Boston Marathon logo
BOSTON MARATHON 2025

Tristan Williamson

Bib: 26449•M

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Gender (Male)
#0 / 16105
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
8:50/mi
27:27
↑ 97↓ 3451.5%
10K· 6.21 mi
8:20/mi
53:21
↑ 79↓ 1380.4%
15K· 9.32 mi
8:39/mi
1:20:13
↑ 67↓ 78
20K· 12.43 mi
9:49/mi
1:50:43
↑ 106↓ 860.1%
Half· 13.11 mi
9:05/mi
1:56:55
↑ 19↓ 370.5%
25K· 15.53 mi
10:17/mi
2:21:50
↑ 66↓ 880.2%
30K· 18.64 mi
11:12/mi
2:56:38
↑ 181↓ 1480.2%
20M
11:16/mi
3:11:56
↑ 64↓ 500.2%
21M
12:04/mi
3:24:00
↑ 106↓ 241.6%
35K· 21.75 mi
10:54/mi
3:32:09
↑ 17↓ 861.7%
23M
10:58/mi
3:45:53
↑ 23↓ 630.6%
24M
10:59/mi
3:56:52
↓ 821.3%
40K· 24.85 mi
11:36/mi
4:06:47
↓ 200.3%
25.2M
12:11/mi
4:10:59
↑ 13↓ 160.2%
Finish· 26.22 mi
10:08/mi
4:21:19
↑ 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
Time1:56:55
Pace8:55 /mi
2nd Half
Distance13.11 mi
Time2:24:24
Pace11:01 /mi
📊Positive Split: 23.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:43:0227:278:5027:27
8:50
-
10K
6.21 mi12:08:5653:218:3525:54
8:20
-0:30
15K
9.32 mi12:35:481:20:138:3626:52
8:39
+0:19
20K
12.43 mi13:06:181:50:438:5530:30
9:49
+1:10
Half
13.11 mi13:12:301:56:558:556:12
9:05
-0:44
25K
15.53 mi13:37:252:21:509:0824:55
10:17
+1:12
30K
18.64 mi14:12:132:56:389:2934:48
11:12
+0:55
20M
20.00 mi14:27:313:11:569:3615:18
11:16
+0:04
21M
21.00 mi14:39:353:24:009:4312:04
12:04
+0:48
35K
21.75 mi14:47:443:32:099:458:09
10:54
-1:10
23M
23.00 mi15:01:283:45:539:4913:44
10:58
+0:04
24M
24.00 mi15:12:273:56:529:5210:59
10:59
+0:01
40K
24.85 mi15:22:224:06:479:569:55
11:36
+0:37
25.2M
25.20 mi15:26:344:10:599:584:12
12:11
+0:35
Finish
26.22 mi15:36:544:21:199:5810:20
10:08
-2:03

