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BOSTON MARATHON 2025

Brian Word-Sims

Bib: 1026•M

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 7%
Gender (Male)
#0 / 16105
Top 12%
Division (M18-39)
#0 / 5642
Top 29%
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
5:49/mi
18:04
↑ 97↓ 3451.5%
10K· 6.21 mi
5:47/mi
36:03
↑ 79↓ 1380.4%
15K· 9.32 mi
5:56/mi
54:28
↑ 67↓ 78
20K· 12.43 mi
6:06/mi
1:13:26
↑ 106↓ 860.1%
Half· 13.11 mi
6:02/mi
1:17:33
↑ 19↓ 370.5%
25K· 15.53 mi
6:20/mi
1:32:55
↑ 66↓ 880.2%
30K· 18.64 mi
6:49/mi
1:54:06
↑ 181↓ 1480.2%
20M
7:09/mi
2:03:49
↑ 64↓ 500.2%
21M
7:40/mi
2:11:29
↑ 106↓ 241.6%
35K· 21.75 mi
7:00/mi
2:16:43
↑ 17↓ 861.7%
23M
7:11/mi
2:25:43
↑ 23↓ 630.6%
24M
6:52/mi
2:32:35
↓ 821.3%
40K· 24.85 mi
7:34/mi
2:39:03
↓ 200.3%
25.2M
7:44/mi
2:41:43
↑ 13↓ 160.2%
Finish· 26.22 mi
7:03/mi
2:48:54
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:17:33
Pace5:55 /mi
2nd Half
Distance13.11 mi
Time1:31:21
Pace6:58 /mi
📊Positive Split: 17.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:2318:045:4918:04
5:49
-
10K
6.21 mi10:36:2236:035:4817:59
5:47
-0:02
15K
9.32 mi10:54:4754:285:5118:25
5:56
+0:09
20K
12.43 mi11:13:451:13:265:5518:58
6:06
+0:10
Half
13.11 mi11:17:521:17:335:554:07
6:02
-0:04
25K
15.53 mi11:33:141:32:555:5915:22
6:20
+0:18
30K
18.64 mi11:54:251:54:066:0721:11
6:49
+0:29
20M
20.00 mi12:04:082:03:496:119:43
7:09
+0:20
21M
21.00 mi12:11:482:11:296:167:40
7:40
+0:31
35K
21.75 mi12:17:022:16:436:175:14
7:00
-0:40
23M
23.00 mi12:26:022:25:436:209:00
7:11
+0:11
24M
24.00 mi12:32:542:32:356:216:52
6:52
-0:19
40K
24.85 mi12:39:222:39:036:246:28
7:34
+0:42
25.2M
25.20 mi12:42:022:41:436:252:40
7:44
+0:10
Finish
26.22 mi12:49:132:48:546:277:11
7:03
-0:41

