Boston Marathon logo
BOSTON MARATHON 2025

Daniel Nathan

Bib: 31855•M

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 33%
Gender (Male)
#0 / 16105
Top 46%
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:18/mi
22:41
↑ 97↓ 3451.5%
10K· 6.21 mi
7:13/mi
45:06
↑ 79↓ 1380.4%
15K· 9.32 mi
7:15/mi
1:07:39
↑ 67↓ 78
20K· 12.43 mi
7:24/mi
1:30:37
↑ 106↓ 860.1%
Half· 13.11 mi
7:12/mi
1:35:32
↑ 19↓ 370.5%
25K· 15.53 mi
7:26/mi
1:53:33
↑ 66↓ 880.2%
30K· 18.64 mi
7:47/mi
2:17:45
↑ 181↓ 1480.2%
20M
8:02/mi
2:28:40
↑ 64↓ 500.2%
21M
8:22/mi
2:37:02
↑ 106↓ 241.6%
35K· 21.75 mi
7:32/mi
2:42:40
↑ 17↓ 861.7%
23M
7:58/mi
2:52:38
↑ 23↓ 630.6%
24M
7:46/mi
3:00:24
↓ 821.3%
40K· 24.85 mi
7:49/mi
3:07:05
↓ 200.3%
25.2M
8:27/mi
3:10:00
↑ 13↓ 160.2%
Finish· 26.22 mi
7:33/mi
3:17:42
↑ 22↓ 21

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 HalfFaster
Distance13.11 mi
Time1:35:32
Pace7:17 /mi
2nd Half
Distance13.11 mi
Time1:42:10
Pace7:48 /mi
📊Positive Split: 6.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:43:3222:417:1822:41
7:18
-
10K
6.21 mi12:05:5745:067:1522:25
7:13
-0:05
15K
9.32 mi12:28:301:07:397:1522:33
7:15
+0:02
20K
12.43 mi12:51:281:30:377:1822:58
7:24
+0:09
Half
13.11 mi12:56:231:35:327:174:55
7:12
-0:12
25K
15.53 mi13:14:241:53:337:1918:01
7:26
+0:14
30K
18.64 mi13:38:362:17:457:2324:12
7:47
+0:21
20M
20.00 mi13:49:312:28:407:2610:55
8:02
+0:15
21M
21.00 mi13:57:532:37:027:298:22
8:22
+0:20
35K
21.75 mi14:03:312:42:407:295:38
7:32
-0:50
23M
23.00 mi14:13:292:52:387:309:58
7:58
+0:26
24M
24.00 mi14:21:153:00:247:317:46
7:46
-0:12
40K
24.85 mi14:27:563:07:057:326:41
7:49
+0:03
25.2M
25.20 mi14:30:513:10:007:322:55
8:27
+0:38
Finish
26.22 mi14:38:333:17:427:337:42
7:33
-0:54