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

8:20 /mi

Average Pace

9:58 /mi

Slowest Pace

12:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:32:10

58% of race

Time at Steady Pace

1:22:58

32% of race

Time at Slower Pace

26:11

10% of race

Average Pace: 9:58 /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 mi11:43:0227:278:5027:27
8:50
#21679
10K
6.21 mi12:08:5653:218:3525:54
8:20
#20317
15K
9.32 mi12:35:481:20:138:3626:52
8:39
#20240
20K
12.43 mi13:06:181:50:438:5530:30
9:49
#21488
Half
13.11 mi13:12:301:56:558:556:12
9:05
#21528
25K
15.53 mi13:37:252:21:509:0824:55
10:17
#22152
30K
18.64 mi14:12:132:56:389:2934:48
11:12
#22739
20M
20.00 mi14:27:313:11:569:3615:18
11:16
#22847
21M
21.00 mi14:39:353:24:009:4312:04
12:04
#22905
35K
21.75 mi14:47:443:32:099:458:09
10:54
#22957
23M
23.00 mi15:01:283:45:539:4913:44
10:58
#22957
24M
24.00 mi15:12:273:56:529:5210:59
10:59
#23016
40K
24.85 mi15:22:224:06:479:569:55
11:36
#23076
25.2M
25.20 mi15:26:344:10:599:584:12
12:11
#23084
Finish
26.22 mi15:36:544:21:199:5810:20
10:08
#23099
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi21679131641316420187(Top 71%)12591(Top 78%)12591(Top 223%)
10K6.21 mi3.10 mi20317+136212601+56312601+56318776(Top 66%)11968(Top 74%)11968(Top 212%)
15K9.32 mi3.11 mi20240+7712576+2512576+2520187(Top 71%)12591(Top 78%)12591(Top 223%)
20K12.43 mi3.11 mi21488-124813115-53913115-53923805(Top 84%)14135(Top 88%)14135(Top 251%)
Half13.11 mi0.68 mi21528-4013134-1913134-1922140(Top 78%)13386(Top 83%)13386(Top 237%)
25K15.53 mi2.42 mi22152-62413405-27113405-27123892(Top 84%)14145(Top 88%)14145(Top 251%)
30K18.64 mi3.11 mi22739-58713641-23613641-23624370(Top 86%)14246(Top 88%)14246(Top 252%)
20M20.00 mi1.36 mi22847-10813655-1413655-1424106(Top 85%)14034(Top 87%)14034(Top 249%)
21M21.00 mi1.00 mi22905-5813668-1313668-1323702(Top 83%)13773(Top 86%)13773(Top 244%)
35K21.75 mi0.75 mi22957-5213678-1013678-1023977(Top 84%)13867(Top 86%)13867(Top 246%)
23M23.00 mi1.25 mi2295713657+2113657+2123139(Top 81%)13394(Top 83%)13394(Top 237%)
24M24.00 mi1.00 mi23016-5913656+113656+123945(Top 84%)13797(Top 86%)13797(Top 245%)
40K24.85 mi0.85 mi23076-6013667-1113667-1124290(Top 86%)13910(Top 86%)13910(Top 247%)
25.2M25.20 mi0.35 mi23084-8136671366723547(Top 83%)13537(Top 84%)13537(Top 240%)
Finish26.22 mi1.02 mi23099-1513664+313664+323330(Top 82%)13428(Top 83%)13428(Top 238%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21story building
+97ft-345ft

Overall

20187

Males

12591

M18-39

12591

5K→10K

3.1 - 6.2 mi

Top 66%
×5story building
+79ft-138ft

Overall

18776

Males

11968

M18-39

11968

10K→15K

6.2 - 9.3 mi

Top 71%
×3story building
+67ft-78ft

Overall

20187

Males

12591

M18-39

12591

15K→20K

9.3 - 12.4 mi

Top 84%
×5story building
+106ft-86ft

Overall

23805

Males

14135

M18-39

14135

20K→Half

12.4 - 13.1 mi

Top 78%
×2story building
+19ft-37ft

Overall

22140

Males

13386

M18-39

13386

Half→25K

13.1 - 15.5 mi

Top 84%
×4story building
+66ft-88ft

Overall

23892

Males

14145

M18-39

14145

25K→30K

15.5 - 18.6 mi

Top 86%
×9story building
+181ft-148ft

Overall

24370

Males

14246

M18-39

14246

30K→20M

18.6 - 20.0 mi

Top 85%
×5story building
+64ft-50ft

Overall

24106

Males

14034

M18-39

14034

20M→21M

20.0 - 21.0 mi

Top 83%
×8story building
+106ft-24ft

Overall

23702

Males

13773

M18-39

13773

21M→35K

21.0 - 21.8 mi

Top 84%
×7story building
+17ft-86ft

Overall

23977

Males

13867

M18-39

13867

35K→23M

21.8 - 23.0 mi

Top 81%
×5story building
+23ft-63ft

Overall

23139

Males

13394

M18-39

13394

23M→24M

23.0 - 24.0 mi

Top 84%
×6story building
+12ft-82ft

Overall

23945

Males

13797

M18-39

13797

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

24290

Males

13910

M18-39

13910

40K→25.2M

24.9 - 25.2 mi

Top 83%
×1story
+13ft-16ft

Overall

23547

Males

13537

M18-39

13537

25.2M→Finish

25.2 - 26.2 mi

Top 82%
×2story building
+22ft-21ft

Overall

23330

Males

13428

M18-39

13428

Passing Analysis

Category:
Athletes Passed
2074
Passed By
3494
Net Change
-1420
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21679
5K → 10K138321+1362#21679#20317
10K → 15K230153+77#20317#20240
15K → 20K371285-1248#20240#21488
20K → Half1959-40#21488#21528
Half → 25K35659-624#21528#22152
25K → 30K56643-587#22152#22739
30K → 20M53161-108#22739#22847
20M → 21M45103-58#22847#22905
21M → 35K2779-52#22905#22957
35K → 23M70700#22957#22957
23M → 24M3897-59#22957#23016
24M → 40K3696-60#23016#23076
40K → 25.2M1220-8#23076#23084
25.2M → Finish3348-15#23084#23099
TOTALS20743494-1420
📊

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