Boston Marathon logo
BOSTON MARATHON 2025

Tommy Shannon

Bib: 5100•M

VA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 11%
Gender (Male)
#0 / 16105
Top 19%
Division (M18-39)
#0 / 5642
Top 41%
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
6:31/mi
20:15
↑ 97↓ 3451.5%
10K· 6.21 mi
6:26/mi
40:13
↑ 79↓ 1380.4%
15K· 9.32 mi
6:27/mi
1:00:16
↑ 67↓ 78
20K· 12.43 mi
6:29/mi
1:20:24
↑ 106↓ 860.1%
Half· 13.11 mi
6:23/mi
1:24:45
↑ 19↓ 370.5%
25K· 15.53 mi
6:30/mi
1:40:30
↑ 66↓ 880.2%
30K· 18.64 mi
6:45/mi
2:01:29
↑ 181↓ 1480.2%
20M
6:54/mi
2:10:51
↑ 64↓ 500.2%
21M
7:25/mi
2:18:16
↑ 106↓ 241.6%
35K· 21.75 mi
6:42/mi
2:23:17
↑ 17↓ 861.7%
23M
6:58/mi
2:32:00
↑ 23↓ 630.6%
24M
6:58/mi
2:38:58
↓ 821.3%
40K· 24.85 mi
7:03/mi
2:45:00
↓ 200.3%
25.2M
7:53/mi
2:47:43
↑ 13↓ 160.2%
Finish· 26.22 mi
6:51/mi
2:54:42
↑ 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
Time1:24:45
Pace6:28 /mi
2nd Half
Distance13.11 mi
Time1:29:57
Pace6:52 /mi
📊Positive Split: 6.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:1520:156:3120:15
6:31
-
10K
6.21 mi10:44:1340:136:2819:58
6:26
-0:05
15K
9.32 mi11:04:161:00:166:2820:03
6:27
+0:01
20K
12.43 mi11:24:241:20:246:2820:08
6:29
+0:02
Half
13.11 mi11:28:451:24:456:284:21
6:23
-0:06
25K
15.53 mi11:44:301:40:306:2815:45
6:30
+0:07
30K
18.64 mi12:05:292:01:296:3120:59
6:45
+0:15
20M
20.00 mi12:14:512:10:516:339:22
6:54
+0:09
21M
21.00 mi12:22:162:18:166:357:25
7:25
+0:31
35K
21.75 mi12:27:172:23:176:355:01
6:42
-0:43
23M
23.00 mi12:36:002:32:006:378:43
6:58
+0:16
24M
24.00 mi12:42:582:38:586:376:58
6:58
0:00
40K
24.85 mi12:49:002:45:006:386:02
7:03
+0:05
25.2M
25.20 mi12:51:432:47:436:392:43
7:53
+0:50
Finish
26.22 mi12:58:422:54:426:406:59
6:51
-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