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

7:12 /mi

Average Pace

7:33 /mi

Slowest Pace

8:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:45:32

84% of race

Time at Steady Pace

32:10

16% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:32 /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 mi11:43:3222:417:1822:41
7:18
#10362
10K
6.21 mi12:05:5745:067:1522:25
7:13
#9961
15K
9.32 mi12:28:301:07:397:1522:33
7:15
#9826
20K
12.43 mi12:51:281:30:377:1822:58
7:24
#9792
Half
13.11 mi12:56:231:35:327:174:55
7:12
#9753
25K
15.53 mi13:14:241:53:337:1918:01
7:26
#9656
30K
18.64 mi13:38:362:17:457:2324:12
7:47
#9616
20M
20.00 mi13:49:312:28:407:2610:55
8:02
#9663
21M
21.00 mi13:57:532:37:027:298:22
8:22
#9615
35K
21.75 mi14:03:312:42:407:295:38
7:32
#9568
23M
23.00 mi14:13:292:52:387:309:58
7:58
#9547
24M
24.00 mi14:21:153:00:247:317:46
7:46
#9513
40K
24.85 mi14:27:563:07:057:326:41
7:49
#9472
25.2M
25.20 mi14:30:513:10:007:322:55
8:27
#9439
Finish
26.22 mi14:38:333:17:427:337:42
7:33
#9423
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi10362836583659618(Top 34%)7879(Top 49%)7879(Top 140%)
10K6.21 mi3.10 mi9961+4018148+2178148+2179614(Top 34%)7939(Top 49%)7939(Top 141%)
15K9.32 mi3.11 mi9826+1358042+1068042+1069618(Top 34%)7879(Top 49%)7879(Top 140%)
20K12.43 mi3.11 mi9792+347993+497993+499830(Top 35%)7914(Top 49%)7914(Top 140%)
Half13.11 mi0.68 mi9753+397970+237970+239110(Top 32%)7542(Top 47%)7542(Top 134%)
25K15.53 mi2.42 mi9656+977882+887882+889374(Top 33%)7541(Top 47%)7541(Top 134%)
30K18.64 mi3.11 mi9616+407802+807802+809848(Top 35%)7604(Top 47%)7604(Top 135%)
20M20.00 mi1.36 mi9663-477796+67796+610640(Top 37%)7848(Top 49%)7848(Top 139%)
21M21.00 mi1.00 mi9615+487745+517745+519614(Top 34%)7157(Top 44%)7157(Top 127%)
35K21.75 mi0.75 mi9568+477700+457700+458819(Top 31%)6750(Top 42%)6750(Top 120%)
23M23.00 mi1.25 mi9547+217641+597641+599719(Top 34%)7087(Top 44%)7087(Top 126%)
24M24.00 mi1.00 mi9513+347582+597582+599542(Top 34%)6934(Top 43%)6934(Top 123%)
40K24.85 mi0.85 mi9472+417530+527530+528864(Top 31%)6446(Top 40%)6446(Top 114%)
25.2M25.20 mi0.35 mi9439+337489+417489+418521(Top 30%)6206(Top 39%)6206(Top 110%)
Finish26.22 mi1.02 mi9423+167446+437446+439577(Top 34%)6749(Top 42%)6749(Top 120%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21story building
+97ft-345ft

Overall

9618

Males

7879

M18-39

7879

5K→10K

3.1 - 6.2 mi

Top 34%
×5story building
+79ft-138ft

Overall

9614

Males

7939

M18-39

7939

10K→15K

6.2 - 9.3 mi

Top 34%
×3story building
+67ft-78ft

Overall

9618

Males

7879

M18-39

7879

15K→20K

9.3 - 12.4 mi

Top 35%
×5story building
+106ft-86ft

Overall

9830

Males

7914

M18-39

7914

20K→Half

12.4 - 13.1 mi

Top 32%
×2story building
+19ft-37ft

Overall

9110

Males

7542

M18-39

7542

Half→25K

13.1 - 15.5 mi

Top 33%
×4story building
+66ft-88ft

Overall

9374

Males

7541

M18-39

7541

25K→30K

15.5 - 18.6 mi

Top 35%
×9story building
+181ft-148ft

Overall

9848

Males

7604

M18-39

7604

30K→20M

18.6 - 20.0 mi

Top 37%
×5story building
+64ft-50ft

Overall

10640

Males

7848

M18-39

7848

20M→21M

20.0 - 21.0 mi

Top 34%
×8story building
+106ft-24ft

Overall

9614

Males

7157

M18-39

7157

21M→35K

21.0 - 21.8 mi

Top 31%
×7story building
+17ft-86ft

Overall

8819

Males

6750

M18-39

6750

35K→23M

21.8 - 23.0 mi

Top 34%
×5story building
+23ft-63ft

Overall

9719

Males

7087

M18-39

7087

23M→24M

23.0 - 24.0 mi

Top 34%
×6story building
+12ft-82ft

Overall

9542

Males

6934

M18-39

6934

24M→40K

24.0 - 24.9 mi

Top 31%
×1story
+6ft-20ft

Overall

8864

Males

6446

M18-39

6446

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

8521

Males

6206

M18-39

6206

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2story building
+22ft-21ft

Overall

9577

Males

6749

M18-39

6749

Passing Analysis

Category:
Athletes Passed
2160*
Passed By
1220
Net Change
+939
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10362
5K → 10K503*102+401#10362#9961
10K → 15K241106+135#9961#9826
15K → 20K195161+34#9826#9792
20K → Half5516+39#9792#9753
Half → 25K198101+97#9753#9656
25K → 30K249209+40#9656#9616
30K → 20M85131-47#9616#9663
20M → 21M11163+48#9663#9615
21M → 35K8033+47#9615#9568
35K → 23M123102+21#9568#9547
23M → 24M9965+34#9547#9513
24M → 40K8645+41#9513#9472
40K → 25.2M5724+33#9472#9439
25.2M → Finish7862+16#9439#9423
TOTALS2160*1220+939

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing