Boston Marathon logo
BOSTON MARATHON 2023

Colleen Gibson

Bib: 19325•F

MD

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 39%
Masters (Masters Women)
#0 / 6539
Top 26%
Division (F40-44)
#0 / 1878
Top 47%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ 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
7:53/mi
24:29
↑ 97↓ 3451.5%
10K· 6.21 mi
7:51/mi
48:51
↑ 79↓ 1380.4%
15K· 9.32 mi
8:01/mi
1:13:45
↑ 67↓ 78
20K· 12.43 mi
8:09/mi
1:39:05
↑ 106↓ 860.1%
Half· 13.11 mi
8:07/mi
1:44:37
↑ 19↓ 370.5%
25K· 15.53 mi
8:13/mi
2:04:32
↑ 66↓ 880.2%
30K· 18.64 mi
8:40/mi
2:31:27
↑ 181↓ 1480.2%
20M
8:45/mi
2:43:20
↑ 64↓ 500.2%
21M
9:23/mi
2:52:43
↑ 106↓ 241.6%
35K· 21.75 mi
8:24/mi
2:59:00
↑ 17↓ 861.7%
23M
8:46/mi
3:09:59
↑ 23↓ 630.6%
24M
8:26/mi
3:18:25
↓ 821.3%
40K· 24.85 mi
8:29/mi
3:25:40
↓ 200.3%
25.2M
9:08/mi
3:28:49
↑ 13↓ 160.2%
Finish· 26.22 mi
8:30/mi
3:37:29
↑ 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
Time1:44:37
Pace7:59 /mi
2nd Half
Distance13.11 mi
Time1:52:52
Pace8:37 /mi
📊Positive Split: 7.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:40:1924:297:5324:29
7:53
-
10K
6.21 mi12:04:4148:517:5224:22
7:51
-0:02
15K
9.32 mi12:29:351:13:457:5524:54
8:01
+0:10
20K
12.43 mi12:54:551:39:057:5825:20
8:09
+0:08
Half
13.11 mi13:00:271:44:377:595:32
8:07
-0:02
25K
15.53 mi13:20:222:04:328:0119:55
8:13
+0:06
30K
18.64 mi13:47:172:31:278:0726:55
8:40
+0:27
20M
20.00 mi13:59:102:43:208:1011:53
8:45
+0:05
21M
21.00 mi14:08:332:52:438:139:23
9:23
+0:38
35K
21.75 mi14:14:502:59:008:146:17
8:24
-0:59
23M
23.00 mi14:25:493:09:598:1610:59
8:46
+0:22
24M
24.00 mi14:34:153:18:258:168:26
8:26
-0:20
40K
24.85 mi14:41:303:25:408:167:15
8:29
+0:03
25.2M
25.20 mi14:44:393:28:498:173:09
9:08
+0:39
Finish
26.22 mi14:53:193:37:298:188:40
8:30
-0:38

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

7:51 /mi

Average Pace

8:18 /mi

Slowest Pace

9:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:35:10

71% of race

Time at Steady Pace

52:56

24% of race

Time at Slower Pace

9:23

4% of race

Average Pace: 8:18 /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 mi11:40:1924:297:5324:29
7:53
#13100
10K
6.21 mi12:04:4148:517:5224:22
7:51
#13294
15K
9.32 mi12:29:351:13:457:5524:54
8:01
#13685
20K
12.43 mi12:54:551:39:057:5825:20
8:09
#13890
Half
13.11 mi13:00:271:44:377:595:32
8:07
#13950
25K
15.53 mi13:20:222:04:328:0119:55
8:13
#13996
30K
18.64 mi13:47:172:31:278:0726:55
8:40
#14285
20M
20.00 mi13:59:102:43:208:1011:53
8:45
#14328
21M
21.00 mi14:08:332:52:438:139:23
9:23
#14379
35K
21.75 mi14:14:502:59:008:146:17
8:24
#14387
23M
23.00 mi14:25:493:09:598:1610:59
8:46
#14407
24M
24.00 mi14:34:153:18:258:168:26
8:26
#14374
40K
24.85 mi14:41:303:25:408:167:15
8:29
#14308
25.2M
25.20 mi14:44:393:28:498:173:09
9:08
#14277
Finish
26.22 mi14:53:193:37:298:188:40
8:30
#14311
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi131003503350314510(Top 55%)4391(Top 38%)4391(Top 234%)
10K6.21 mi3.10 mi13294-1943625-1223625-12213513(Top 51%)3737(Top 33%)3737(Top 199%)
15K9.32 mi3.11 mi13685-3913874-2493874-24914510(Top 55%)4391(Top 38%)4391(Top 234%)
20K12.43 mi3.11 mi13890-2054018-1444018-14414641(Top 55%)4492(Top 39%)4492(Top 239%)
Half13.11 mi0.68 mi13950-604057-394057-3915233(Top 57%)4818(Top 42%)4818(Top 257%)
25K15.53 mi2.42 mi13996-464107-504107-5014345(Top 54%)4416(Top 39%)4416(Top 235%)
30K18.64 mi3.11 mi14285-2894324-2174324-21715299(Top 57%)5114(Top 45%)5114(Top 272%)
20M20.00 mi1.36 mi14328-434380-564380-5615133(Top 57%)5072(Top 44%)5072(Top 270%)
21M21.00 mi1.00 mi14379-514422-424422-4215411(Top 58%)5288(Top 46%)5288(Top 282%)
35K21.75 mi0.75 mi14387-84436-144436-1414738(Top 55%)4952(Top 43%)4952(Top 264%)
23M23.00 mi1.25 mi14407-204478-424478-4214836(Top 56%)5079(Top 44%)5079(Top 270%)
24M24.00 mi1.00 mi14374+334476+24476+214100(Top 53%)4727(Top 41%)4727(Top 252%)
40K24.85 mi0.85 mi14308+664463+134463+1313237(Top 50%)4335(Top 38%)4335(Top 231%)
25.2M25.20 mi0.35 mi14277+314454+94454+913334(Top 50%)4405(Top 39%)4405(Top 235%)
Finish26.22 mi1.02 mi14311-344490-364490-3615460(Top 58%)5507(Top 48%)5507(Top 293%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21story building
+97ft-345ft

Overall

14510

Females

4391

F40-44

4391

5K→10K

3.1 - 6.2 mi

Top 51%
×5story building
+79ft-138ft

Overall

13513

Females

3737

F40-44

3737

10K→15K

6.2 - 9.3 mi

Top 55%
×3story building
+67ft-78ft

Overall

14510

Females

4391

F40-44

4391

15K→20K

9.3 - 12.4 mi

Top 55%
×5story building
+106ft-86ft

Overall

14641

Females

4492

F40-44

4492

20K→Half

12.4 - 13.1 mi

Top 57%
×2story building
+19ft-37ft

Overall

15233

Females

4818

F40-44

4818

Half→25K

13.1 - 15.5 mi

Top 54%
×4story building
+66ft-88ft

Overall

14345

Females

4416

F40-44

4416

25K→30K

15.5 - 18.6 mi

Top 57%
×9story building
+181ft-148ft

Overall

15299

Females

5114

F40-44

5114

30K→20M

18.6 - 20.0 mi

Top 57%
×5story building
+64ft-50ft

Overall

15133

Females

5072

F40-44

5072

20M→21M

20.0 - 21.0 mi

Top 58%
×8story building
+106ft-24ft

Overall

15411

Females

5288

F40-44

5288

21M→35K

21.0 - 21.8 mi

Top 55%
×7story building
+17ft-86ft

Overall

14738

Females

4952

F40-44

4952

35K→23M

21.8 - 23.0 mi

Top 56%
×5story building
+23ft-63ft

Overall

14836

Females

5079

F40-44

5079

23M→24M

23.0 - 24.0 mi

Top 53%
×6story building
+12ft-82ft

Overall

14100

Females

4727

F40-44

4727

24M→40K

24.0 - 24.9 mi

Top 50%
×1story
+6ft-20ft

Overall

13237

Females

4335

F40-44

4335

40K→25.2M

24.9 - 25.2 mi

Top 50%
×1story
+13ft-16ft

Overall

13334

Females

4405

F40-44

4405

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2story building
+22ft-21ft

Overall

15460

Females

5507

F40-44

5507

Passing Analysis

Category:
Athletes Passed
1178
Passed By
2389
Net Change
-1211
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13100
5K → 10K219413-194#13100#13294
10K → 15K78469-391#13294#13685
15K → 20K117322-205#13685#13890
20K → Half1474-60#13890#13950
Half → 25K108154-46#13950#13996
25K → 30K114403-289#13996#14285
30K → 20M67110-43#14285#14328
20M → 21M56107-51#14328#14379
21M → 35K4149-8#14379#14387
35K → 23M81101-20#14387#14407
23M → 24M8754+33#14407#14374
24M → 40K9428+66#14374#14308
40K → 25.2M4211+31#14308#14277
25.2M → Finish6094-34#14277#14311
TOTALS11782389-1211
📊

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