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

5:47 /mi

Average Pace

6:27 /mi

Slowest Pace

7:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:32:55

55% of race

Time at Steady Pace

59:11

35% of race

Time at Slower Pace

16:48

10% 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 mi10:18:2318:045:4918:04
5:49
#646
10K
6.21 mi10:36:2236:035:4817:59
5:47
#611
15K
9.32 mi10:54:4754:285:5118:25
5:56
#647
20K
12.43 mi11:13:451:13:265:5518:58
6:06
#760
Half
13.11 mi11:17:521:17:335:554:07
6:02
#781
25K
15.53 mi11:33:141:32:555:5915:22
6:20
#902
30K
18.64 mi11:54:251:54:066:0721:11
6:49
#1199
20M
20.00 mi12:04:082:03:496:119:43
7:09
#1354
21M
21.00 mi12:11:482:11:296:167:40
7:40
#1492
35K
21.75 mi12:17:022:16:436:175:14
7:00
#1597
23M
23.00 mi12:26:022:25:436:209:00
7:11
#1716
24M
24.00 mi12:32:542:32:356:216:52
6:52
#1770
40K
24.85 mi12:39:222:39:036:246:28
7:34
#1910
25.2M
25.20 mi12:42:022:41:436:252:40
7:44
#1932
Finish
26.22 mi12:49:132:48:546:277:11
7:03
#2060
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi646599599825(Top 3%)774(Top 5%)774(Top 14%)
10K6.21 mi3.10 mi611+35565+34565+34583(Top 2%)544(Top 3%)544(Top 10%)
15K9.32 mi3.11 mi647-36602-37602-37825(Top 3%)774(Top 5%)774(Top 14%)
20K12.43 mi3.11 mi760-113711-109711-1091188(Top 4%)1123(Top 7%)1123(Top 20%)
Half13.11 mi0.68 mi781-21730-19730-191296(Top 5%)1230(Top 8%)1230(Top 22%)
25K15.53 mi2.42 mi902-121850-120850-1202047(Top 7%)1950(Top 12%)1950(Top 35%)
30K18.64 mi3.11 mi1199-2971131-2811131-2813542(Top 12%)3287(Top 20%)3287(Top 58%)
20M20.00 mi1.36 mi1354-1551278-1471278-1474905(Top 17%)4408(Top 27%)4408(Top 78%)
21M21.00 mi1.00 mi1492-1381412-1341412-1345432(Top 19%)4678(Top 29%)4678(Top 83%)
35K21.75 mi0.75 mi1597-1051513-1011513-1015249(Top 18%)4531(Top 28%)4531(Top 80%)
23M23.00 mi1.25 mi1716-1191626-1131626-1134766(Top 17%)4142(Top 26%)4142(Top 73%)
24M24.00 mi1.00 mi1770-541678-521678-523861(Top 14%)3414(Top 21%)3414(Top 61%)
40K24.85 mi0.85 mi1910-1401810-1321810-1327118(Top 25%)5479(Top 34%)5479(Top 97%)
25.2M25.20 mi0.35 mi1932-221830-201830-204400(Top 15%)3678(Top 23%)3678(Top 65%)
Finish26.22 mi1.02 mi2060-1281954-1241954-1246013(Top 21%)4721(Top 29%)4721(Top 84%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21story building
+97ft-345ft

Overall

825

Males

774

M18-39

774

5K→10K

3.1 - 6.2 mi

Top 2%
×5story building
+79ft-138ft

Overall

583

Males

544

M18-39

544

10K→15K

6.2 - 9.3 mi

Top 3%
×3story building
+67ft-78ft

Overall

825

Males

774

M18-39

774

15K→20K

9.3 - 12.4 mi

Top 4%
×5story building
+106ft-86ft

Overall

1188

Males

1123

M18-39

1123

20K→Half

12.4 - 13.1 mi

Top 5%
×2story building
+19ft-37ft

Overall

1296

Males

1230

M18-39

1230

Half→25K

13.1 - 15.5 mi

Top 7%
×4story building
+66ft-88ft

Overall

2047

Males

1950

M18-39

1950

25K→30K

15.5 - 18.6 mi

Top 12%
×9story building
+181ft-148ft

Overall

3542

Males

3287

M18-39

3287

30K→20M

18.6 - 20.0 mi

Top 17%
×5story building
+64ft-50ft

Overall

4905

Males

4408

M18-39

4408

20M→21M

20.0 - 21.0 mi

Top 19%
×8story building
+106ft-24ft

Overall

5432

Males

4678

M18-39

4678

21M→35K

21.0 - 21.8 mi

Top 18%
×7story building
+17ft-86ft

Overall

5249

Males

4531

M18-39

4531

35K→23M

21.8 - 23.0 mi

Top 17%
×5story building
+23ft-63ft

Overall

4766

Males

4142

M18-39

4142

23M→24M

23.0 - 24.0 mi

Top 14%
×6story building
+12ft-82ft

Overall

3861

Males

3414

M18-39

3414

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

7118

Males

5479

M18-39

5479

40K→25.2M

24.9 - 25.2 mi

Top 15%
×1story
+13ft-16ft

Overall

4400

Males

3678

M18-39

3678

25.2M→Finish

25.2 - 26.2 mi

Top 21%
×2story building
+22ft-21ft

Overall

6013

Males

4721

M18-39

4721

Passing Analysis

Category:
Athletes Passed
151
Passed By
1565
Net Change
-1414
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#646
5K → 10K5015+35#646#611
10K → 15K844-36#611#647
15K → 20K6119-113#647#760
20K → Half021-21#760#781
Half → 25K4125-121#781#902
25K → 30K6303-297#902#1199
30K → 20M10165-155#1199#1354
20M → 21M4142-138#1354#1492
21M → 35K10115-105#1492#1597
35K → 23M18137-119#1597#1716
23M → 24M1872-54#1716#1770
24M → 40K6146-140#1770#1910
40K → 25.2M628-22#1910#1932
25.2M → Finish5133-128#1932#2060
TOTALS1511565-1414
📊

Passing Visuals

Category:
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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