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BOSTON MARATHON 2025

Brian Glass

Bib: 11154•M

PA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 28%
Gender (Male)
#0 / 16105
Top 41%
Masters (Masters Men)
#0 / 10463
Top 29%
Division (M45-49)
#0 / 2386
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
7:02/mi
21:52
↑ 97↓ 3451.5%
10K· 6.21 mi
7:05/mi
43:51
↑ 79↓ 1380.4%
15K· 9.32 mi
7:08/mi
1:06:01
↑ 67↓ 78
20K· 12.43 mi
7:17/mi
1:28:40
↑ 106↓ 860.1%
Half· 13.11 mi
7:14/mi
1:33:36
↑ 19↓ 370.5%
25K· 15.53 mi
7:29/mi
1:51:44
↑ 66↓ 880.2%
30K· 18.64 mi
7:32/mi
2:15:07
↑ 181↓ 1480.2%
20M
7:36/mi
2:25:26
↑ 64↓ 500.2%
21M
8:10/mi
2:33:36
↑ 106↓ 241.6%
35K· 21.75 mi
7:26/mi
2:39:10
↑ 17↓ 861.7%
23M
7:53/mi
2:49:02
↑ 23↓ 630.6%
24M
7:37/mi
2:56:39
↓ 821.3%
40K· 24.85 mi
7:38/mi
3:03:11
↓ 200.3%
25.2M
8:22/mi
3:06:04
↑ 13↓ 160.2%
Finish· 26.22 mi
7:15/mi
3:13:27
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:33:36
Pace7:08 /mi
2nd Half
Distance13.11 mi
Time1:39:51
Pace7:37 /mi
📊Positive Split: 6.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:0721:527:0221:52
7:02
-
10K
6.21 mi11:11:0643:517:0321:59
7:05
+0:03
15K
9.32 mi11:33:161:06:017:0522:10
7:08
+0:03
20K
12.43 mi11:55:551:28:407:0822:39
7:17
+0:09
Half
13.11 mi12:00:511:33:367:084:56
7:14
-0:03
25K
15.53 mi12:18:591:51:447:1218:08
7:29
+0:15
30K
18.64 mi12:42:222:15:077:1523:23
7:32
+0:03
20M
20.00 mi12:52:412:25:267:1610:19
7:36
+0:04
21M
21.00 mi13:00:512:33:367:198:10
8:10
+0:34
35K
21.75 mi13:06:252:39:107:195:34
7:26
-0:44
23M
23.00 mi13:16:172:49:027:219:52
7:53
+0:27
24M
24.00 mi13:23:542:56:397:227:37
7:37
-0:16
40K
24.85 mi13:30:263:03:117:226:32
7:38
+0:01
25.2M
25.20 mi13:33:193:06:047:232:53
8:22
+0:44
Finish
26.22 mi13:40:423:13:277:237:23
7:15
-1:07