6:23 /mi

Average Pace

6:40 /mi

Slowest Pace

7:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:40:30

58% of race

Time at Steady Pace

42:21

24% of race

Time at Slower Pace

31:51

18% of race

Average Pace: 6:40 /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 mi10:24:1520:156:3120:15
6:31
#3950
10K
6.21 mi10:44:1340:136:2819:58
6:26
#3563
15K
9.32 mi11:04:161:00:166:2820:03
6:27
#3424
20K
12.43 mi11:24:241:20:246:2820:08
6:29
#3288
Half
13.11 mi11:28:451:24:456:284:21
6:23
#3264
25K
15.53 mi11:44:301:40:306:2815:45
6:30
#3190
30K
18.64 mi12:05:292:01:296:3120:59
6:45
#3138
20M
20.00 mi12:14:512:10:516:339:22
6:54
#3120
21M
21.00 mi12:22:162:18:166:357:25
7:25
#3132
35K
21.75 mi12:27:172:23:176:355:01
6:42
#3129
23M
23.00 mi12:36:002:32:006:378:43
6:58
#3097
24M
24.00 mi12:42:582:38:586:376:58
6:58
#3119
40K
24.85 mi12:49:002:45:006:386:02
7:03
#3120
25.2M
25.20 mi12:51:432:47:436:392:43
7:53
#3124
Finish
26.22 mi12:58:422:54:426:406:59
6:51
#3178
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3950373737373265(Top 11%)3101(Top 19%)3101(Top 55%)
10K6.21 mi3.10 mi3563+3873379+3583379+3583210(Top 11%)3051(Top 19%)3051(Top 54%)
15K9.32 mi3.11 mi3424+1393251+1283251+1283265(Top 11%)3101(Top 19%)3101(Top 55%)
20K12.43 mi3.11 mi3288+1363131+1203131+1203003(Top 11%)2857(Top 18%)2857(Top 51%)
Half13.11 mi0.68 mi3264+243107+243107+242915(Top 10%)2782(Top 17%)2782(Top 49%)
25K15.53 mi2.42 mi3190+743038+693038+692866(Top 10%)2727(Top 17%)2727(Top 48%)
30K18.64 mi3.11 mi3138+522983+552983+553157(Top 11%)2961(Top 18%)2961(Top 52%)
20M20.00 mi1.36 mi3120+182958+252958+253446(Top 12%)3182(Top 20%)3182(Top 56%)
21M21.00 mi1.00 mi3132-122965-72965-74158(Top 15%)3737(Top 23%)3737(Top 66%)
35K21.75 mi0.75 mi3129+32963+22963+23495(Top 12%)3168(Top 20%)3168(Top 56%)
23M23.00 mi1.25 mi3097+322928+352928+353516(Top 12%)3186(Top 20%)3186(Top 56%)
24M24.00 mi1.00 mi3119-222944-162944-164419(Top 16%)3840(Top 24%)3840(Top 68%)
40K24.85 mi0.85 mi3120-1294429444188(Top 15%)3625(Top 23%)3625(Top 64%)
25.2M25.20 mi0.35 mi3124-42941+32941+35192(Top 18%)4213(Top 26%)4213(Top 75%)
Finish26.22 mi1.02 mi3178-542988-472988-474780(Top 17%)3964(Top 25%)3964(Top 70%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
×21story building
+97ft-345ft

Overall

3265

Males

3101

M18-39

3101

5K→10K

3.1 - 6.2 mi

Top 11%
×5story building
+79ft-138ft

Overall

3210

Males

3051

M18-39

3051

10K→15K

6.2 - 9.3 mi

Top 11%
×3story building
+67ft-78ft

Overall

3265

Males

3101

M18-39

3101

15K→20K

9.3 - 12.4 mi

Top 11%
×5story building
+106ft-86ft

Overall

3003

Males

2857

M18-39

2857

20K→Half

12.4 - 13.1 mi

Top 10%
×2story building
+19ft-37ft

Overall

2915

Males

2782

M18-39

2782

Half→25K

13.1 - 15.5 mi

Top 10%
×4story building
+66ft-88ft

Overall

2866

Males

2727

M18-39

2727

25K→30K

15.5 - 18.6 mi

Top 11%
×9story building
+181ft-148ft

Overall

3157

Males

2961

M18-39

2961

30K→20M

18.6 - 20.0 mi

Top 12%
×5story building
+64ft-50ft

Overall

3446

Males

3182

M18-39

3182

20M→21M

20.0 - 21.0 mi

Top 15%
×8story building
+106ft-24ft

Overall

4158

Males

3737

M18-39

3737

21M→35K

21.0 - 21.8 mi

Top 12%
×7story building
+17ft-86ft

Overall

3495

Males

3168

M18-39

3168

35K→23M

21.8 - 23.0 mi

Top 12%
×5story building
+23ft-63ft

Overall

3516

Males

3186

M18-39

3186

23M→24M

23.0 - 24.0 mi

Top 16%
×6story building
+12ft-82ft

Overall

4419

Males

3840

M18-39

3840

24M→40K

24.0 - 24.9 mi

Top 15%
×1story
+6ft-20ft

Overall

4188

Males

3625

M18-39

3625

40K→25.2M

24.9 - 25.2 mi

Top 18%
×1story
+13ft-16ft

Overall

5192

Males

4213

M18-39

4213

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2story building
+22ft-21ft

Overall

4780

Males

3964

M18-39

3964

Passing Analysis

Category:
Athletes Passed
1381
Passed By
609
Net Change
+772
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3950
5K → 10K41629+387#3950#3563
10K → 15K18041+139#3563#3424
15K → 20K16731+136#3424#3288
20K → Half262+24#3288#3264
Half → 25K11137+74#3264#3190
25K → 30K13078+52#3190#3138
30K → 20M7052+18#3138#3120
20M → 21M4153-12#3120#3132
21M → 35K3431+3#3132#3129
35K → 23M7745+32#3129#3097
23M → 24M4062-22#3097#3119
24M → 40K4041-1#3119#3120
40K → 25.2M2226-4#3120#3124
25.2M → Finish2781-54#3124#3178
TOTALS1381609+772
📊

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