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BOSTON MARATHON 2025

Alison Glynn

Bib: 21736•F

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 47%
Masters (Masters Women)
#0 / 6759
Top 35%
Division (F45-49)
#0 / 1813
Top 43%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:24
Rank: #17949
Start → 5K
25:24 | 8:11/mi
10K· 6.21 mi
50:52
Rank: #17885 (+64)
5K → 10K
25:28 | 8:12/mi
15K· 9.32 mi
1:16:39
Rank: #17917 (-32)
10K → 15K
25:47 | 8:18/mi
20K· 12.43 mi
1:43:01
Rank: #17936 (-19)
15K → 20K
26:22 | 8:29/mi
Half· 13.11 mi
1:48:40
Rank: #17909 (+27)
20K → Half
5:39 | 8:17/mi
25K· 15.53 mi
2:09:12
Rank: #17693 (+216)
Half → 25K
20:32 | 8:28/mi
30K· 18.64 mi
2:36:44
Rank: #17521 (+172)
25K → 30K
27:32 | 8:52/mi
20M
2:49:03
Rank: #17472 (+49)
30K → 20M
12:19 | 9:04/mi
21M
2:59:04
Rank: #17529 (-57)
20M → 21M
10:01 | 10:01/mi
35K· 21.75 mi
3:05:09
Rank: #17356 (+173)
21M → 35K
6:05 | 8:08/mi
23M
3:15:48
Rank: #17099 (+257)
35K → 23M
10:39 | 8:30/mi
24M
3:24:09
Rank: #16925 (+174)
23M → 24M
8:21 | 8:21/mi
40K· 24.85 mi
3:31:19
Rank: #16751 (+174)
24M → 40K
7:10 | 8:23/mi
25.2M
3:34:31
Rank: #16696 (+55)
40K → 25.2M
3:12 | 9:17/mi
Finish· 26.22 mi
3:42:46
Rank: #16565 (+131)
25.2M → Finish
8:15 | 8:06/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:40
Pace8:17 /mi
2nd Half
Distance13.11 mi
Time1:54:06
Pace8:42 /mi
📊Positive Split: 5.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:1325:248:1125:24
8:11
-
10K
6.21 mi11:46:4150:528:1125:28
8:12
+0:01
15K
9.32 mi12:12:281:16:398:1325:47
8:18
+0:06
20K
12.43 mi12:38:501:43:018:1726:22
8:29
+0:11
Half
13.11 mi12:44:291:48:408:175:39
8:17
-0:12
25K
15.53 mi13:05:012:09:128:1920:32
8:28
+0:11
30K
18.64 mi13:32:332:36:448:2427:32
8:52
+0:24
20M
20.00 mi13:44:522:49:038:2712:19
9:04
+0:12
21M
21.00 mi13:54:532:59:048:3210:01
10:01
+0:57
35K
21.75 mi14:00:583:05:098:316:05
8:08
-1:53
23M
23.00 mi14:11:373:15:488:3110:39
8:30
+0:22
24M
24.00 mi14:19:583:24:098:308:21
8:21
-0:09
40K
24.85 mi14:27:083:31:198:307:10
8:23
+0:02
25.2M
25.20 mi14:30:203:34:318:313:12
9:17
+0:54
Finish
26.22 mi14:38:353:42:468:308:15
8:06
-1:11

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

8:06 /mi

Average Pace

8:30 /mi

Slowest Pace

10:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

8:15

4% of race

Time at Steady Pace

2:41:27

72% of race

Time at Slower Pace

53:04

24% of race

Average Pace: 8:30 /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 mi11:21:1325:248:1125:24
8:11
#17949
10K
6.21 mi11:46:4150:528:1125:28
8:12
#17885
15K
9.32 mi12:12:281:16:398:1325:47
8:18
#17917
20K
12.43 mi12:38:501:43:018:1726:22
8:29
#17936
Half
13.11 mi12:44:291:48:408:175:39
8:17
#17909
25K
15.53 mi13:05:012:09:128:1920:32
8:28
#17693
30K
18.64 mi13:32:332:36:448:2427:32
8:52
#17521
20M
20.00 mi13:44:522:49:038:2712:19
9:04
#17472
21M
21.00 mi13:54:532:59:048:3210:01
10:01
#17529
35K
21.75 mi14:00:583:05:098:316:05
8:08
#17356
23M
23.00 mi14:11:373:15:488:3110:39
8:30
#17099
24M
24.00 mi14:19:583:24:098:308:21
8:21
#16925
40K
24.85 mi14:27:083:31:198:307:10
8:23
#16751
25.2M
25.20 mi14:30:203:34:318:313:12
9:17
#16696
Finish
26.22 mi14:38:353:42:468:308:15
8:06
#16565
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi179496311631118049(Top 64%)6347(Top 52%)6347(Top 350%)
10K6.21 mi3.10 mi17885+646258+536258+5317877(Top 63%)6225(Top 51%)6225(Top 343%)
15K9.32 mi3.11 mi17917-326276-186276-1818049(Top 64%)6347(Top 52%)6347(Top 350%)
20K12.43 mi3.11 mi17936-196298-226298-2218151(Top 64%)6421(Top 53%)6421(Top 354%)
Half13.11 mi0.68 mi17909+276289+96289+917850(Top 63%)6229(Top 51%)6229(Top 344%)
25K15.53 mi2.42 mi17693+2166173+1166173+11616997(Top 60%)5853(Top 48%)5853(Top 323%)
30K18.64 mi3.11 mi17521+1726133+406133+4016963(Top 60%)6010(Top 49%)6010(Top 331%)
20M20.00 mi1.36 mi17472+496131+26131+217150(Top 60%)6221(Top 51%)6221(Top 343%)
21M21.00 mi1.00 mi17529-576188-576188-5718361(Top 65%)6979(Top 57%)6979(Top 385%)
35K21.75 mi0.75 mi17356+1736112+766112+7613215(Top 47%)4299(Top 35%)4299(Top 237%)
23M23.00 mi1.25 mi17099+2575996+1165996+11613380(Top 47%)4476(Top 37%)4476(Top 247%)
24M24.00 mi1.00 mi16925+1745912+845912+8413605(Top 48%)4628(Top 38%)4628(Top 255%)
40K24.85 mi0.85 mi16751+1745844+685844+6812746(Top 45%)4320(Top 35%)4320(Top 238%)
25.2M25.20 mi0.35 mi16696+555822+225822+2213446(Top 47%)4755(Top 39%)4755(Top 262%)
Finish26.22 mi1.02 mi16565+1315764+585764+5813598(Top 48%)4756(Top 39%)4756(Top 262%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21stories
+97ft-345ft

Overall

18049

Females

6347

F45-49

6347

5K→10K

3.1 - 6.2 mi

Top 63%
×5stories
+79ft-138ft

Overall

17877

Females

6225

F45-49

6225

10K→15K

6.2 - 9.3 mi

Top 64%
×3stories
+67ft-78ft

Overall

18049

Females

6347

F45-49

6347

15K→20K

9.3 - 12.4 mi

Top 64%
×5stories
+106ft-86ft

Overall

18151

Females

6421

F45-49

6421

20K→Half

12.4 - 13.1 mi

Top 63%
×2stories
+19ft-37ft

Overall

17850

Females

6229

F45-49

6229

Half→25K

13.1 - 15.5 mi

Top 60%
×4stories
+66ft-88ft

Overall

16997

Females

5853

F45-49

5853

25K→30K

15.5 - 18.6 mi

Top 60%
×9stories
+181ft-148ft

Overall

16963

Females

6010

F45-49

6010

30K→20M

18.6 - 20.0 mi

Top 60%
×5stories
+64ft-50ft

Overall

17150

Females

6221

F45-49

6221

20M→21M

20.0 - 21.0 mi

Top 65%
×8stories
+106ft-24ft

Overall

18361

Females

6979

F45-49

6979

21M→35K

21.0 - 21.8 mi

Top 47%
×7stories
+17ft-86ft

Overall

13215

Females

4299

F45-49

4299

35K→23M

21.8 - 23.0 mi

Top 47%
×5stories
+23ft-63ft

Overall

13380

Females

4476

F45-49

4476

23M→24M

23.0 - 24.0 mi

Top 48%
×6stories
+12ft-82ft

Overall

13605

Females

4628

F45-49

4628

24M→40K

24.0 - 24.9 mi

Top 45%
×1story
+6ft-20ft

Overall

12746

Females

4320

F45-49

4320

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

13446

Females

4755

F45-49

4755

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2stories
+22ft-21ft

Overall

13598

Females

4756

F45-49

4756

Passing Analysis

Category:
Athletes Passed
2551
Passed By
1167
Net Change
+1384
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17949
5K → 10K314250+64#17949#17885
10K → 15K180212-32#17885#17917
15K → 20K183202-19#17917#17936
20K → Half4720+27#17936#17909
Half → 25K27458+216#17909#17693
25K → 30K294122+172#17693#17521
30K → 20M13687+49#17521#17472
20M → 21M84141-57#17472#17529
21M → 35K1763+173#17529#17356
35K → 23M26912+257#17356#17099
23M → 24M18814+174#17099#16925
24M → 40K1817+174#16925#16751
40K → 25.2M6712+55#16751#16696
25.2M → Finish15827+131#16696#16565
TOTALS25511167+1384
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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