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

7:02 /mi

Average Pace

7:23 /mi

Slowest Pace

8:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:52:32

89% of race

Time at Steady Pace

18:02

9% of race

Time at Slower Pace

2:53

1% of race

Average Pace: 7:23 /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 mi10:49:0721:527:0221:52
7:02
#8109
10K
6.21 mi11:11:0643:517:0321:59
7:05
#8322
15K
9.32 mi11:33:161:06:017:0522:10
7:08
#8349
20K
12.43 mi11:55:551:28:407:0822:39
7:17
#8411
Half
13.11 mi12:00:511:33:367:084:56
7:14
#8455
25K
15.53 mi12:18:591:51:447:1218:08
7:29
#8609
30K
18.64 mi12:42:222:15:077:1523:23
7:32
#8417
20M
20.00 mi12:52:412:25:267:1610:19
7:36
#8301
21M
21.00 mi13:00:512:33:367:198:10
8:10
#8253
35K
21.75 mi13:06:252:39:107:195:34
7:26
#8216
23M
23.00 mi13:16:172:49:027:219:52
7:53
#8218
24M
24.00 mi13:23:542:56:397:227:37
7:37
#8186
40K
24.85 mi13:30:263:03:117:226:32
7:38
#8140
25.2M
25.20 mi13:33:193:06:047:232:53
8:22
#8122
Finish
26.22 mi13:40:423:13:277:237:23
7:15
#8049
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi8109707270728575(Top 30%)7292(Top 45%)7292(Top 306%)
10K6.21 mi3.10 mi8322-2137188-1167188-1168460(Top 30%)7269(Top 45%)7269(Top 305%)
15K9.32 mi3.11 mi8349-277189-17189-18575(Top 30%)7292(Top 45%)7292(Top 306%)
20K12.43 mi3.11 mi8411-627201-127201-128956(Top 32%)7424(Top 46%)7424(Top 311%)
Half13.11 mi0.68 mi8455-447230-297230-299274(Top 33%)7617(Top 47%)7617(Top 319%)
25K15.53 mi2.42 mi8609-1547307-777307-779766(Top 34%)7731(Top 48%)7731(Top 324%)
30K18.64 mi3.11 mi8417+1927131+1767131+1767927(Top 28%)6536(Top 41%)6536(Top 274%)
20M20.00 mi1.36 mi8301+1167031+1007031+1007611(Top 27%)6213(Top 39%)6213(Top 260%)
21M21.00 mi1.00 mi8253+486966+656966+658353(Top 29%)6453(Top 40%)6453(Top 270%)
35K21.75 mi0.75 mi8216+376924+426924+428179(Top 29%)6402(Top 40%)6402(Top 268%)
23M23.00 mi1.25 mi8218-26879+456879+459115(Top 32%)6773(Top 42%)6773(Top 284%)
24M24.00 mi1.00 mi8186+326821+586821+588510(Top 30%)6386(Top 40%)6386(Top 268%)
40K24.85 mi0.85 mi8140+466766+556766+557682(Top 27%)5820(Top 36%)5820(Top 244%)
25.2M25.20 mi0.35 mi8122+186740+266740+267917(Top 28%)5858(Top 36%)5858(Top 246%)
Finish26.22 mi1.02 mi8049+736658+826658+827339(Top 26%)5524(Top 34%)5524(Top 232%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 30%
×21story building
+97ft-345ft

Overall

8575

Males

7292

M45-49

7292

5K→10K

3.1 - 6.2 mi

Top 30%
×5story building
+79ft-138ft

Overall

8460

Males

7269

M45-49

7269

10K→15K

6.2 - 9.3 mi

Top 30%
×3story building
+67ft-78ft

Overall

8575

Males

7292

M45-49

7292

15K→20K

9.3 - 12.4 mi

Top 32%
×5story building
+106ft-86ft

Overall

8956

Males

7424

M45-49

7424

20K→Half

12.4 - 13.1 mi

Top 33%
×2story building
+19ft-37ft

Overall

9274

Males

7617

M45-49

7617

Half→25K

13.1 - 15.5 mi

Top 34%
×4story building
+66ft-88ft

Overall

9766

Males

7731

M45-49

7731

25K→30K

15.5 - 18.6 mi

Top 28%
×9story building
+181ft-148ft

Overall

7927

Males

6536

M45-49

6536

30K→20M

18.6 - 20.0 mi

Top 27%
×5story building
+64ft-50ft

Overall

7611

Males

6213

M45-49

6213

20M→21M

20.0 - 21.0 mi

Top 29%
×8story building
+106ft-24ft

Overall

8353

Males

6453

M45-49

6453

21M→35K

21.0 - 21.8 mi

Top 29%
×7story building
+17ft-86ft

Overall

8179

Males

6402

M45-49

6402

35K→23M

21.8 - 23.0 mi

Top 32%
×5story building
+23ft-63ft

Overall

9115

Males

6773

M45-49

6773

23M→24M

23.0 - 24.0 mi

Top 30%
×6story building
+12ft-82ft

Overall

8510

Males

6386

M45-49

6386

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7682

Males

5820

M45-49

5820

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

7917

Males

5858

M45-49

5858

25.2M→Finish

25.2 - 26.2 mi

Top 26%
×2story building
+22ft-21ft

Overall

7339

Males

5524

M45-49

5524

Passing Analysis

Category:
Athletes Passed
1622
Passed By
1562
Net Change
+60
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8109
5K → 10K133346-213#8109#8322
10K → 15K138165-27#8322#8349
15K → 20K150212-62#8349#8411
20K → Half1963-44#8411#8455
Half → 25K90244-154#8455#8609
25K → 30K305113+192#8609#8417
30K → 20M15943+116#8417#8301
20M → 21M11163+48#8301#8253
21M → 35K7437+37#8253#8216
35K → 23M111113-2#8216#8218
23M → 24M9462+32#8218#8186
24M → 40K8034+46#8186#8140
40K → 25.2M4022+18#8140#8122
25.2M → Finish11845+73#8122#8049
TOTALS16221562+60
📊

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