:186:304:18
6:18
-0:17
25K
15.53 mi11:45:591:40:386:2915:20
6:19
+0:01
30K
18.64 mi12:05:492:00:286:2819:50
6:23
+0:04
20M
20.00 mi12:14:212:09:006:278:32
6:17
-0:06
21M
21.00 mi12:20:572:15:366:276:36
6:36
+0:19
35K
21.75 mi12:25:512:20:306:284:54
6:33
-0:03
23M
23.00 mi12:33:562:28:356:288:05
6:27
-0:06
24M
24.00 mi12:40:072:34:466:276:11
6:11
-0:16
40K
24.85 mi12:45:292:40:086:275:22
6:17
+0:06
25.2M
25.20 mi12:47:512:42:306:272:22
6:52
+0:35
Finish
26.22 mi12:54:062:48:456:266:15
6:08
-0:44

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

6:08 /mi

Average Pace

6:26 /mi

Slowest Pace

6:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:46:23

99% of race

Time at Steady Pace

2:22

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:26 /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 mi10:25:2420:036:2720:03
6:27
#3466
10K
6.21 mi10:45:2840:076:2720:04
6:28
#3440
15K
9.32 mi11:05:531:00:326:3020:25
6:34
#3652
20K
12.43 mi11:26:211:21:006:3120:28
6:35
#3641
Half
13.11 mi11:30:391:25:186:304:18
6:18
#3557
25K
15.53 mi11:45:591:40:386:2915:20
6:19
#3237
30K
18.64 mi12:05:492:00:286:2819:50
6:23
#2800
20M
20.00 mi12:14:212:09:006:278:32
6:17
#2571
21M
21.00 mi12:20:572:15:366:276:36
6:36
#2421
35K
21.75 mi12:25:512:20:306:284:54
6:33
#2407
23M
23.00 mi12:33:562:28:356:288:05
6:27
#2307
24M
24.00 mi12:40:072:34:466:276:11
6:11
#2197
40K
24.85 mi12:45:292:40:086:275:22
6:17
#2110
25.2M
25.20 mi12:47:512:42:306:272:22
6:52
#2082
Finish
26.22 mi12:54:062:48:456:266:15
6:08
#2025
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi3466329332934014(Top 14%)3779(Top 23%)3779(Top 168%)
10K6.21 mi3.10 mi3440+263266+273266+273409(Top 12%)3233(Top 20%)3233(Top 144%)
15K9.32 mi3.11 mi3652-2123454-1883454-1884014(Top 14%)3779(Top 23%)3779(Top 168%)
20K12.43 mi3.11 mi3641+113445+93445+93609(Top 13%)3408(Top 21%)3408(Top 152%)
Half13.11 mi0.68 mi3557+843369+763369+762479(Top 9%)2368(Top 15%)2368(Top 105%)
25K15.53 mi2.42 mi3237+3203082+2873082+2871973(Top 7%)1877(Top 12%)1877(Top 84%)
30K18.64 mi3.11 mi2800+4372668+4142668+4141485(Top 5%)1405(Top 9%)1405(Top 63%)
20M20.00 mi1.36 mi2571+2292455+2132455+213920(Top 3%)868(Top 5%)868(Top 39%)
21M21.00 mi1.00 mi2421+1502308+1472308+147923(Top 3%)873(Top 5%)873(Top 39%)
35K21.75 mi0.75 mi2407+142296+122296+122675(Top 9%)2473(Top 15%)2473(Top 110%)
23M23.00 mi1.25 mi2307+1002199+972199+971323(Top 5%)1244(Top 8%)1244(Top 55%)
24M24.00 mi1.00 mi2197+1102090+1092090+109980(Top 3%)922(Top 6%)922(Top 41%)
40K24.85 mi0.85 mi2110+872004+862004+86924(Top 3%)866(Top 5%)866(Top 39%)
25.2M25.20 mi0.35 mi2082+281976+281976+281137(Top 4%)1047(Top 7%)1047(Top 47%)
Finish26.22 mi1.02 mi2025+571920+561920+561309(Top 5%)1222(Top 8%)1222(Top 54%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21stories
+97ft-345ft

Overall

4014

Males

3779

M40-44

3779

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3409

Males

3233

M40-44

3233

10K→15K

6.2 - 9.3 mi

Top 14%
×3stories
+67ft-78ft

Overall

4014

Males

3779

M40-44

3779

15K→20K

9.3 - 12.4 mi

Top 13%
×5stories
+106ft-86ft

Overall

3609

Males

3408

M40-44

3408

20K→Half

12.4 - 13.1 mi

Top 9%
×2stories
+19ft-37ft

Overall

2479

Males

2368

M40-44

2368

Half→25K

13.1 - 15.5 mi

Top 7%
×4stories
+66ft-88ft

Overall

1973

Males

1877

M40-44

1877

25K→30K

15.5 - 18.6 mi

Top 5%
×9stories
+181ft-148ft

Overall

1485

Males

1405

M40-44

1405

30K→20M

18.6 - 20.0 mi

Top 3%
×5stories
+64ft-50ft

Overall

920

Males

868

M40-44

868

20M→21M

20.0 - 21.0 mi

Top 3%
×8stories
+106ft-24ft

Overall

923

Males

873

M40-44

873

21M→35K

21.0 - 21.8 mi

Top 9%
×7stories
+17ft-86ft

Overall

2675

Males

2473

M40-44

2473

35K→23M

21.8 - 23.0 mi

Top 5%
×5stories
+23ft-63ft

Overall

1323

Males

1244

M40-44

1244

23M→24M

23.0 - 24.0 mi

Top 3%
×6stories
+12ft-82ft

Overall

980

Males

922

M40-44

922

24M→40K

24.0 - 24.9 mi

Top 3%
×1story
+6ft-20ft

Overall

924

Males

866

M40-44

866

40K→25.2M

24.9 - 25.2 mi

Top 4%
×1story
+13ft-16ft

Overall

1137

Males

1047

M40-44

1047

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×2stories
+22ft-21ft

Overall

1309

Males

1222

M40-44

1222

Passing Analysis

Category:
Athletes Passed
1944
Passed By
503
Net Change
+1441
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3466
5K → 10K140114+26#3466#3440
10K → 15K42254-212#3440#3652
15K → 20K9685+11#3652#3641
20K → Half840+84#3641#3557
Half → 25K3222+320#3557#3237
25K → 30K4403+437#3237#2800
30K → 20M2290+229#2800#2571
20M → 21M1500+150#2571#2421
21M → 35K3723+14#2421#2407
35K → 23M1044+100#2407#2307
23M → 24M1122+110#2307#2197
24M → 40K903+87#2197#2110
40K → 25.2M335+28#2110#2082
25.2M → Finish658+57#2082#2025
TOTALS1944503+1441
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing